Are These Planets or Brown Dwarfs? Broadly Solar Compositions from High-resolution Atmospheric Retrievals of ∼10–30 M Jup Companions

Using Keck Planet Imager and Characterizer high-resolution ( R ∼ 35,000) spectroscopy from 2.29 to 2.49 μ m, we present uniform atmospheric retrievals for eight young substellar companions with masses of ∼10–30 M Jup , orbital separations spanning ∼50–360 au, and T eff between ∼1500 and 2600 K. We f...

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Veröffentlicht in:	The Astrophysical journal 2024-07, Vol.970 (1), p.71
Hauptverfasser:	Xuan, Jerry W., Hsu, Chih-Chun, Finnerty, Luke, Wang, Jason, Ruffio, Jean-Baptiste, Zhang, Yapeng, Knutson, Heather A., Mawet, Dimitri, Mamajek, Eric E., Inglis, Julie, Wallack, Nicole L., Bryan, Marta L., Blake, Geoffrey A., Mollière, Paul, Hejazi, Neda, Baker, Ashley, Bartos, Randall, Calvin, Benjamin, Cetre, Sylvain, Delorme, Jacques-Robert, Doppmann, Greg, Echeverri, Daniel, Fitzgerald, Michael P., Jovanovic, Nemanja, Liberman, Joshua, López, Ronald A., Morris, Evan, Pezzato, Jacklyn, Sappey, Ben, Schofield, Tobias, Skemer, Andrew, Wallace, J. Kent, Wang, Ji, Agrawal, Shubh, Horstman, Katelyn
Format:	Artikel
Sprache:	eng
Schlagworte:	Atmospheric clouds Brown dwarfs Exoplanet atmospheres Exoplanet atmospheric composition Exoplanet formation High resolution spectroscopy Substellar companion stars
Online-Zugang:	Volltext
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