STScI Scientist Julien H Girard

All Stories

1. 
   Planet formation with all flavors of adaptive optics: VLT/MUSE’s laser tomography adaptive optics to directly image young accreting exoplanets

   Article • December 2020, SPIE

   STScI Scientist Julien H Girard

2. 
   The ExoGRAVITY project: using single mode interferometry to characterize exoplanets

   Article • December 2020, SPIE

   STScI Scientist Julien H Girard

3. 
   Searching for proto-planets with MUSE

   Article • Astronomy and Astrophysics, December 2020, EDP Sciences

   STScI Scientist Julien H Girard

4. 
   A Search for Polarized Thermal Emission from Directly Imaged Exoplanets and Brown Dwarf Companions to Nearby Stars

   Article • The Astronomical Journal, November 2020, American Astronomical Society

   STScI Scientist Julien H Girard

5. 
   Direct imaging of sub-Jupiter mass exoplanets with James Webb Space Telescope coronagraphy

   Article • Monthly Notices of the Royal Astronomical Society, November 2020, Oxford University Press (OUP)

   STScI Scientist Julien H Girard

6. 
   Direct confirmation of the radial-velocity planet β Pictoris c

   Article • Astronomy and Astrophysics, October 2020, EDP Sciences

   STScI Scientist Julien H Girard

7. 
   Unveiling the β Pictoris system, coupling high contrast imaging, interferometric, and radial velocity data

   Article • Astronomy and Astrophysics, October 2020, EDP Sciences

   STScI Scientist Julien H Girard

8. 
   CS Cha B: A disc-obscured M-type star mimicking a polarised planetary companion

   Article • Astronomy and Astrophysics, August 2020, EDP Sciences

   STScI Scientist Julien H Girard

9. 
   Retrieving scattering clouds and disequilibrium chemistry in the atmosphere of HR 8799e

   Article • Astronomy and Astrophysics, August 2020, EDP Sciences

   STScI Scientist Julien H Girard

10. 
    Dynamical Evidence of a Spiral Arm–driving Planet in the MWC 758 Protoplanetary Disk

    Article • The Astrophysical Journal Letters, July 2020, American Astronomical Society

    STScI Scientist Julien H Girard

11. 
    VLT/SPHERE survey for exoplanets around young early-type stars, including systems with multi-belt architectures

    Article • Astronomy and Astrophysics, July 2020, EDP Sciences

    STScI Scientist Julien H Girard

12. 
    Detection of Polarization due to Cloud Bands in the Nearby Luhman 16 Brown Dwarf Binary

    Article • The Astrophysical Journal, May 2020, American Astronomical Society

    STScI Scientist Julien H Girard

13. 
    ISPY-NACO Imaging Survey for Planets around Young stars

    Article • Astronomy and Astrophysics, March 2020, EDP Sciences

    STScI Scientist Julien H Girard

14. 
    RefPlanets: Search for reflected light from extrasolar planets with SPHERE/ZIMPOL

    Article • Astronomy and Astrophysics, February 2020, EDP Sciences

    STScI Scientist Julien H Girard

15. 
    Polarimetric imaging mode of VLT/SPHERE/IRDIS

    Article • Astronomy and Astrophysics, January 2020, EDP Sciences

    STScI Scientist Julien H Girard

16. 
    Polarimetric imaging mode of VLT/SPHERE/IRDIS

    Article • Astronomy and Astrophysics, January 2020, EDP Sciences

    STScI Scientist Julien H Girard

17. 
    Early formation and recent starburst activity in the nuclear disk of the Milky Way

    Article • Nature Astronomy, December 2019, Springer Science + Business Media

    STScI Scientist Julien H Girard

18. 
    NaCo polarimetric observations of Sz 91 transitional disc: a remarkable case of dust filtering

    Article • Monthly Notices of the Royal Astronomical Society, December 2019, Oxford University Press (OUP)

