Multicolor observations of a planetary transit of HD 209458

Jha Saurabh; David Charbonneau; Peter M. Garnavich; Denis J. Sullivan; Tiri Sullivan; Timothy M. Brown; John L. Tonry

Multicolor observations of a planetary transit of HD 209458

Jha Saurabh, David Charbonneau, Peter M. Garnavich, Denis J. Sullivan, Tiri Sullivan, Timothy M. Brown, John L. Tonry

Research output: Contribution to journal › Article › peer-review

Abstract

We present BVRIZ photometric observations of HD 209458 during the transit by its planetary companion on UT 1999 November 15 with the University of Hawaii 0.6 and 2.2 m telescopes and the High Altitude Observatory STARE telescope. The detailed shape of the transit curve is predicted to vary with color primarily as a result of the color-dependent limb darkening of the star but potentially due as well to the effect of color-dependent opacity in the planetary atmosphere. We model the light curves and present refined values for the transit timing and orbital period, useful for planning future observations of the planetary transit. We also derive significantly improved measurements of the planetary radius, R_p = 1.55 ± 0.10 R_Jup, stellar radius, R_s = 1.27 ± 0.05 R_⊙, and orbital inclination, i = 85°.9 ± 0°.5. The derived planetary radius favors evolutionary models in which the planet has a low albedo.

Original language	English (US)
Pages (from-to)	L45-L48
Journal	Astrophysical Journal
Volume	540
Issue number	1 PART 2
State	Published - Sep 1 2000
Externally published	Yes

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

Binaries: eclipsing
Planetary systems
Stars: individual (HD 209458)
Techniques: photometric

Cite this

@article{bc7c31bfff0e426cb98242c5ad5a888e,

title = "Multicolor observations of a planetary transit of HD 209458",

abstract = "We present BVRIZ photometric observations of HD 209458 during the transit by its planetary companion on UT 1999 November 15 with the University of Hawaii 0.6 and 2.2 m telescopes and the High Altitude Observatory STARE telescope. The detailed shape of the transit curve is predicted to vary with color primarily as a result of the color-dependent limb darkening of the star but potentially due as well to the effect of color-dependent opacity in the planetary atmosphere. We model the light curves and present refined values for the transit timing and orbital period, useful for planning future observations of the planetary transit. We also derive significantly improved measurements of the planetary radius, Rp = 1.55 ± 0.10 RJup, stellar radius, Rs = 1.27 ± 0.05 R⊙, and orbital inclination, i = 85°.9 ± 0°.5. The derived planetary radius favors evolutionary models in which the planet has a low albedo.",

keywords = "Binaries: eclipsing, Planetary systems, Stars: individual (HD 209458), Techniques: photometric",

author = "Jha Saurabh and David Charbonneau and Garnavich, {Peter M.} and Sullivan, {Denis J.} and Tiri Sullivan and Brown, {Timothy M.} and Tonry, {John L.}",

year = "2000",

month = sep,

day = "1",

language = "English (US)",

volume = "540",

pages = "L45--L48",

journal = "Astrophysical Journal",

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TY - JOUR

T1 - Multicolor observations of a planetary transit of HD 209458

AU - Saurabh, Jha

AU - Charbonneau, David

AU - Garnavich, Peter M.

AU - Sullivan, Denis J.

AU - Sullivan, Tiri

AU - Brown, Timothy M.

AU - Tonry, John L.

PY - 2000/9/1

Y1 - 2000/9/1

N2 - We present BVRIZ photometric observations of HD 209458 during the transit by its planetary companion on UT 1999 November 15 with the University of Hawaii 0.6 and 2.2 m telescopes and the High Altitude Observatory STARE telescope. The detailed shape of the transit curve is predicted to vary with color primarily as a result of the color-dependent limb darkening of the star but potentially due as well to the effect of color-dependent opacity in the planetary atmosphere. We model the light curves and present refined values for the transit timing and orbital period, useful for planning future observations of the planetary transit. We also derive significantly improved measurements of the planetary radius, Rp = 1.55 ± 0.10 RJup, stellar radius, Rs = 1.27 ± 0.05 R⊙, and orbital inclination, i = 85°.9 ± 0°.5. The derived planetary radius favors evolutionary models in which the planet has a low albedo.

AB - We present BVRIZ photometric observations of HD 209458 during the transit by its planetary companion on UT 1999 November 15 with the University of Hawaii 0.6 and 2.2 m telescopes and the High Altitude Observatory STARE telescope. The detailed shape of the transit curve is predicted to vary with color primarily as a result of the color-dependent limb darkening of the star but potentially due as well to the effect of color-dependent opacity in the planetary atmosphere. We model the light curves and present refined values for the transit timing and orbital period, useful for planning future observations of the planetary transit. We also derive significantly improved measurements of the planetary radius, Rp = 1.55 ± 0.10 RJup, stellar radius, Rs = 1.27 ± 0.05 R⊙, and orbital inclination, i = 85°.9 ± 0°.5. The derived planetary radius favors evolutionary models in which the planet has a low albedo.

KW - Binaries: eclipsing

KW - Planetary systems

KW - Stars: individual (HD 209458)

KW - Techniques: photometric

UR - http://www.scopus.com/inward/record.url?scp=5244333739&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=5244333739&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:5244333739

SN - 0004-637X

VL - 540

SP - L45-L48

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1 PART 2

ER -

Multicolor observations of a planetary transit of HD 209458

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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