dc.contributor.author | Rogers, Justin C. | |
dc.contributor.author | Apai, Daniel | |
dc.contributor.author | Lopez-Morales, M. | |
dc.contributor.author | Sing, David K. | |
dc.contributor.author | Burrows, A.S. | |
dc.date.accessioned | 2014-12-17T14:57:36Z | |
dc.date.issued | 2009-12-07 | |
dc.description.abstract | We report the detection in Ks-band of the secondary eclipse of the hot Jupiter CoRoT-1b from time series photometry
with the ARC 3.5 m telescope at Apache Point Observatory. The eclipse shows a depth of 0.336 ± 0.042% and
is centered at phase 0.5022+0.0023
−0.0027, consistent with a zero eccentricity orbit (e cos ω = 0.0035+0.0036
−0.0042). We perform
the first optical to near-infrared multi-band photometric analysis of an exoplanet’s atmosphere and constrain the
reflected and thermal emissions by combining our result with the recent 0.6, 0.71, and 2.09 μm secondary eclipse
detections by Snellen et al., Gillon et al., and Alonso et al. Comparing the multi-wavelength detections to stateof-
the-art radiative-convective chemical-equilibrium atmosphere models, we find the near-infrared fluxes difficult
to reproduce. The closest blackbody-based and physical models provide the following atmosphere parameters:
a temperature T = 2460+80
−160 K; a very low Bond albedo AB = 0.000+0.081
−0.000; and an energy redistribution
parameter Pn = 0.1, indicating a small but nonzero amount of heat transfer from the day to nightside. The
best physical model suggests a thermal inversion layer with an extra optical absorber of opacity κe = 0.05 cm2 g−1,
placed near the 0.1 bar atmospheric pressure level. This inversion layer is located 10 times deeper in the
atmosphere than the absorbers used in models to fit mid-infrared Spitzer detections of other irradiated hot Jupiters. | en_GB |
dc.description.sponsorship | Space Telescope Science Institute | en_GB |
dc.description.sponsorship | NASA - Hubble Fellowship grant (awarded by the STScI) | en_GB |
dc.description.sponsorship | CNES | en_GB |
dc.description.sponsorship | NASA | en_GB |
dc.description.sponsorship | National Science Foundation | en_GB |
dc.identifier.citation | Vol. 707 (2), pp. 1707-1716 | en_GB |
dc.identifier.doi | 10.1088/0004-637X/707/2/1707 | |
dc.identifier.grantnumber | D0101.90131 | en_GB |
dc.identifier.grantnumber | HF-01210.01-A | en_GB |
dc.identifier.grantnumber | NNX07AG80G | en_GB |
dc.identifier.grantnumber | AST–0908278 | en_GB |
dc.identifier.uri | http://hdl.handle.net/10871/16081 | |
dc.language.iso | en | en_GB |
dc.publisher | IOP Publishing for American Astronomical Society | en_GB |
dc.relation.url | http://hdl.handle.net/10871/16088 | en_GB |
dc.rights | Copyright © 2009 IOP Publishing / American Astronomical Society | |
dc.subject | binaries: eclipsing | en_GB |
dc.subject | planetary systems | en_GB |
dc.subject | stars: individual (CoRoT-1) | en_GB |
dc.subject | techniques: photometric | en_GB |
dc.title | Ks-Band Detection of Thermal Emission and Color Constraints to CoRoT-1b: A Low-Albedo Planet with Inefficient Atmospheric Energy Redistribution and a Temperature Inversion | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2014-12-17T14:57:36Z | |
dc.identifier.issn | 0004-637X | |
dc.description | The erratum to this article is in ORE at http://hdl.handle.net/10871/16088 | |
dc.identifier.eissn | 1538-4357 | |
dc.identifier.journal | Astrophysical Journal | en_GB |