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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.
Astronomy and astrophysics (Berlin), 09/2011, Letnik: 533Journal Article
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 \hbox{$2.08^{+0.16}_{-0.17}\: R_\oplus$}2.08-0.17+0.16R⊕ as measured in IRAC 4.5 μm channel. A planetary mass of \hbox{$7.81_{-0.53}^{+0.58}\: M_\oplus$}7.81-0.53+0.58M⊕ is derived from an extensive set of radial-velocity data, yielding a mean planetary density of \hbox{$4.78_{-1.20}^{+1.31}$}4.78-1.20+1.31 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.
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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in: SICRIS
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