    STScI Scientist Julien H Girard

19. 
    SPHERE: the exoplanet imager for the Very Large Telescope

    Article • Astronomy and Astrophysics, November 2019, EDP Sciences

    STScI Scientist Julien H Girard

20. 
    GALACTICNUCLEUS: A high-angular-resolution JHKs imaging survey of the Galactic centre

    Article • Astronomy and Astrophysics, October 2019, EDP Sciences

    STScI Scientist Julien H Girard

21. 
    Constraining the properties of HD 206893 B

    Article • Astronomy and Astrophysics, August 2019, EDP Sciences

    STScI Scientist Julien H Girard

22. 
    The inner dust shell of Betelgeuse detected by polarimetric aperture-masking interferometry

    Article • Astronomy and Astrophysics, August 2019, EDP Sciences

    STScI Scientist Julien H Girard

23. 
    ISPY – NaCo Imaging Survey for Planets around Young stars

    Article • Astronomy and Astrophysics, July 2019, EDP Sciences

    STScI Scientist Julien H Girard

24. 
    Constraining the properties of HD 206893 B

    Article • Astronomy and Astrophysics, July 2019, EDP Sciences

    STScI Scientist Julien H Girard

25. 
    Two accreting protoplanets around the young star PDS 70

    Article • Nature Astronomy, June 2019, Springer Science + Business Media

    STScI Scientist Julien H Girard

26. 
    Evidence for a Circumplanetary Disk around Protoplanet PDS 70 b

    Article • The Astrophysical Journal Letters, June 2019, American Astronomical Society

    STScI Scientist Julien H Girard

27. 
    Separating extended disc features from the protoplanet in PDS 70 using VLT/SINFONI

    Article • Monthly Notices of the Royal Astronomical Society, May 2019, Oxford University Press (OUP)

    STScI Scientist Julien H Girard

28. 
    Kernel phase imaging with VLT/NACO: high-contrast detection of new candidate low-mass stellar companions at the diffraction limit

    Article • Monthly Notices of the Royal Astronomical Society, March 2019, Oxford University Press (OUP)

    STScI Scientist Julien H Girard

29. 
    SPHERE dynamical and spectroscopic characterization of HD 142527B

    Article • Astronomy and Astrophysics, February 2019, EDP Sciences

    STScI Scientist Julien H Girard

30. 
    A search for accreting young companions embedded in circumstellar disks

    Article • Astronomy and Astrophysics, February 2019, EDP Sciences

    STScI Scientist Julien H Girard

31. 
    Spectral and orbital characterisation of the directly imaged giant planet HIP 65426 b

    Article • Astronomy and Astrophysics, January 2019, EDP Sciences

    STScI Scientist Julien H Girard

32. 
    Post-conjunction detection of β Pictoris b with VLT/SPHERE

    Article • Astronomy and Astrophysics, January 2019, EDP Sciences

    STScI Scientist Julien H Girard

33. 
    Star formation history and metallicity in the Galactic inner bulge revealed by the red giant branch bump

    Article • Astronomy and Astrophysics, December 2018, EDP Sciences

    STScI Scientist Julien H Girard

34. 
    Dynamical masses of M-dwarf binaries in young moving groups

    Article • Astronomy and Astrophysics, November 2018, EDP Sciences

    STScI Scientist Julien H Girard

35. 
    Mapping of shadows cast on a protoplanetary disk by a close binary system

    Article • Nature Astronomy, November 2018, Springer Science + Business Media

    STScI Scientist Julien H Girard

36. 
    SPHERE/ZIMPOL high resolution polarimetric imager

    Article • Astronomy and Astrophysics, November 2018, EDP Sciences

    STScI Scientist Julien H Girard

37. 
    Dynamical masses of M-dwarf binaries in young moving groups

    Article • Astronomy and Astrophysics, October 2018, EDP Sciences

    STScI Scientist Julien H Girard

38. 
    Discovery of a planetary-mass companion within the gap of the transition disk around PDS 70

    Article • Astronomy and Astrophysics, September 2018, EDP Sciences

    STScI Scientist Julien H Girard

39. 
    Orbital and atmospheric characterization of the planet within the gap of the PDS 70 transition disk

    Article • Astronomy and Astrophysics, September 2018, EDP Sciences

    STScI Scientist Julien H Girard

40. 
    Characterization of low-mass companion HD 142527 B

    Article • Astronomy and Astrophysics, September 2018, EDP Sciences

    STScI Scientist Julien H Girard

41. 
    Medium-resolution integral-field spectroscopy for high-contrast exoplanet imaging

    Article • Astronomy and Astrophysics, September 2018, EDP Sciences

    STScI Scientist Julien H Girard

42. 
    Making good use of JWST's coronagraphs: tools and strategies from a user's perspective

    Article • August 2018, SPIE

    STScI Scientist Julien H Girard

43. 
    Lessons for WFIRST CGI from ground-based high-contrast systems

    Article • August 2018, SPIE

    STScI Scientist Julien H Girard

44. 
    Updated optical modeling of JWST coronagraph performance contrast, stability, and strategies

    Article • August 2018, SPIE

    STScI Scientist Julien H Girard

45. 
    Low wind effect on VLT/SPHERE: impact, mitigation strategy, and results

    Article • July 2018, SPIE

    STScI Scientist Julien H Girard

46. 
    The gravitational mass of Proxima Centauri measured with SPHERE from a microlensing event

    Article • Monthly Notices of the Royal Astronomical Society, July 2018, Oxford University Press (OUP)

