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K2 and Spitzer phase curves of the rocky ultra-short-period planet K2-141 b hint at a tenuous rock vapor atmosphere

Abstract:

K2-141 b is a transiting, small (1.5 R⊕) ultra-short-period (USP) planet discovered by the Kepler space telescope orbiting a K-dwarf host star every 6.7 h. The planet's high surface temperature of more than 2000 K makes it an excellent target for thermal emission observations. Here we present 65 h of continuous photometric observations of K2-141 b collected with Spitzer's Infrared Array Camera (IRAC) Channel 2 at 4.5 μm spanning ten full orbits of the planet. We measured an infrared eclipse d...

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Publication status:
Published
Peer review status:
Peer reviewed

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Files:
Publisher copy:
10.1051/0004-6361/202142912

Authors


Publisher:
EDP Sciences
Journal:
Astronomy and Astrophysics More from this journal
Volume:
664
Article number:
A79
Publication date:
2022-08-11
Acceptance date:
2022-03-01
DOI:
EISSN:
1432-0746
ISSN:
0004-6361
Language:
English
Keywords:
Pubs id:
1264207
Local pid:
pubs:1264207
Deposit date:
2022-06-20

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