Results 21 to 30 of about 6,459 (144)

Emergent Exoplanet Flux: Review of the Spitzer Results [PDF]

, 2008
Observations using the Spitzer Space Telescope provided the first detections of photons from extrasolar planets. Spitzer observations are allowing us to infer the temperature structure, composition, and dynamics of exoplanet atmospheres.
Bouchy, Charbonneau, Demory, Drake Deming, Gillon, Morales-Calderon, Showman   +6 more
core   +1 more source

Sodium Absorption From the Exoplanetary Atmosphere of HD189733b Detected in the Optical Transmission Spectrum [PDF]

, 2007
We present the first ground-based detection of sodium absorption in the transmission spectrum of an extrasolar planet. Absorption due to the atmosphere of the extrasolar planet HD189733b is detected in both lines of the NaI doublet.
Lars Koesterke, Michael Endl, Narita N., Seth Redfield, William D. Cochran, Winn J. N.   +5 more
core   +2 more sources

A Blind Search for Transit Depth Variability with TESS

The Astronomical Journal, 2023
The phenomenon of transit depth variability offers a pathway through which processes such as exoplanet atmospheric activity and orbital dynamics can be studied.
Gavin Wang, Néstor Espinoza
doaj   +1 more source

Updated Spitzer Emission Spectroscopy of Bright Transiting Hot Jupiter HD189733b [PDF]

, 2014
We analyze all existing secondary eclipse time series spectroscopy of hot Jupiter HD189733b acquired with the now defunct Spitzer/IRS instrument. We describe the novel approaches we develop to remove the systematic effects and extract accurate secondary ...
Burrows, Adam S., Deming, Drake, Grillmair, Carl J., Todorov, Kamen O.   +3 more
core   +2 more sources

A Lack of Variability between Repeated Spitzer Phase Curves of WASP-43b

The Astronomical Journal, 2023
Though the global atmospheres of hot Jupiters have been extensively studied using phase curve observations, the level of time variability in these data is not well constrained.
Matthew M. Murphy, Thomas G. Beatty, Michael T. Roman, Isaac Malsky, Alex Wingate, Grace Ochs, L. Cinque, Hayley Beltz, Emily Rauscher, Eliza M.-R. Kempton, Kevin B. Stevenson   +10 more
doaj   +1 more source

Non-detection of L-band Line Emission from the Exoplanet HD189733b [PDF]

, 2010
We attempt to confirm bright non-local thermodynamic equilibrium (non-LTE) emission from the exoplanet HD 189733b at 3.25 μm, as recently reported by Swain et al. based on observations at low spectral resolving power (λ/δλ ≈ 30).
Blake, Geoffrey A., Deming, L. Drake, Knutson, Heather A., Mandell, Avi M., Mumma, Michael J., Salyk, Colette, Villanueva, Geronimo L.   +6 more
core   +2 more sources

Mapping Exoplanets

, 2020
The varied surfaces and atmospheres of planets make them interesting places to live, explore, and study from afar. Unfortunately, the great distance to exoplanets makes it impossible to resolve their disk with current or near-term technology. It is still
A Shporer, AP Showman, B Drummond, BJ Foley, BJ Foley, BJ Foley, BO Demory, C Beichman, C Dorn, C Majeau, C Marois, D Angerhausen, D Apai, D Charbonneau, D Deming, D Höning, D Keating, D Keating, D Sudarsky, D Veras, DJ Armstrong, DM Williams, DS Abbot, E Agol, E Buenzli, E Gaidos, E Pallé, E Rauscher, E Rauscher, EMR Kempton, H Kawahara, H Kawahara, H Kawahara, H Kawahara, HA Knutson, HA Knutson, HM Haggard, HN Russell, I Dobbs-Dixon, I Dobbs-Dixon, I Dobbs-Dixon, I Gómez-Leal, IAG Snellen, IJM Crossfield, J de Wit, J Lustig-Yaeger, JC Schwartz, JC Schwartz, JH Jiang, K Heng, K Mandel, KB Stevenson, L Dang, L Rossi, LJ Esteves, LJ Esteves, M Aizawa, M Brogi, M Roman, MAS McTier, MF Sterzik, NB Cowan, NB Cowan, NB Cowan, NB Cowan, NB Cowan, NB Cowan, NB Cowan, NB Cowan, NB Cowan, NB Cowan, NK Lewis, PGJ Irwin, PHH Oakley, PKG Williams, R Luger, R Luger, S Fan, T Karalidi, T Louden, T Louden, TD Robinson, TD Robinson, TD Robinson, TG Beatty, TJ Bell, V Kostov, V Parmentier, Y Fujii, Y Fujii, Y Fujii, YK Feng   +91 more
core   +1 more source

The Transit Light Source Effect: False Spectral Features and Incorrect Densities for M-dwarf Transiting Planets

, 2018
Transmission spectra are differential measurements that utilize stellar illumination to probe transiting exoplanet atmospheres. Any spectral difference between the illuminating light source and the disk-integrated stellar spectrum due to starspots and ...
Apai, Dániel, Giampapa, Mark S., Rackham, Benjamin V.   +2 more
core   +1 more source

A new view on exoplanet transits: Transit of Venus described using three-dimensional solar atmosphere Stagger-grid simulations [PDF]

, 2015
Stellar activity and, in particular, convection-related surface structures, potentially cause fluctuations that can affect the transit light curves. Surface convection simulations can help the interpretation of ToV.
Asplund, M., Chiavassa, A., Collet, R., Faurobert, M., Magic, Z., Pere, C., Ricort, G., Tanga, P.   +7 more
core   +3 more sources

Observations of Exoplanet Atmospheres

, 2015
Detailed characterization of an extrasolar planet's atmosphere provides the best hope for distinguishing the makeup of its outer layers, and the only hope for understanding the interplay between initial composition, chemistry, dynamics & circulation, and
Crossfield, Ian J. M.
core   +1 more source