    STScI Scientist Julien H Girard

47. 
    Physical, spectral, and dynamical properties of asteroid (107) Camilla and its satellites

    Article • Icarus, July 2018, Elsevier

    STScI Scientist Julien H Girard

48. 
    SAFARI – I. A SPHERE discovery of a super metal-rich M-dwarf companion to the star HD 86006

    Article • Monthly Notices of the Royal Astronomical Society, June 2018, Oxford University Press (OUP)

    STScI Scientist Julien H Girard

49. 
    First scattered light detection of a nearly edge-on transition disk around the T Tauri star RY Lupi

    Article • Astronomy and Astrophysics, June 2018, EDP Sciences

    STScI Scientist Julien H Girard

50. 
    Observations of fast-moving features in the debris disk of AU Mic on a three-year timescale: Confirmation and new discoveries

    Article • Astronomy and Astrophysics, June 2018, EDP Sciences

    STScI Scientist Julien H Girard

51. 
    Dynamical models to explain observations with SPHERE in planetary systems with double debris belts

    Article • Astronomy and Astrophysics, March 2018, EDP Sciences

    STScI Scientist Julien H Girard

52. 
    GALACTICNUCLEUS: A high angular resolution JHKs imaging survey of the Galactic centre

    Article • Astronomy and Astrophysics, February 2018, EDP Sciences

    STScI Scientist Julien H Girard

53. 
    In-depth study of moderately young but extremely red, very dusty substellar companion HD 206893B

    Article • Astronomy and Astrophysics, December 2017, EDP Sciences

    STScI Scientist Julien H Girard

54. 
    Investigation of the inner structures around HD 169142 with VLT/SPHERE

    Article • Monthly Notices of the Royal Astronomical Society, November 2017, Oxford University Press (OUP)

    STScI Scientist Julien H Girard

55. 
    The HIP 79977 debris disk in polarized light

    Article • Astronomy and Astrophysics, November 2017, EDP Sciences

    STScI Scientist Julien H Girard

56. 
    Combining angular differential imaging and accurate polarimetry with SPHERE/IRDIS to characterize young giant exoplanets

    Article • September 2017, SPIE

    STScI Scientist Julien H Girard

57. 
    Discovery of a warm, dusty giant planet around HIP 65426

    Article • Astronomy and Astrophysics, September 2017, EDP Sciences

    STScI Scientist Julien H Girard

58. 
    Exploring Dust around HD 142527 down to 0.″025 (4 au) Using SPHERE/ZIMPOL

    Article • The Astronomical Journal, June 2017, American Astronomical Society

    STScI Scientist Julien H Girard

59. 
    A Resolved and Asymmetric Ring of PAHs within the Young Circumstellar Disk of IRS 48

    Article • The Astrophysical Journal, June 2017, American Astronomical Society

    STScI Scientist Julien H Girard

60. 
    SPHERE/ZIMPOL observations of the symbiotic system R Aquarii

    Article • Astronomy and Astrophysics, June 2017, EDP Sciences

    STScI Scientist Julien H Girard

61. 
    A search for passive protoplanetary discs in the Taurus–Auriga star-forming region

    Article • Monthly Notices of the Royal Astronomical Society, May 2017, Oxford University Press (OUP)

    STScI Scientist Julien H Girard

62. 
    The VLT/NaCo large program to probe the occurrence of exoplanets and brown dwarfs at wide orbits. IV. Gravitational instability rarely forms wide, giant planets

    Article • Astronomy and Astrophysics, March 2017, EDP Sciences

    STScI Scientist Julien H Girard

63. 
    Three Radial Gaps in the Disk of TW Hydrae Imaged with SPHERE

    Article • The Astrophysical Journal, March 2017, American Astronomical Society

    STScI Scientist Julien H Girard

64. 
    Near-infrared scattered light properties of the HR 4796 A dust ring

    Article • Astronomy and Astrophysics, March 2017, EDP Sciences

    STScI Scientist Julien H Girard

65. 
    VLT/SPHERE robust astrometry of the HR8799 planets at milliarcsecond-level accuracy

    Article • Astronomy and Astrophysics, February 2017, EDP Sciences

    STScI Scientist Julien H Girard

66. 
    First Scattered-light Images of the Gas-rich Debris Disk around 49 Ceti

    Article • The Astrophysical Journal Letters, January 2017, American Astronomical Society

