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

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

Research output: Contribution to journalArticle

53 Citations (Scopus)

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 languageEnglish
Pages (from-to)1707-1712
Number of pages6
JournalAstronomical Journal
Volume134
Issue number4
DOIs
Publication statusPublished - 2007

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extrasolar planets
transit
light curve
planets
planet
Jupiter (planet)
Jupiter
photometry
gravity
gravitation
stars
estimates
project
parameter

Keywords

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

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Winn, J. N., Holman, M. J., Bakos, G. Á., Pál, A., Johnson, J. A., Williams, P. K. G., ... Gillon, M. (2007). The transit light curve project. VII. The not-so-bloated exoplanet hAT-P-1b. Astronomical Journal, 134(4), 1707-1712. https://doi.org/10.1086/521599

The transit light curve project. VII. The not-so-bloated exoplanet hAT-P-1b. / Winn, Joshua N.; Holman, Matthew J.; Bakos, Gaspar Á; Pál, A.; Johnson, John Asher; Williams, Peter K G; Avi, Shporer; Mazeh, Tsevi; Fernandez, José; Latham, David W.; Gillon, Michael.

In: Astronomical Journal, Vol. 134, No. 4, 2007, p. 1707-1712.

Research output: Contribution to journalArticle

Winn, JN, Holman, MJ, Bakos, GÁ, Pál, A, Johnson, JA, Williams, PKG, Avi, S, Mazeh, T, Fernandez, J, Latham, DW & Gillon, M 2007, 'The transit light curve project. VII. The not-so-bloated exoplanet hAT-P-1b', Astronomical Journal, vol. 134, no. 4, pp. 1707-1712. https://doi.org/10.1086/521599
Winn JN, Holman MJ, Bakos GÁ, Pál A, Johnson JA, Williams PKG et al. The transit light curve project. VII. The not-so-bloated exoplanet hAT-P-1b. Astronomical Journal. 2007;134(4):1707-1712. https://doi.org/10.1086/521599
Winn, Joshua N. ; Holman, Matthew J. ; Bakos, Gaspar Á ; Pál, A. ; Johnson, John Asher ; Williams, Peter K G ; Avi, Shporer ; Mazeh, Tsevi ; Fernandez, José ; Latham, David W. ; Gillon, Michael. / The transit light curve project. VII. The not-so-bloated exoplanet hAT-P-1b. In: Astronomical Journal. 2007 ; Vol. 134, No. 4. pp. 1707-1712.
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