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Thermal Phase Curves in Hot Gas Giant Exoplanets Exhibit a Complex Dependence on Planetary Properties
Mark R Swain, Kyle A Pearson, Thaddeus D. Komacek +5
We present a catalog of uniformly processed 3.6-m and 4.5-m band exoplanet thermal phase curves based on Infrared Array Camera observations obtained from the Spitzer Heritage…
Exploring the atmosphere of GJ 1132 b with CRIRES+
E. Palle, F. Yan, G. Morello +8
With a mass, radius, and mean density similar to Earth's, the rocky planet GJ 1132 b is the first truly small planet for which an atmosphere detection was proposed. If confirmed, u…
Planet Mass and Metallicity: The Exoplanets and Solar System Connection
Mark R. Swain, Yasuhiro Hasegawa, Daniel P. Thorngren +1
Theoretical studies of giant planet formation suggest that substantial quantities of metals - elements heavier than hydrogen and helium - can be delivered by solid accretion during…
Comparing transit spectroscopy pipelines at the catalogue level: evidence for systematic differences
Lorenzo V. Mugnai, Mark R. Swain, Raissa Estrela +1
The challenge of inconsistent results from different data pipelines, even when starting from identical data, is a recognized concern in exoplanetary science. As we transition into…
Identification of carbon dioxide in an exoplanet atmosphere
The JWST Transiting Exoplanet Community Early Release Science Team, Eva-Maria Ahrer, Lili Alderson +129
Carbon dioxide (CO2) is a key chemical species that is found in a wide range of planetary atmospheres. In the context of exoplanets, CO2 is an indicator of the metal enrichment (i.…
A Temperature Trend for Clouds and Hazes in Exoplanets Atmospheres
Raissa Estrela, Mark Swain, Gael Roudier
The transmission spectra of exoplanet atmospheres observed with the Hubble Space Telescope (HST) in the near-infrared range (1.1-1.65m) frequently show evidence for some combina…
A unique hot Jupiter spectral sequence with evidence for compositional diversity
Megan Mansfield, Michael R. Line, Jacob L. Bean +11
The emergent spectra of close-in, giant exoplanets ("hot Jupiters") are expected to be distinct from those of self-luminous objects with similar effective temperatures because hot…
Detection of Aerosols at Microbar Pressures in an Exoplanet Atmosphere
Raissa Estrela, Mark Swain, Gael Roudier +3
Formation of hazes at microbar pressures has been explored by theoretical models of exoplanet atmospheres to explain Rayleigh scattering and/or featureless transmission spectra, ho…
Detection of an Atmosphere on a Rocky Exoplanet
Mark R. Swain, Raissa Estrela, Gael M. Roudier +7
We report the detection of an atmosphere on a rocky exoplanet, GJ 1132 b, which is similar to Earth in terms of size and density. The atmospheric transmission spectrum was detected…
Utilizing Small Telescopes Operated by Citizen Scientists for Transiting Exoplanet Follow-up
Robert T. Zellem, Kyle A. Pearson, Ethan Blaser +41
Due to the efforts by numerous ground-based surveys and NASA's Kepler and TESS, there will be hundreds, if not thousands, of transiting exoplanets ideal for atmospheric characteriz…
Constraining Exoplanet Metallicities and Aerosols with ARIEL: An Independent Study by the Contribution to ARIEL Spectroscopy of Exoplanets (CASE) Team
Robert T. Zellem, Mark R. Swain, Nicolas B. Cowan +24
Launching in 2028, ESA's Atmospheric Remote-sensing Exoplanet Large-survey (ARIEL) survey of 1000 transiting exoplanets will build on the legacies of Kepler and TESS and comp…
Two Terrestrial Planet Families With Different Origins
Mark Swain, Raissa Estrela, Christophe Sotin +2
The potentially important role of stellar irradiation in envelope removal for planets with diameters of 2 R$_{\Earth}$ has been inferred both through theoretical work…
Ground-based Spectroscopy of the Exoplanet XO-2b using a Systematic Wavelength Calibration
Kyle A. Pearson, Caitlin A. Griffith, Robert T. Zellem +2
Exoplanets orbiting close to their host star are expected to support a large ionosphere, which extends to larger pressures than witnessed in our Solar System. These ionospheres can…
Additional Exoplanet Science Enabled by FINESSE
Robert T. Zellem, Jonathan J. Fortney, Mark R. Swain +10
FINESSE, a NASA MIDEX mission in Step 2, would conduct a large, uniform survey of exoplanet atmospheres and create a statistically significant sample for comparative planetology. F…
The Transiting Exoplanet Community Early Release Science Program for JWST
Jacob L. Bean, Kevin B. Stevenson, Natalie M. Batalha +99
The James Webb Space Telescope (JWST) presents the opportunity to transform our understanding of planets and the origins of life by revealing the atmospheric compositions, structur…
Forecasting the Impact of Stellar Activity on Transiting Exoplanet Spectra
Robert T. Zellem, Mark R. Swain, Gael Roudier +8
Exoplanet host star activity, in the form of unocculted star spots or faculae, alters the observed transmission and emission spectra of the exoplanet. This effect can be exacerbate…
Planck intermediate results. LII. Planet flux densities
Planck Collaboration, Y. Akrami, M. Ashdown +147
Measurements of flux density are described for five planets, Mars, Jupiter, Saturn, Uranus, and Neptune, across the six Planck High Frequency Instrument frequency bands (100-857 GH…
A Characteristic Transmission Spectrum dominated by HO applies to the majority of HST/WFC3 exoplanet observations
Aishwarya R. Iyer, Mark R. Swain, Robert T. Zellem +4
Currently, 19 transiting exoplanets have published transmission spectra obtained with the Hubble/WFC3 G141 near-IR grism. Using this sample, we have undertaken a uniform analysis i…