    STScI Scientist Julien H Girard

67. 
    Upper limits for mass and radius of objects around Proxima Cen from SPHERE/VLT

    Article • Monthly Notices of the Royal Astronomical Society Letters, January 2017, Oxford University Press (OUP)

    STScI Scientist Julien H Girard

68. 
    Discovery of a low-mass companion inside the debris ring surrounding the F5V star HD 206893

    Article • Astronomy and Astrophysics, December 2016, EDP Sciences

    STScI Scientist Julien H Girard

69. 
    MASSIVE: A Bayesian analysis of giant planet populations around low-mass stars

    Article • Astronomy and Astrophysics, December 2016, EDP Sciences

    STScI Scientist Julien H Girard

70. 
    The SHARDDS survey: First resolved image of the HD114082 debris disk in the Lower Centaurus Crux with SPHERE

    Article • Astronomy and Astrophysics, November 2016, EDP Sciences

    STScI Scientist Julien H Girard

71. 
    Direct detection of scattered light gaps in the transitional disk around HD 97048 with VLT/SPHERE

    Article • Astronomy and Astrophysics, November 2016, EDP Sciences

    STScI Scientist Julien H Girard

72. 
    Multiple rings in the transition disk and companion candidates around RX J1615.3-3255

    Article • Astronomy and Astrophysics, November 2016, EDP Sciences

    STScI Scientist Julien H Girard

73. 
    The origin of the dusty envelope around Betelgeuse

    Article • Proceedings of the International Astronomical Union, November 2016, Cambridge University Press

    STScI Scientist Julien H Girard

74. 
    BP Piscium: its flaring disc imaged with SPHERE/ZIMPOL

    Article • Monthly Notices of the Royal Astronomical Society Letters, October 2016, Oxford University Press (OUP)

    STScI Scientist Julien H Girard

75. 
    Sparse aperture masking at the VLT

    Article • Astronomy and Astrophysics, October 2016, EDP Sciences

    STScI Scientist Julien H Girard

76. 
    ABISM: an interactive image quality and Strehl ratio measurement tool for adaptive optics instruments

    Article • September 2016, SPIE

    STScI Scientist Julien H Girard

77. 
    Interferometric direct imaging properties of a BIGRE-DAM device in laboratory

    Article • August 2016, SPIE

    STScI Scientist Julien H Girard

78. 
    Pushing down with the contrast: scientific performances with SPHERE-IFS

    Article • August 2016, SPIE

    STScI Scientist Julien H Girard

79. 
    SPHERE IRDIS and IFS astrometric strategy and calibration

    Article • August 2016, SPIE

    STScI Scientist Julien H Girard

80. 
    Three years of harvest with the vector vortex coronagraph in the thermal infrared

    Article • August 2016, SPIE

    Dr Bruno Femenia Castella, STScI Scientist Julien H Girard

81. 
    SPHERE on-sky performance compared with budget predictions

    Article • August 2016, SPIE

    STScI Scientist Julien H Girard

82. 
    Sparse aperture masking with SPHERE

    Article • August 2016, SPIE

    STScI Scientist Julien H Girard

83. 
    Calibration of quasi-static aberrations in exoplanet direct-imaging instruments with a Zernike phase-mask sensor

    Article • Astronomy and Astrophysics, August 2016, EDP Sciences

    STScI Scientist Julien H Girard

84. 
    Speckle lifetime in XAO coronagraphic images: temporal evolution of SPHERE coronagraphic images

    Article • July 2016, SPIE

    STScI Scientist Julien H Girard

85. 
    ZELDA, a Zernike wavefront sensor for the fine measurement of quasi-static aberrations in coronagraphic systems: concept studies and results with VLT/SPHERE

    Article • July 2016, SPIE

    STScI Scientist Julien H Girard

86. 
    Tackling down the low wind effect on SPHERE instrument

    Article • July 2016, SPIE

    STScI Scientist Julien H Girard

87. 
    SAXO, the SPHERE extreme AO system: on-sky final performance and future improvements

    Article • July 2016, SPIE

    STScI Scientist Julien H Girard

88. 
    Quality control and data flow operations of SPHERE

    Article • July 2016, SPIE

    STScI Scientist Julien H Girard

89. 
    Training telescope operators and support astronomers at Paranal

    Article • July 2016, SPIE

    STScI Scientist Julien H Girard

90. 
    Discovery of concentric broken rings at sub-arcsec separations in the HD 141569A gas-rich, debris disk with VLT/SPHERE

