Hat-P-9b: A low-density planet transiting a moderately faint F star

Avi Shporer; Gáspár Á Bakos; Francois Bouchy; Frederic Pont; Géza Kovács; Dave W. Latham; Brigitta Sipöcz; Guillermo Torres; Tsevi Mazeh; Gilbert A. Esquerdo; András Pál; Robert W. Noyes; Dimitar D. Sasselov; József Lázár; István Papp; Pál Sári; Gábor Kovács

doi:10.1088/0004-637X/690/2/1393

Hat-P-9b: A low-density planet transiting a moderately faint F star

Avi Shporer, Gáspár Á Bakos, Francois Bouchy, Frederic Pont, Géza Kovács, Dave W. Latham, Brigitta Sipöcz, Guillermo Torres, Tsevi Mazeh, Gilbert A. Esquerdo, András Pál, Robert W. Noyes, Dimitar D. Sasselov, József Lázár, István Papp, Pál Sári, Gábor Kovács

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45 Scopus citations

Abstract

We report the discovery of a planet transiting a moderately faint (V = 12.3 mag) late F star, with an orbital period of 3.92289 ± 0.00004 days. From the transit light curve and radial velocity measurements, we determine that the radius of the planet is R_p = 1.40 ± 0.06 R _Jup and that the mass is M_p = 0.78 ± 0.09 M _Jup. The density of the new planet, ρ_p = 0.35 ± 0.06 g cm ^-3, fits to the low-density tail of the currently known transiting planets. We find that the center of transit is at T _c = 2454417.9077 ± 0.0003 (HJD), and the total transit duration is 0.143 ± 0.004 days. The host star has M _⊙ = 1.28 ± 0.13 M _⊙ and R _⊙ = 1.32 ± 0.07 R _⊙.

Original language	English (US)
Pages (from-to)	1393-1400
Number of pages	8
Journal	Astrophysical Journal
Volume	690
Issue number	2
DOIs	https://doi.org/10.1088/0004-637X/690/2/1393
State	Published - 2009
Externally published	Yes

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

Planetary systems
Stars: individual (GSC 02463 - 00281, HAT-P-9)

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10.1088/0004-637X/690/2/1393

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Shporer, A., Bakos, G. Á., Bouchy, F., Pont, F., Kovács, G., Latham, D. W., Sipöcz, B., Torres, G., Mazeh, T., Esquerdo, G. A., Pál, A., Noyes, R. W., Sasselov, D. D., Lázár, J., Papp, I., Sári, P., & Kovács, G. (2009). Hat-P-9b: A low-density planet transiting a moderately faint F star. Astrophysical Journal, 690(2), 1393-1400. https://doi.org/10.1088/0004-637X/690/2/1393

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abstract = "We report the discovery of a planet transiting a moderately faint (V = 12.3 mag) late F star, with an orbital period of 3.92289 ± 0.00004 days. From the transit light curve and radial velocity measurements, we determine that the radius of the planet is Rp = 1.40 ± 0.06 R Jup and that the mass is Mp = 0.78 ± 0.09 M Jup. The density of the new planet, ρp = 0.35 ± 0.06 g cm -3, fits to the low-density tail of the currently known transiting planets. We find that the center of transit is at T c = 2454417.9077 ± 0.0003 (HJD), and the total transit duration is 0.143 ± 0.004 days. The host star has M ⊙ = 1.28 ± 0.13 M ⊙ and R ⊙ = 1.32 ± 0.07 R ⊙.",

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AU - Shporer, Avi

AU - Bakos, Gáspár Á

AU - Bouchy, Francois

AU - Pont, Frederic

AU - Kovács, Géza

AU - Latham, Dave W.

AU - Sipöcz, Brigitta

AU - Torres, Guillermo

AU - Mazeh, Tsevi

AU - Esquerdo, Gilbert A.

AU - Pál, András

AU - Noyes, Robert W.

AU - Sasselov, Dimitar D.

AU - Lázár, József

AU - Papp, István

AU - Sári, Pál

AU - Kovács, Gábor

PY - 2009

Y1 - 2009

N2 - We report the discovery of a planet transiting a moderately faint (V = 12.3 mag) late F star, with an orbital period of 3.92289 ± 0.00004 days. From the transit light curve and radial velocity measurements, we determine that the radius of the planet is Rp = 1.40 ± 0.06 R Jup and that the mass is Mp = 0.78 ± 0.09 M Jup. The density of the new planet, ρp = 0.35 ± 0.06 g cm -3, fits to the low-density tail of the currently known transiting planets. We find that the center of transit is at T c = 2454417.9077 ± 0.0003 (HJD), and the total transit duration is 0.143 ± 0.004 days. The host star has M ⊙ = 1.28 ± 0.13 M ⊙ and R ⊙ = 1.32 ± 0.07 R ⊙.

AB - We report the discovery of a planet transiting a moderately faint (V = 12.3 mag) late F star, with an orbital period of 3.92289 ± 0.00004 days. From the transit light curve and radial velocity measurements, we determine that the radius of the planet is Rp = 1.40 ± 0.06 R Jup and that the mass is Mp = 0.78 ± 0.09 M Jup. The density of the new planet, ρp = 0.35 ± 0.06 g cm -3, fits to the low-density tail of the currently known transiting planets. We find that the center of transit is at T c = 2454417.9077 ± 0.0003 (HJD), and the total transit duration is 0.143 ± 0.004 days. The host star has M ⊙ = 1.28 ± 0.13 M ⊙ and R ⊙ = 1.32 ± 0.07 R ⊙.

KW - Planetary systems

KW - Stars: individual (GSC 02463 - 00281, HAT-P-9)

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VL - 690

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JO - Astrophysical Journal

JF - Astrophysical Journal

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ER -

Hat-P-9b: A low-density planet transiting a moderately faint F star

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