Nondetection of Helium in the Upper Atmospheres of TRAPPIST-1b, e, and f

We obtained high-resolution spectra of the ultracool M-dwarf TRAPPIST-1 during the transit of its planet “b” using two high-dispersion near-infrared spectrographs, the Infrared Doppler (IRD) instrument on the Subaru 8.2m telescope, and the Habitable Zone Planet Finder (HPF) instrument on the 10 m Ho...

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Veröffentlicht in:	The Astronomical journal 2021-09, Vol.162 (3), p.82
Hauptverfasser:	Krishnamurthy, Vigneshwaran, Hirano, Teruyuki, Stefánsson, Gumundur, Ninan, Joe P., Mahadevan, Suvrath, Gaidos, Eric, Kopparapu, Ravi, Sato, Bunei, Hori, Yasunori, Bender, Chad F., Cañas, Caleb I., Diddams, Scott A., Halverson, Samuel, Harakawa, Hiroki, Hawley, Suzanne, Hearty, Fred, Hebb, Leslie, Hodapp, Klaus, Jacobson, Shane, Kanodia, Shubham, Konishi, Mihoko, Kotani, Takayuki, Kowalski, Adam, Kudo, Tomoyuki, Kurokawa, Takashi, Kuzuhara, Masayuki, Lin, Andrea, Maney, Marissa, Metcalf, Andrew J., Morris, Brett, Nishikawa, Jun, Omiya, Masashi, Robertson, Paul, Roy, Arpita, Schwab, Christian, Serizawa, Takuma, Tamura, Motohide, Ueda, Akitoshi, Vievard, Sébastien, Wisniewski, John
Format:	Artikel
Sprache:	eng
Schlagworte:	ABSORPTION Astronomy ASTROPHYSICS, COSMOLOGY AND ASTRONOMY Atmosphere Atmospheric composition Atmospheric models ATOMIC AND MOLECULAR PHYSICS Circumstellar habitable zone Energy limitation HELIUM Infrared instruments Infrared spectra MASS TRANSFER MOLECULAR WEIGHT Near infrared radiation Planetary atmospheres PLANETS Polar environments SPECTRA Spectrographs SPECTROSCOPY Spectrum analysis Steering STELLAR WINDS TELESCOPES Transit time Upper atmosphere Wind
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