    Article • Astronomy and Astrophysics, May 2016, EDP Sciences

    STScI Scientist Julien H Girard

91. 
    SAXO: the extreme adaptive optics system of SPHERE (I) system overview and global laboratory performance

    Article • Journal of Astronomical Telescopes Instruments and Systems, May 2016, SPIE

    STScI Scientist Julien H Girard

92. 
    An M-dwarf star in the transition disk of Herbig HD 142527

    Article • Astronomy and Astrophysics, May 2016, EDP Sciences

    STScI Scientist Julien H Girard

93. 
    Luminous blue variables: An imaging perspective on their binarity and near environment

    Article • Astronomy and Astrophysics, February 2016, EDP Sciences

    STScI Scientist Julien H Girard

94. 
    First light of the VLT planet finder SPHERE

    Article • Astronomy and Astrophysics, February 2016, EDP Sciences

    STScI Scientist Julien H Girard

95. 
    First light of the VLT planet finder SPHERE

    Article • Astronomy and Astrophysics, February 2016, EDP Sciences

    STScI Scientist Julien H Girard

96. 
    First light of the VLT planet finder SPHERE

    Article • Astronomy and Astrophysics, February 2016, EDP Sciences

    STScI Scientist Julien H Girard

97. 
    First light of the VLT planet finder SPHERE

    Article • Astronomy and Astrophysics, February 2016, EDP Sciences

    STScI Scientist Julien H Girard

98. 
    A narrow, edge-on disk resolved around HD 106906 with SPHERE

    Article • Astronomy and Astrophysics, February 2016, EDP Sciences

    STScI Scientist Julien H Girard

99. 
    The VLT/NaCo large program to probe the occurrence of exoplanets and brown dwarfs at wide orbits

    Article • Astronomy and Astrophysics, February 2016, EDP Sciences

    STScI Scientist Julien H Girard

100. 
     Adaptive Optics in High-Contrast Imaging

     Article • January 2016, Springer Science + Business Media

     STScI Scientist Julien H Girard

101. 
     Variability and dust filtration in the transition disk J160421.7-213028 observed in optical scattered light

     Article • Astronomy and Astrophysics, November 2015, EDP Sciences

     STScI Scientist Julien H Girard

102. 
     Fast-moving features in the debris disk around AU Microscopii

     Article • Nature, October 2015, Springer Science + Business Media

     STScI Scientist Julien H Girard

103. 
     PLUTO’s ATMOSPHERE FROM STELLAR OCCULTATIONS IN 2012 AND 2013

     Article • The Astrophysical Journal, September 2015, American Astronomical Society

     STScI Scientist Julien H Girard

104. 
     CONFIRMATION AND CHARACTERIZATION OF THE PROTOPLANET HD 100546 b—DIRECT EVIDENCE FOR GAS GIANT PLANET FORMATION AT 50 AU

     Article • The Astrophysical Journal, July 2015, American Astronomical Society

     STScI Scientist Julien H Girard

105. 
     The dust disk and companion of the nearby AGB star L2 Puppis

     Article • Astronomy and Astrophysics, June 2015, EDP Sciences

     STScI Scientist Julien H Girard

106. 
     The inner environment of Z Canis Majoris: High-contrast imaging polarimetry with NaCo

     Article • Astronomy and Astrophysics, May 2015, EDP Sciences

     STScI Scientist Julien H Girard

107. 
     WISE J061213.85-303612.5: a new T-dwarf binary candidate

     Article • Astronomy and Astrophysics, May 2015, EDP Sciences

     STScI Scientist Julien H Girard

108. 
     New constraints on the dust surrounding HR 4796A

     Article • Astronomy and Astrophysics, May 2015, EDP Sciences

     STScI Scientist Julien H Girard

109. 
     The VLT/NaCo large program to probe the occurrence of exoplanets and brown dwarfs at wide orbits

     Article • Astronomy and Astrophysics, January 2015, EDP Sciences

     STScI Scientist Julien H Girard

110. 
     DEEP THERMAL INFRARED IMAGING OF HR 8799 bcde: NEW ATMOSPHERIC CONSTRAINTS AND LIMITS ON A FIFTH PLANET

     Article • The Astrophysical Journal, October 2014, American Astronomical Society

     STScI Scientist Julien H Girard

111. 
     Discretized aperture mapping with a micro-lenses array for interferometric direct imaging

     Article • August 2014, SPIE

     STScI Scientist Julien H Girard

112. 
     DISCOVERY OF A COMPANION CANDIDATE IN THE HD 169142 TRANSITION DISK AND THE POSSIBILITY OF MULTIPLE PLANET FORMATION

