INFRARED TRANSMISSION SPECTROSCOPY OF THE EXOPLANETS HD 209458b AND XO-1b USING THE WIDE FIELD CAMERA-3 ON THE HUBBLE SPACE TELESCOPE
Drake Deming,Drake Deming,A. Wilkins,Peter R. McCullough,Adam Burrows,Jonathan J. Fortney,Eric Agol,Eric Agol,Ian Dobbs-Dixon,Ian Dobbs-Dixon,Nikku Madhusudhan,Nicolas Crouzet,Jean-Michel Desert,Ronald L. Gilliland,Korey Haynes,Korey Haynes,Heather Knutson,Michael R. Line,Zazralt Magic,Avi Mandell,Sukrit Ranjan,David Charbonneau,Mark Clampin,Sara Seager,Adam P. Showman +24 more
TLDR
In this paper, the authors reported WFC3 spectroscopy of the giant planets HD 209458b and XO-1b in transit, using spatial scanning mode for maximum photon-collecting efficiency.Abstract:
Exoplanetary transmission spectroscopy in the near-infrared using the Hubble Space Telescope (HST) NICMOS is currently ambiguous because different observational groups claim different results from the same data, depending on their analysis methodologies. Spatial scanning with HST/WFC3 provides an opportunity to resolve this ambiguity. We here report WFC3 spectroscopy of the giant planets HD 209458b and XO-1b in transit, using spatial scanning mode for maximum photon-collecting efficiency. We introduce an analysis technique that derives the exoplanetary transmission spectrum without the necessity of explicitly decorrelating instrumental effects, and achieves nearly photon-limited precision even at the high flux levels collected in spatial scan mode. Our errors are within 6% (XO-1) and 26% (HD 209458b) of the photon-limit at a resolving power of λ/δλ ~ 70, and are better than 0.01% per spectral channel. Both planets exhibit water absorption of approximately 200 ppm at the water peak near 1.38 μm. Our result for XO-1b contradicts the much larger absorption derived from NICMOS spectroscopy. The weak water absorption we measure for HD 209458b is reminiscent of the weakness of sodium absorption in the first transmission spectroscopy of an exoplanet atmosphere by Charbonneau et al. Model atmospheres having uniformly distributed extra opacity of 0.012 cm2 g−1 account approximately for both our water measurement and the sodium absorption. Our results for HD 209458b support the picture advocated by Pont et al. in which weak molecular absorptions are superposed on a transmission spectrum that is dominated by continuous opacity due to haze and/or dust. However, the extra opacity needed for HD 209458b is grayer than for HD 189733b, with a weaker Rayleigh component.read more
Citations
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Near-IR transmission spectrum of HAT-P-32 b using HST/WFC3
TL;DR: The analysis of the near-infrared transit spectrum of the hot-Jupiter HAT-P-32b which was recorded with the Wide Field Camera 3 (WFC3) on-board the Hubble Space Telescope (HST) is reported in this paper.
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Five Planets Transiting a Ninth Magnitude Star
Andrew Vanderburg,Juliette C. Becker,Martti H. Kristiansen,Allyson Bieryla,Dmitry A. Duev,Rebecca Jensen-Clem,Timothy D. Morton,David W. Latham,Fred C. Adams,Christoph Baranec,Perry Berlind,Michael L. Calkins,Gilbert A. Esquerdo,Shrinivas R. Kulkarni,Nicholas M. Law,Reed Riddle,Ma�ssa Salama,Allan R. Schmitt +17 more
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Potassium detection in the clear atmosphere of a hot-Jupiter. FORS2 transmission spectroscopy of WASP-17b
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Detection of Na, K, and H2O in the hazy atmosphere of WASP-6b
Aarynn L. Carter,Nikolay Nikolov,David K. Sing,Munazza K. Alam,Jayesh M. Goyal,Jayesh M. Goyal,Thomas Mikal-Evans,Hannah R. Wakeford,Gregory W. Henry,Sam Morrell,Mercedes López-Morales,Barry Smalley,Panayotis Lavvas,Joanna K. Barstow,Antonio García Muñoz,Neale P. Gibson,Paul Wilson +16 more
TL;DR: In this article, the authors presented new observations of the transmission spectrum of the hot Jupiter WASP-6b both from the ground with the Very Large Telescope FOcal Reducer and Spectrograph (FORS2) from 0.45 to 0.83 μm, and space with the Transiting Exoplanet Survey Satellite (TESS) and the Hubble Space Telescope (HST) Wide Field Camera 3 from 1.12 to 1.65 μm.
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HST/STIS transmission spectrum of the ultra-hot Jupiter WASP-76 b confirms the presence of sodium in its atmosphere
C. von Essen,C. von Essen,M. Mallonn,S. Hermansen,M. C. Nixon,Nikku Madhusudhan,Hans Kjeldsen,Hans Kjeldsen,Gražina Tautvaišienė +8 more
TL;DR: In this paper, an atmospheric transmission spectrum of the ultra-hot Jupiter WASP-76 b by analyzing archival data obtained with the Space Telescope Imaging Spectrograph (STIS) on board the Hubble Space Telescope (HST).
References
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Journal ArticleDOI
Analytic Lightcurves for Planetary Transit Searches
Kaisey S. Mandel,Eric Agol +1 more
TL;DR: In this paper, exact analytic formulae for the eclipse of a star described by quadratic or nonlinear limb darkening are presented for the HST observations of HD 209458, showing that the ratio of the planetary to stellar radii is 0.1207+-0.0003.
Journal ArticleDOI
Analytic Light Curves for Planetary Transit Searches
Kaisey S. Mandel,Eric Agol +1 more
TL;DR: In this paper, the exact analytic formulae for the eclipse of a star described by quadratic or nonlinear limb darkening were presented, and the authors applied these results to the Hubble Space Telescope observations of HD 209458, showing that the ratio of the planetary to stellar radii is 0.1207 ± 0.0003.
Journal ArticleDOI
Detection of Planetary Transits Across a Sun-like Star.
TL;DR: High-precision, high-cadence photometric measurements of the star HD 209458 are reported, which is known from radial velocity measurements to have a planetary-mass companion in a close orbit and the detailed shape of the transit curve due to both the limb darkening of thestar and the finite size of the planet is clearly evident.
Journal ArticleDOI
Detection of an Extrasolar Planet Atmosphere
TL;DR: In this paper, high-precision spectrophotometric observations of four planetary transits of HD 209458, in the region of the sodium resonance doublet at 589.3 nm, were reported.
Journal ArticleDOI
Gravity and limb-darkening coefficients for the Kepler, CoRoT, Spitzer, uvby, UBVRIJHK, and Sloan photometric systems
A. Claret,Steven Bloemen +1 more
TL;DR: In this article, a more general differential equation was used, which now takes into account local gravity variations and the effects of convection, which turn out to be very significant for cool stars.
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