CHARACTERIZING TRANSITING EXOPLANET ATMOSPHERES WITH JWST
- T. Greene, M. Line, C. Montero, J. Fortney, J. Lustig-Yaeger, Kyle Luther
- Physics, Geology
- 17 November 2015
We explore how well spectra from the James Webb Space Telescope (JWST) will likely constrain bulk atmospheric properties of transiting exoplanets. We start by modeling the atmospheres of archetypal…
Thermal structure of an exoplanet atmosphere from phase-resolved emission spectroscopy
- K. Stevenson, J. Désert, D. Homeier
- Physics, GeologyScience
- 8 October 2014
Spectroscopic thermal emission measurements as a function of orbital phase (“phase-curve observations”) for the highly irradiated exoplanet WASP-43b spanning three full planet rotations using the Hubble Space Telescope are presented.
Discovery and spectroscopy of the young jovian planet 51 Eri b with the Gemini Planet Imager
- B. Macintosh, J. Graham, B. Zuckerman
- Physics, GeologyScience
- 12 August 2015
Using the Gemini Planet Imager, a Jupiter-like planet is discovered orbiting the ~20-million-year-old star 51 Eridani at a projected separation of 13 astronomical units and has a methane signature and is probably the smallest exoplanet that has been directly imaged.
INFRARED TRANSMISSION SPECTROSCOPY OF THE EXOPLANETS HD 209458b AND XO-1b USING THE WIDE FIELD CAMERA-3 ON THE HUBBLE SPACE TELESCOPE
- D. Deming, A. Wilkins, A. Showman
- Physics, Geology
- 5 February 2013
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…
From thermal dissociation to condensation in the atmospheres of ultra hot Jupiters: WASP-121b in context
- V. Parmentier, M. Line, M. Marley
- Physics, GeologyAstronomy & Astrophysics
- 30 April 2018
Context. A new class of exoplanets has emerged: the ultra hot Jupiters, the hottest close-in gas giants. The majority of them have weaker-than-expected spectral features in the 1.1−1.7 μm bandpass…
A PRECISE WATER ABUNDANCE MEASUREMENT FOR THE HOT JUPITER WASP-43b
- L. Kreidberg, J. Bean, D. Homeier
- Physics, Geology
- 12 September 2014
The water abundance in a planetary atmosphere provides a key constraint on the planet's primordial origins because water ice is expected to play an important role in the core accretion model of…
A SYSTEMATIC RETRIEVAL ANALYSIS OF SECONDARY ECLIPSE SPECTRA. I. A COMPARISON OF ATMOSPHERIC RETRIEVAL TECHNIQUES
Exoplanet atmosphere spectroscopy enables us to improve our understanding of exoplanets just as remote sensing in our own solar system has increased our understanding of the solar system bodies. The…
COMPOSITIONAL DIVERSITY IN THE ATMOSPHERES OF HOT NEPTUNES, WITH APPLICATION TO GJ 436b
- J. Moses, M. Line, N. Madhusudhan
- Geology, PhysicsAstrophysical Journal
- 21 June 2013
The predicted equilibrium and disequilibrium chemistry of generic hot Neptunes is explored and it is concluded that although the spectral fit from the high-metallicity forward models is not quite as good as the best fit obtained from pure retrieval methods, the atmospheric composition predicted is more physically and chemically plausible in terms of the relative abundance of major constituents.
A DETECTION OF WATER IN THE TRANSMISSION SPECTRUM OF THE HOT JUPITER WASP-12b AND IMPLICATIONS FOR ITS ATMOSPHERIC COMPOSITION
- L. Kreidberg, M. Line, A. Showman
- Physics, Geology
- 21 April 2015
Detailed characterization of exoplanets has begun to yield measurements of their atmospheric properties that constrain the planets’ origins and evolution. For example, past observations of the…
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