     Article • The Astrophysical Journal Letters, August 2014, American Astronomical Society

     STScI Scientist Julien H Girard

113. 
     Atmospheric parameter estimation from AO wavefront sensing data: application of the FADE method with NACO

     Article • August 2014, SPIE

     STScI Scientist Julien H Girard

114. 
     Final performance and lesson-learned of SAXO, the VLT-SPHERE extreme AO: from early design to on-sky results

     Article • August 2014, SPIE

     STScI Scientist Julien H Girard

115. 
     Real-time Strehl and image quality performance estimator at Paranal Observatory

     Article • August 2014, SPIE

     STScI Scientist Julien H Girard

116. 
     Characterizing instrumental effects on polarization at a Nasmyth focus using NaCo

     Article • July 2014, SPIE

     STScI Scientist Julien H Girard

117. 
     Searching for visual companions of close Cepheids

     Article • Astronomy and Astrophysics, July 2014, EDP Sciences

     STScI Scientist Julien H Girard

118. 
     Very deep images of the innermost regions of theβPictoris debris disc atL′

     Article • Astronomy and Astrophysics, June 2014, EDP Sciences

     STScI Scientist Julien H Girard

119. 
     Ground-based transit observations of the super-Earth GJ 1214 b

     Article • Astronomy and Astrophysics, April 2014, EDP Sciences

     STScI Scientist Julien H Girard

120. 
     CHARACTERIZATION OF THE BENCHMARK BINARY NLTT 33370,

     Article • The Astrophysical Journal, February 2014, American Astronomical Society

     STScI Scientist Julien H Girard

121. 
     Possible astrometric discovery of a substellar companion to the closest binary brown dwarf system WISE J104915.57–531906.1

     Article • Astronomy and Astrophysics, December 2013, EDP Sciences

     STScI Scientist Julien H Girard

122. 
     CONFIRMATION OF THE PLANET AROUND HD 95086 BY DIRECT IMAGING

     Article • The Astrophysical Journal Letters, December 2013, American Astronomical Society

     STScI Scientist Julien H Girard

123. 
     Searching for companions down to 2 AU fromβPictoris using theL′-band AGPM coronagraph on VLT/NACO

     Article • Astronomy and Astrophysics, November 2013, EDP Sciences

     STScI Scientist Julien H Girard

124. 
     ERRATUM: “DISCOVERY OF A PROBABLE 4-5 JUPITER-MASS EXOPLANET TO HD 95086 BY DIRECT-IMAGING” (2013, ApJL, 772, L15)

     Article • The Astrophysical Journal Letters, September 2013, American Astronomical Society

     STScI Scientist Julien H Girard

125. 
     Small-angle, high-contrast exoplanet imaging with the L-band AGPM vector vortex coronagraph now offered at the VLT

     Article • September 2013, SPIE

     STScI Scientist Julien H Girard

126. 
     Adaptive phase-mask coronagraph with amplitude and phase modulation for high dynamic range synchronous detection: APM2coronagraph

     Article • September 2013, SPIE

     STScI Scientist Julien H Girard

127. 
     A COMBINED VERY LARGE TELESCOPE AND GEMINI STUDY OF THE ATMOSPHERE OF THE DIRECTLY IMAGED PLANET, β PICTORIS b

     Article • The Astrophysical Journal, September 2013, American Astronomical Society

     STScI Scientist Julien H Girard

128. 
     A MULTIPLICITY CENSUS OF INTERMEDIATE-MASS STARS IN SCORPIUS-CENTAURUS

     Article • The Astrophysical Journal, August 2013, American Astronomical Society

     STScI Scientist Julien H Girard

129. 
     Prospects of detecting the polarimetric signature of the Earth-mass planetαCentauri B b with SPHERE/ZIMPOL

     Article • Astronomy and Astrophysics, July 2013, EDP Sciences

     STScI Scientist Julien H Girard

130. 
     DISCOVERY OF A PROBABLE 4-5 JUPITER-MASS EXOPLANET TO HD 95086 BY DIRECT IMAGING

     Article • The Astrophysical Journal Letters, July 2013, American Astronomical Society

