The rotation period of the planet-hosting star HD 189733

Gregory W. Henry; Joshua N. Winn

doi:10.1088/0004-6256/135/1/68

The rotation period of the planet-hosting star HD 189733

Gregory W. Henry, Joshua N. Winn

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

75 Scopus citations

Abstract

We present synoptic optical photometry of HD 189733, the chromospherically active parent star of one of the most intensively studied exoplanets. We have significantly extended the timespan of our previously reported observations and refined the estimate of the stellar rotation period by more than an order of magnitude: P = 11.953 ± 0.009 days. We derive a lower limit on the inclination of the stellar rotation axis of 54° (with 95% confidence), corroborating earlier evidence that the stellar spin axis and planetary orbital axis are well aligned.

Original language	English (US)
Pages (from-to)	68-71
Number of pages	4
Journal	Astronomical Journal
Volume	135
Issue number	1
DOIs	https://doi.org/10.1088/0004-6256/135/1/68
State	Published - Jan 1 2008
Externally published	Yes

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

Planetary systems
Planetary systems: formation
Stars: individual (HD 189733)
Stars: rotation

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10.1088/0004-6256/135/1/68

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title = "The rotation period of the planet-hosting star HD 189733",

abstract = "We present synoptic optical photometry of HD 189733, the chromospherically active parent star of one of the most intensively studied exoplanets. We have significantly extended the timespan of our previously reported observations and refined the estimate of the stellar rotation period by more than an order of magnitude: P = 11.953 ± 0.009 days. We derive a lower limit on the inclination of the stellar rotation axis of 54° (with 95% confidence), corroborating earlier evidence that the stellar spin axis and planetary orbital axis are well aligned.",

keywords = "Planetary systems, Planetary systems: formation, Stars: individual (HD 189733), Stars: rotation",

author = "Henry, {Gregory W.} and Winn, {Joshua N.}",

year = "2008",

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doi = "10.1088/0004-6256/135/1/68",

language = "English (US)",

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T1 - The rotation period of the planet-hosting star HD 189733

AU - Henry, Gregory W.

AU - Winn, Joshua N.

PY - 2008/1/1

Y1 - 2008/1/1

N2 - We present synoptic optical photometry of HD 189733, the chromospherically active parent star of one of the most intensively studied exoplanets. We have significantly extended the timespan of our previously reported observations and refined the estimate of the stellar rotation period by more than an order of magnitude: P = 11.953 ± 0.009 days. We derive a lower limit on the inclination of the stellar rotation axis of 54° (with 95% confidence), corroborating earlier evidence that the stellar spin axis and planetary orbital axis are well aligned.

AB - We present synoptic optical photometry of HD 189733, the chromospherically active parent star of one of the most intensively studied exoplanets. We have significantly extended the timespan of our previously reported observations and refined the estimate of the stellar rotation period by more than an order of magnitude: P = 11.953 ± 0.009 days. We derive a lower limit on the inclination of the stellar rotation axis of 54° (with 95% confidence), corroborating earlier evidence that the stellar spin axis and planetary orbital axis are well aligned.

KW - Planetary systems

KW - Planetary systems: formation

KW - Stars: individual (HD 189733)

KW - Stars: rotation

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JO - Astronomical Journal

JF - Astronomical Journal

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The rotation period of the planet-hosting star HD 189733

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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