The transit light curve project. VII. The not-so-bloated exoplanet hAT-P-1b

Joshua N. Winn; Matthew J. Holman; Gaspar Á Bakos; András Pál; John Asher Johnson; Peter K.G. Williams; Shporer Avi; Tsevi Mazeh; José Fernandez; David W. Latham; Michael Gillon

doi:10.1086/521599

The transit light curve project. VII. The not-so-bloated exoplanet hAT-P-1b

Joshua N. Winn, Matthew J. Holman, Gaspar Á Bakos, András Pál, John Asher Johnson, Peter K.G. Williams, Shporer Avi, Tsevi Mazeh, José Fernandez, David W. Latham, Michael Gillon

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

69 Scopus citations

Abstract

We present photometry of the GO star HAT-P-I during six transits of its close-in giant planet, and we refine the estimates of the system parameters. Relative to Jupiter's properties, HAT-P-1b is 1.20 ±0.05 times larger, and its surface gravity is 2.7 ±0.2 times weaker. Although it remains the case that HAT-P-1b is among the least dense of the known sample of transiting exoplanets, its properties are in accord with previously published models of strongly irradiated, coreless, solar-composition giant planets. The times of the transits have a typical accuracy of 1 minute and do not depart significantly from a constant period.

Original language	English (US)
Pages (from-to)	1707-1712
Number of pages	6
Journal	Astronomical Journal
Volume	134
Issue number	4
DOIs	https://doi.org/10.1086/521599
State	Published - 2007
Externally published	Yes

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

Planetary systems
Stars: individual (HAT-P-1, ADS 16402B)

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10.1086/521599

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title = "The transit light curve project. VII. The not-so-bloated exoplanet hAT-P-1b",

abstract = "We present photometry of the GO star HAT-P-I during six transits of its close-in giant planet, and we refine the estimates of the system parameters. Relative to Jupiter's properties, HAT-P-1b is 1.20 ±0.05 times larger, and its surface gravity is 2.7 ±0.2 times weaker. Although it remains the case that HAT-P-1b is among the least dense of the known sample of transiting exoplanets, its properties are in accord with previously published models of strongly irradiated, coreless, solar-composition giant planets. The times of the transits have a typical accuracy of 1 minute and do not depart significantly from a constant period.",

keywords = "Planetary systems, Stars: individual (HAT-P-1, ADS 16402B)",

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year = "2007",

doi = "10.1086/521599",

language = "English (US)",

volume = "134",

pages = "1707--1712",

journal = "Astronomical Journal",

issn = "0004-6256",

publisher = "American Astronomical Society",

number = "4",

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TY - JOUR

T1 - The transit light curve project. VII. The not-so-bloated exoplanet hAT-P-1b

AU - Winn, Joshua N.

AU - Holman, Matthew J.

AU - Bakos, Gaspar Á

AU - Pál, András

AU - Johnson, John Asher

AU - Williams, Peter K.G.

AU - Avi, Shporer

AU - Mazeh, Tsevi

AU - Fernandez, José

AU - Latham, David W.

AU - Gillon, Michael

PY - 2007

Y1 - 2007

N2 - We present photometry of the GO star HAT-P-I during six transits of its close-in giant planet, and we refine the estimates of the system parameters. Relative to Jupiter's properties, HAT-P-1b is 1.20 ±0.05 times larger, and its surface gravity is 2.7 ±0.2 times weaker. Although it remains the case that HAT-P-1b is among the least dense of the known sample of transiting exoplanets, its properties are in accord with previously published models of strongly irradiated, coreless, solar-composition giant planets. The times of the transits have a typical accuracy of 1 minute and do not depart significantly from a constant period.

AB - We present photometry of the GO star HAT-P-I during six transits of its close-in giant planet, and we refine the estimates of the system parameters. Relative to Jupiter's properties, HAT-P-1b is 1.20 ±0.05 times larger, and its surface gravity is 2.7 ±0.2 times weaker. Although it remains the case that HAT-P-1b is among the least dense of the known sample of transiting exoplanets, its properties are in accord with previously published models of strongly irradiated, coreless, solar-composition giant planets. The times of the transits have a typical accuracy of 1 minute and do not depart significantly from a constant period.

KW - Planetary systems

KW - Stars: individual (HAT-P-1, ADS 16402B)

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JF - Astronomical Journal

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The transit light curve project. VII. The not-so-bloated exoplanet hAT-P-1b

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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