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

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

Research output: Contribution to journalArticle

62 Citations (Scopus)

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.

Original languageEnglish (US)
Pages (from-to)359-367
Number of pages9
JournalAstronomy and Astrophysics
Volume506
Issue number1
DOIs
StatePublished - 2009
Externally publishedYes

Fingerprint

occultation
transit
photometry
planets
planet
filter
planetary mass
filters
atmospheric models
eclipses
thermal emission
night
radial velocity
modeling
radii
analysis
atmospheric model

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

Cite this

Gillon, M., Demory, B. O., Triaud, A. H. M. J., Barman, T. S., Hebb, L., Montalbán, J., ... Magain, P. (2009). VLT transit and occultation photometry for the bloated planet CoRoT-1b. Astronomy and Astrophysics, 506(1), 359-367. https://doi.org/10.1051/0004-6361/200912231

VLT transit and occultation photometry for the bloated planet CoRoT-1b. / Gillon, M.; Demory, B. O.; Triaud, A. H M J; Barman, Travis S; Hebb, L.; Montalbán, J.; Maxted, P. F L; Queloz, D.; Deleuil, M.; Magain, P.

In: Astronomy and Astrophysics, Vol. 506, No. 1, 2009, p. 359-367.

Research output: Contribution to journalArticle

Gillon, M, Demory, BO, Triaud, AHMJ, Barman, TS, Hebb, L, Montalbán, J, Maxted, PFL, Queloz, D, Deleuil, M & Magain, P 2009, 'VLT transit and occultation photometry for the bloated planet CoRoT-1b', Astronomy and Astrophysics, vol. 506, no. 1, pp. 359-367. https://doi.org/10.1051/0004-6361/200912231
Gillon, M. ; Demory, B. O. ; Triaud, A. H M J ; Barman, Travis S ; Hebb, L. ; Montalbán, J. ; Maxted, P. F L ; Queloz, D. ; Deleuil, M. ; Magain, P. / VLT transit and occultation photometry for the bloated planet CoRoT-1b. In: Astronomy and Astrophysics. 2009 ; Vol. 506, No. 1. pp. 359-367.
@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 Barman, {Travis S} 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, Travis S

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 - http://www.scopus.com/inward/record.url?scp=84884262405&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84884262405&partnerID=8YFLogxK

U2 - 10.1051/0004-6361/200912231

DO - 10.1051/0004-6361/200912231

M3 - Article

AN - SCOPUS:84884262405

VL - 506

SP - 359

EP - 367

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

SN - 0004-6361

IS - 1

ER -