VLT transit and occultation photometry for the bloated planet CoRoT-1b

M. Gillon; B. O. Demory; A. H.M.J. Triaud; T. Barman; L. Hebb; J. Montalbán; P. F.L. Maxted; D. Queloz; M. Deleuil; P. Magain

doi:10.1051/0004-6361/200912231

VLT transit and occultation photometry for the bloated planet CoRoT-1b

M. Gillon
, B. O. Demory
, A. H.M.J. Triaud
, T. Barman
, L. Hebb
, J. Montalbán
, P. F.L. Maxted
, D. Queloz
, M. Deleuil
, P. Magain

Research output: Contribution to journal › Review article › peer-review

71 Scopus citations

Abstract

We present VLT eclipse photometry for the giant planet CoRoT-1b. We observed a transit in the R-band filter and an occultation in a narrow filter centered on 2.09 μm. Our analysis of this new photometry and published radial velocities, in combination with stellar-evolutionary modeling, leads to a planetary mass and radius of 1.07_-0.18^+0.13 M _Jup and 1.45_-0.13^+0.07 R_Jup, confirming the very low density previously deduced from CoRoT photometry. The large occultation depth that we measure at 2.09 μm (0.278 _-0.066^+0.043%) is consistent with thermal emission and is better reproduced by an atmospheric model with no redistribution of the absorbed stellar flux to the night side of the planet.

Original language	English (US)
Pages (from-to)	359-367
Number of pages	9
Journal	Astronomy and astrophysics
Volume	506
Issue number	1
DOIs	https://doi.org/10.1051/0004-6361/200912231
State	Published - 2009
Externally published	Yes

Keywords

Binaries: Eclipsing
Infrared: Stars
Planetary systems
Stars: Individual: CoRoT-1
Techniques: Photometric
Techniques: Radial velocities

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1051/0004-6361/200912231

Cite this

@article{3d68c609a54040c1a26f5d2e9cc01e47,

title = "VLT transit and occultation photometry for the bloated planet CoRoT-1b",

abstract = "We present VLT eclipse photometry for the giant planet CoRoT-1b. We observed a transit in the R-band filter and an occultation in a narrow filter centered on 2.09 μm. Our analysis of this new photometry and published radial velocities, in combination with stellar-evolutionary modeling, leads to a planetary mass and radius of 1.07-0.18+0.13 M Jup and 1.45-0.13+0.07 RJup, confirming the very low density previously deduced from CoRoT photometry. The large occultation depth that we measure at 2.09 μm (0.278 -0.066+0.043\%) is consistent with thermal emission and is better reproduced by an atmospheric model with no redistribution of the absorbed stellar flux to the night side of the planet.",

keywords = "Binaries: Eclipsing, Infrared: Stars, Planetary systems, Stars: Individual: CoRoT-1, Techniques: Photometric, Techniques: Radial velocities",

author = "M. Gillon and Demory, \{B. O.\} and Triaud, \{A. H.M.J.\} and T. Barman and L. Hebb and J. Montalb{\'a}n and Maxted, \{P. F.L.\} and D. Queloz and M. Deleuil and P. Magain",

year = "2009",

doi = "10.1051/0004-6361/200912231",

language = "English (US)",

volume = "506",

pages = "359--367",

journal = "Astronomy and astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

number = "1",

}

TY - JOUR

T1 - VLT transit and occultation photometry for the bloated planet CoRoT-1b

AU - Gillon, M.

AU - Demory, B. O.

AU - Triaud, A. H.M.J.

AU - Barman, T.

AU - Hebb, L.

AU - Montalbán, J.

AU - Maxted, P. F.L.

AU - Queloz, D.

AU - Deleuil, M.

AU - Magain, P.

PY - 2009

Y1 - 2009

N2 - We present VLT eclipse photometry for the giant planet CoRoT-1b. We observed a transit in the R-band filter and an occultation in a narrow filter centered on 2.09 μm. Our analysis of this new photometry and published radial velocities, in combination with stellar-evolutionary modeling, leads to a planetary mass and radius of 1.07-0.18+0.13 M Jup and 1.45-0.13+0.07 RJup, confirming the very low density previously deduced from CoRoT photometry. The large occultation depth that we measure at 2.09 μm (0.278 -0.066+0.043%) is consistent with thermal emission and is better reproduced by an atmospheric model with no redistribution of the absorbed stellar flux to the night side of the planet.

AB - We present VLT eclipse photometry for the giant planet CoRoT-1b. We observed a transit in the R-band filter and an occultation in a narrow filter centered on 2.09 μm. Our analysis of this new photometry and published radial velocities, in combination with stellar-evolutionary modeling, leads to a planetary mass and radius of 1.07-0.18+0.13 M Jup and 1.45-0.13+0.07 RJup, confirming the very low density previously deduced from CoRoT photometry. The large occultation depth that we measure at 2.09 μm (0.278 -0.066+0.043%) is consistent with thermal emission and is better reproduced by an atmospheric model with no redistribution of the absorbed stellar flux to the night side of the planet.

KW - Binaries: Eclipsing

KW - Infrared: Stars

KW - Planetary systems

KW - Stars: Individual: CoRoT-1

KW - Techniques: Photometric

KW - Techniques: Radial velocities

UR - https://www.scopus.com/pages/publications/84884262405

UR - https://www.scopus.com/pages/publications/84884262405#tab=citedBy

U2 - 10.1051/0004-6361/200912231

DO - 10.1051/0004-6361/200912231

M3 - Review article

AN - SCOPUS:84884262405

SN - 0004-6361

VL - 506

SP - 359

EP - 367

JO - Astronomy and astrophysics

JF - Astronomy and astrophysics

IS - 1

ER -

VLT transit and occultation photometry for the bloated planet CoRoT-1b

Abstract

Keywords

ASJC Scopus subject areas

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