Exoplanet atmospheres

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The vector-apodizing phase plate coronagraph: design, current performance, and future development

(2021)

Authors:

DS Doelman, F Snik, EH Por, SP Bos, GPPL Otten, M Kenworthy, SY Haffert, M Wilby, AJ Bohn, BJ Sutlieff, K Miller, M Ouellet, J de Boer, CU Keller, MJ Escuti, S Shi, NZ Warriner, KJ Hornburg, JL Birkby, J Males, KM Morzinski, LM Close, J Codona, J Long, L Schatz, J Lumbres, A Rodack, K Van Gorkom, A Hedglen, O Guyon, J Lozi, T Groff, J Chilcote, N Jovanovic, S Thibault, C de Jonge, G Allain, C Vallée, D Patel, O Côté, C Marois, P Hinz, J Stone, A Skemer, Z Briesemeister, A Boehle, AM Glauser, W Taylor, P Baudoz, E Huby, O Absil, B Carlomagno, C Delacroix
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Upper limits for phosphine (PH3) in the atmosphere of Mars

Astronomy and Astrophysics EDP Sciences 649:May 2021 (2021) L1

Authors:

Ks Olsen, A Trokhimovskiy, As Braude, O Korablev, A Fedorova, Colin Wilson, Patrick Irwin, Juan Alday Parejo

Abstract:

Phosphine (PH3) is proposed to be a possible biomarker in planetary atmospheres and has been claimed to have been observed in the atmosphere of Venus, sparking interest in the habitability of Venus’s atmosphere. Observations of another biomarker, methane (CH4), have been reported several times in the atmosphere of Mars, hinting at the possibility of a past or present biosphere. The Atmospheric Chemistry Suite on the ExoMars Trace Gas Orbiter has a spectral range that includes several absorption lines of PH3 with line strengths comparable to previously observed CH4 lines. The signature of PH3 was not observed in the 192 observations made over a full Martian year of observations, and here we report upper limits of 0.1–0.6 ppbv.
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3D convection-resolving model of temperate, tidally-locked exoplanets

ArXiv 2104.05559 (2021)

Authors:

Maxence Lefèvre, Martin Turbet, Raymond Pierrehumbert
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Erratum: “Reinflation of Warm and Hot Jupiters” (2020, ApJ, 893, 36)

The Astrophysical Journal American Astronomical Society 910:2 (2021) 164

Authors:

Thaddeus D Komacek, Daniel P Thorngren, Eric D Lopez, Sivan Ginzburg
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Water Ice Cloud Variability and Multi-epoch Transmission Spectra of TRAPPIST-1e

The Astrophysical Journal Letters American Astronomical Society 911:2 (2021) l30

Authors:

EM May, J Taylor, TD Komacek, MR Line, V Parmentier
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