Results 41 to 50 of about 53,484 (152)
Magnetospheres of Terrestrial Exoplanets and Exomoons: Implications for Habitability and Detection [PDF]
The Astrophysical Journal Letters, Vol. 907, L45 (2021), 2020 Characterizing habitable exoplanets and/or their moons is of paramount importance. Here we show the results of our magnetic field topological modeling which demonstrate that terrestrial exoplanet-exomoon coupled magnetospheres work together to protect the early atmospheres of both the exoplanet and the exomoon.
arxiv +1 more source
Featureless transmission spectra of 12 giant exoplanets observed by GTC/OSIRIS [PDF]
A&A 675, A62 (2023), 2023 Exoplanet atmospheres are the key to understanding the nature of exoplanets. To this end, transit spectrophotometry provides us opportunities to investigate the physical properties and chemical compositions of exoplanet atmospheres. We aim to detect potential atmospheric signatures in 12 gaseous giant exoplanets using transit spectrophotometry and we ...
arxiv +1 more source
NIMBUS: The Near-Infrared Multi-Band Ultraprecise Spectroimager for SOFIA [PDF]
, 2012 We present a new and innovative near-infrared multi-band ultraprecise spectroimager (NIMBUS) for SOFIA. This design is capable of characterizing a large sample of extrasolar planet atmospheres by measuring elemental and molecular abundances during ...
Amatucci, Edward +22 more
core +3 more sources
Atmospheric Dynamics of Hot Exoplanets [PDF]
Annual Review of Earth and Planetary Sciences, 2015 The characterization of exoplanetary atmospheres has come of age in the past decade, as astronomical techniques now allow for albedos, chemical abundances, temperature profiles and maps, rotation periods, and even wind speeds to be measured. Atmospheric dynamics sets the background state of density, temperature, and velocity that determines or ...
Kevin Heng, Adam P. Showman
openaire +3 more sources
The Astrophysical Journal, 2023 In order to understand the results of recent observations of exoplanets, models have become increasingly complex. Unfortunately, this increases both the computational cost and output size of said models.
F. Sainsbury-Martinez +5 more
doaj +1 more source
H$_2$-dominated Atmosphere as an Indicator of Second-generation Rocky White Dwarf Exoplanets [PDF]
, 2022 Following the discovery of the first exoplanet candidate transiting a white dwarf (WD), a "white dwarf opportunity" for characterizing the atmospheres of terrestrial exoplanets around WDs is emerging. Large planet-to-star size ratios and hence large transit depths make transiting WD exoplanets favorable targets for transmission spectroscopy ...
arxiv +1 more source
Phosphine as a Biosignature Gas in Exoplanet Atmospheres [PDF]
Astrobiology, 2020 Accepted to Astrobiology.
Sousa-Silva, Clara +6 more
openaire +6 more sources
Spectral Retrieval with JWST Photometric data: a Case Study for HIP 65426 b
The Astronomical Journal, 2023 Half of the JWST high-contrast imaging objects will only have photometric data as of Cycle 2. However, to better understand their atmospheric chemistry that informs formation origin, spectroscopic data are preferred.
Ji Wang
doaj +1 more source
Water on Hot Rocky Exoplanets [PDF]
, 2021 Data suggest that most rocky exoplanets with orbital period $p$ $<$ 100 d ("hot" rocky exoplanets) formed as gas-rich sub-Neptunes that subsequently lost most of their envelopes, but whether these rocky exoplanets still have atmospheres is unknown. We identify a pathway by which 1-1.7 $R_{Earth}$ (1-10 $M_{Earth}$) rocky exoplanets with orbital periods
arxiv +1 more source
Spectra as windows into exoplanet atmospheres [PDF]
Proceedings of the National Academy of Sciences, 2014 Understanding a planet’s atmosphere is a necessary condition for understanding not only the planet itself, but also its formation, structure, evolution, and habitability. This requirement puts a premium on obtaining spectra and developing credible interpretative tools with which to retrieve vital planetary information.
openaire +3 more sources