     STScI Scientist Julien H Girard

131. 
     The near-infrared spectral energy distribution ofβPictoris b

     Article • Astronomy and Astrophysics, July 2013, EDP Sciences

     STScI Scientist Julien H Girard

132. 
     CHARACTERIZATION OF THE NEARBY L/T BINARY BROWN DWARF WISE J104915.57–531906.1 AT 2 pc FROM THE SUN

     Article • The Astrophysical Journal, June 2013, American Astronomical Society

     STScI Scientist Julien H Girard

133. 
     Companion search around β Pictoris with the newly commissioned L'-band vector vortex coronagraph on VLT/NACO

     Article • Proceedings of the International Astronomical Union, June 2013, Cambridge University Press

     STScI Scientist Julien H Girard

134. 
     First High-Angular Resolution L′ Images of the β Pictoris Debris Disc with the VLT / NaCo

     Article • Proceedings of the International Astronomical Union, June 2013, Cambridge University Press

     STScI Scientist Julien H Girard

135. 
     Properties of the young gas giant planet β Pictoris b

     Article • Proceedings of the International Astronomical Union, June 2013, Cambridge University Press

     STScI Scientist Julien H Girard

136. 
     Successes and challenges of the APP Coronagraph

     Article • Proceedings of the International Astronomical Union, June 2013, Cambridge University Press

     STScI Scientist Julien H Girard

137. 
     β Pictoris b Orbital Properties

     Article • Proceedings of the International Astronomical Union, June 2013, Cambridge University Press

     STScI Scientist Julien H Girard

138. 
     A survey of young, nearby, and dusty stars conducted to understand the formation of wide-orbit giant planets

     Article • Astronomy and Astrophysics, May 2013, EDP Sciences

     STScI Scientist Julien H Girard

139. 
     Direct-imaging discovery of a 12–14 Jupiter-mass object orbiting a young binary system of very low-mass stars

     Article • Astronomy and Astrophysics, May 2013, EDP Sciences

     STScI Scientist Julien H Girard

140. 
     L’-band AGPM vector vortex coronagraph’s first light on VLT/NACO

     Article • Astronomy and Astrophysics, April 2013, EDP Sciences

     STScI Scientist Julien H Girard

141. 
     A YOUNG PROTOPLANET CANDIDATE EMBEDDED IN THE CIRCUMSTELLAR DISK OF HD 100546

     Article • The Astrophysical Journal Letters, February 2013, American Astronomical Society

     STScI Scientist Julien H Girard

142. 
     CORONAGRAPHIC OBSERVATIONS OF FOMALHAUT AT SOLAR SYSTEM SCALES

     Article • The Astrophysical Journal, January 2013, American Astronomical Society

     STScI Scientist Julien H Girard

143. 
     Flows of gas through a protoplanetary gap

     Article • Nature, January 2013, Springer Science + Business Media

     STScI Scientist Julien H Girard

144. 
     Holographic imaging of crowded fields: high angular resolution imaging with excellent quality at very low cost

     Article • Monthly Notices of the Royal Astronomical Society, December 2012, Oxford University Press (OUP)

     STScI Scientist Julien H Girard

145. 
     High-contrast imaging of the close environment of HD 142527

     Article • Astronomy and Astrophysics, September 2012, EDP Sciences

     STScI Scientist Julien H Girard

146. 
     Conceptual study for a sub-pupil instrument having 4 high order adaptive optics path for parallel multi-wavelength high contrast imaging, and medium resolution spectrometry

     Article • September 2012, SPIE

     STScI Scientist Julien H Girard

147. 
     NEW BROWN DWARF COMPANIONS TO YOUNG STARS IN SCORPIUS-CENTAURUS

     Article • The Astrophysical Journal Letters, September 2012, American Astronomical Society

     STScI Scientist Julien H Girard

148. 
     Extinction controlled adaptive mask coronagraph Lyot and phase mask dual concept for wide extinction area

     Article • September 2012, SPIE

     STScI Scientist Julien H Girard

149. 
     Image quality and high contrast improvements on VLT/NACO

     Article • September 2012, SPIE

     STScI Scientist Julien H Girard

150. 
     What can be retrieved from adaptive optics real-time data?

     Article • September 2012, SPIE

     STScI Scientist Julien H Girard

151. 
     Speckle imaging observations of 2005 YU55 with the NACO-VLT no-AO mode

     Article • September 2012, SPIE

     STScI Scientist Julien H Girard

152. 
     Review of small-angle coronagraphic techniques in the wake of ground-based second-generation adaptive optics systems

