Demory, B.-O.; Gillon, M.; Deming, D.; Valencia, D.; Seager, S.; Benneke, B.; Lovis, C.; Cubillos, P.; Harrington, J.; Stevenson, K. B.; Mayor, M.; Pepe, F.; Queloz, D.; Ségransan, D.; Udry, S. (2011). Detection of a transit of the super-Earth 55 Cancri e with warm Spitzer. Astronomy and astrophysics, 533, A114. EDP Sciences 10.1051/0004-6361/201117178
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We report on the detection of a transit of the super-Earth 55 Cnc e with warm Spitzer in IRAC’s 4.5 μm band. Our MCMC analysis includes an extensive modeling of the systematic effects affecting warm Spitzer photometry, and yields a transit depth of 410 ± 63 ppm, which translates to a planetary radius of 2.08+0.16 -0.17 R⊕ as measured in IRAC 4.5 μm channel. A planetary mass of 7.81+0.58-0.53 M⊕ is derived from an extensive set of radial-velocity data, yielding a mean planetary density of 4.78+1.31-1.20 g cm-3. Thanks to the brightness of its host star (V = 6, K = 4), 55 Cnc e is a unique target for the thorough characterization of a super-Earth orbiting around a solar-type star.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
10 Strategic Research Centers > Center for Space and Habitability (CSH) |
UniBE Contributor: |
Demory, Brice-Olivier Denys |
Subjects: |
500 Science > 520 Astronomy |
ISSN: |
0004-6361 |
Publisher: |
EDP Sciences |
Language: |
English |
Submitter: |
Brice-Olivier Denys Demory |
Date Deposited: |
05 Apr 2022 13:41 |
Last Modified: |
02 Mar 2023 23:34 |
Publisher DOI: |
10.1051/0004-6361/201117178 |
BORIS DOI: |
10.48350/153325 |
URI: |
https://boris.unibe.ch/id/eprint/153325 |
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