Exoplanet biosignatures: understanding oxygen as a biosignature in the context of its environment
VS Meadows, CT Reinhard, GN Arney… - Astrobiology, 2018 - liebertpub.com
We describe how environmental context can help determine whether oxygen (O2) detected
in extrasolar planetary observations is more likely to have a biological source. Here we …
in extrasolar planetary observations is more likely to have a biological source. Here we …
Exoplanet biosignatures: observational prospects
Exoplanet hunting efforts have revealed the prevalence of exotic worlds with diverse
properties, including Earth-sized bodies, which has fueled our endeavor to search for life …
properties, including Earth-sized bodies, which has fueled our endeavor to search for life …
Atomic iron and titanium in the atmosphere of the exoplanet KELT-9b
To constrain the formation history of an exoplanet, we need to know its chemical
composition,–. With an equilibrium temperature of about 4,050 kelvin, the exoplanet KELT …
composition,–. With an equilibrium temperature of about 4,050 kelvin, the exoplanet KELT …
Detection of Fe i in the atmosphere of the ultra-hot Jupiter WASP-121b, and a new likelihood-based approach for Doppler-resolved spectroscopy
NP Gibson, S Merritt, SK Nugroho… - Monthly Notices of …, 2020 - academic.oup.com
High-resolution Doppler-resolved spectroscopy has opened up a new window into the
atmospheres of both transiting and non-transiting exoplanets. Here, we present VLT/UVES …
atmospheres of both transiting and non-transiting exoplanets. Here, we present VLT/UVES …
A spectral survey of an ultra-hot Jupiter-Detection of metals in the transmission spectrum of KELT-9 b
Context. KELT-9 b exemplifies a newly emerging class of short-period gaseous exoplanets
that tend to orbit hot, early type stars–termed ultra-hot Jupiters. The severe stellar irradiation …
that tend to orbit hot, early type stars–termed ultra-hot Jupiters. The severe stellar irradiation …
H2O abundances and cloud properties in ten hot giant exoplanets
A Pinhas, N Madhusudhan, S Gandhi… - Monthly Notices of the …, 2019 - academic.oup.com
Transmission spectroscopy of exoplanets has the potential to provide precise
measurements of atmospheric chemical abundances, in particular of hot Jupiters whose …
measurements of atmospheric chemical abundances, in particular of hot Jupiters whose …
Hot Exoplanet Atmospheres Resolved with Transit Spectroscopy (HEARTS)-IV. A spectral inventory of atoms and molecules in the high-resolution transmission …
Context. WASP-121 b is a hot Jupiter that was recently found to possess rich emission (day
side) and transmission (limb) spectra, suggestive of the presence of a multitude of chemical …
side) and transmission (limb) spectra, suggestive of the presence of a multitude of chemical …
Sulfur dioxide in the mid-infrared transmission spectrum of WASP-39b
The recent inference of sulfur dioxide (SO2) in the atmosphere of the hot (approximately
1,100 K), Saturn-mass exoplanet WASP-39b from near-infrared JWST observations …
1,100 K), Saturn-mass exoplanet WASP-39b from near-infrared JWST observations …
The complete transmission spectrum of WASP-39b with a precise water constraint
WASP-39b is a hot Saturn-mass exoplanet with a predicted clear atmosphere based on
observations in the optical and infrared. Here, we complete the transmission spectrum of the …
observations in the optical and infrared. Here, we complete the transmission spectrum of the …
Detection of titanium oxide in the atmosphere of a hot Jupiter
E Sedaghati, HMJ Boffin, RJ MacDonald, S Gandhi… - Nature, 2017 - nature.com
As an exoplanet transits its host star, some of the light from the star is absorbed by the atoms
and molecules in the planet's atmosphere, causing the planet to seem bigger; plotting the …
and molecules in the planet's atmosphere, causing the planet to seem bigger; plotting the …