     Article • August 2012, SPIE

     STScI Scientist Julien H Girard

153. 
     Direct imaging of extra-solar planets in star forming regions

     Article • Astronomy and Astrophysics, August 2012, EDP Sciences

     STScI Scientist Julien H Girard

154. 
     Orbital characterization of theβPictoris b giant planet

     Article • Astronomy and Astrophysics, June 2012, EDP Sciences

     STScI Scientist Julien H Girard

155. 
     The position ofβPictoris b position relative to the debris disk

     Article • Astronomy and Astrophysics, June 2012, EDP Sciences

     STScI Scientist Julien H Girard

156. 
     Direct imaging with a dense aperture masking in comparison with a telescope or a hypertelelescope

     Article • September 2011, SPIE

     STScI Scientist Julien H Girard

157. 
     The hypertelescope at work with a BIGRE integral field unit

     Article • September 2011, SPIE

     STScI Scientist Julien H Girard

158. 
     On Our Multi-Wavelength Campaign of the 2011 Outburst of T Pyx

     Article • Proceedings of the International Astronomical Union, September 2011, Cambridge University Press

     STScI Scientist Julien H Girard

159. 
     SEARCHING FOR GAS GIANT PLANETS ON SOLAR SYSTEM SCALES: VLT NACO/APP OBSERVATIONS OF THE DEBRIS DISK HOST STARS HD172555 AND HD115892

     Article • The Astrophysical Journal Letters, July 2011, American Astronomical Society

     STScI Scientist Julien H Girard

160. 
     High angular resolution detection ofβ Pictoris b at 2.18 μm

     Article • Astronomy and Astrophysics, March 2011, EDP Sciences

     STScI Scientist Julien H Girard

161. 
     Spatially extended emission around the Cepheid RS Puppis in near-infrared hydrogen lines

     Article • Astronomy and Astrophysics, January 2011, EDP Sciences

     STScI Scientist Julien H Girard

162. 
     Adaptive optics observations of the T10 ultracool dwarf UGPS J072227.51-054031.2

     Article • Astronomy and Astrophysics, December 2010, EDP Sciences

     STScI Scientist Julien H Girard

163. 
     FIRST RESULTS FROM VERY LARGE TELESCOPE NACO APODIZING PHASE PLATE: 4 μm IMAGES OF THE EXOPLANET β PICTORIS b

     Article • The Astrophysical Journal Letters, September 2010, American Astronomical Society

     STScI Scientist Julien H Girard

164. 
     An apodizing phase plate coronagraph for VLT/NACO

     Article • July 2010, SPIE

     STScI Scientist Julien H Girard

165. 
     Evaluation of performance of the MACAO systems at the VLTI

     Article • July 2010, SPIE

     STScI Scientist Julien H Girard

166. 
     Speckle imaging with the SOAR and the very large telescopes

     Article • July 2010, SPIE

     STScI Scientist Julien H Girard

167. 
     Status and new operation modes of the versatile VLT/NaCo

     Article • July 2010, SPIE

     STScI Scientist Julien H Girard

168. 
     High-angular resolution observations of the Pistol star

     Article • Proceedings of the International Astronomical Union, July 2010, Cambridge University Press

     STScI Scientist Julien H Girard

169. 
     GUIELOA, the Mexican adaptive optics system: expected performance and operation

     Article • July 2008, SPIE

     STScI Scientist Julien H Girard

170. 
     Follow-up observations of binary ultra-cool dwarfs

     Article • Astronomy and Astrophysics, February 2008, EDP Sciences

     STScI Scientist Julien H Girard

171. 
     The Polychromatic Laser Guide Star for tilt measurement: progress report of the demonstrator at Observatoire de Haute Provence

     Article • September 2007, SPIE

     STScI Scientist Julien H Girard

172. 
     Techniques for measuring atmospheric aerosols at the high resolution fly’s eye experiment

     Article • Astroparticle Physics, February 2006, Elsevier

     STScI Scientist Julien H Girard

173. 
     Monocular measurement of the spectrum of UHE cosmic rays by the FADC detector of the HiRes experiment

     Article • Astroparticle Physics, March 2005, Elsevier

     STScI Scientist Julien H Girard

174. 
     Measurement of the Flux of Ultrahigh Energy Cosmic Rays from Monocular Observations by the High Resolution Fly’s Eye Experiment

     Article • Physical Review Letters, April 2004, American Physical Society (APS)

     STScI Scientist Julien H Girard

175. 
     Feasibility study of the polychromatic laser guide star

     Article • February 2003, SPIE

     STScI Scientist Julien H Girard

176. 
     A fiber-optic-based calibration system for the High Resolution Fly's Eye cosmic ray observatory

     Article • Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment, March 2001, Elsevier

     STScI Scientist Julien H Girard