HAT-P-3b: A heavy-element-rich planet transiting A K dwarf star

G. Torres; G. A. Bakos; G. Kovács; D. W. Latham; J. M. Fernández; R. W. Noyes; G. A. Esquerdo; A. Sozzetti; D. A. Fischer; R. P. Butler; G. W. Marcy; R. P. Stefanik; D. D. Sasselov; J. Lázár; I. Papp; P. Sári

doi:10.1086/521792

HAT-P-3b: A heavy-element-rich planet transiting A K dwarf star

G. Torres, G. A. Bakos, G. Kovács, D. W. Latham, J. M. Fernández, R. W. Noyes, G. A. Esquerdo, A. Sozzetti, D. A. Fischer, R. P. Butler, G. W. Marcy, R. P. Stefanik, D. D. Sasselov, J. Lázár, I. Papp, P. Sári

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Abstract

We report the discovery of a Jupiter-size planet transiting a relatively bright (V = 11.56) and metal-rich early K dwarf star with a period of ∼2.9 days. On the basis of follow-up photometry and spectroscopy we determine the mass and radius of the planet, HAT-P-3b, to be M_p =0.599 ± 0.026 M_Jup and R_p = 0.890 ± 0.046 R_Jup. The relatively small size of the object for its mass implies the presence of about 75 M_⊕ worth of heavy elements (∼1/3 of the total mass) based on current theories of irradiated extrasolar giant planets, similar to the mass of the core inferred for the transiting planet HD 149026b. The bulk density of HAT-P-3b is found to be ρ_ρ = 1.06 ± 0.17 g cm^-3, and the planet orbits the star at a distance of 0.03894 AU. Ephemerides for the transit centers are T_c = 2,454,218.7594 ± 0.0029 +N × (2.899703 ± 0.000054) (HJD).

Original language	English (US)
Pages (from-to)	L121-L124
Journal	Astrophysical Journal
Volume	666
Issue number	2 PART 2
DOIs	https://doi.org/10.1086/521792
State	Published - 2007
Externally published	Yes

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

Binaries: spectroscopic
Planetary systems
Stars: fundamental parameters
Stars: individual (HAT-P-3)
Techniques: spectroscopic

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10.1086/521792

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Torres, G., Bakos, G. A., Kovács, G., Latham, D. W., Fernández, J. M., Noyes, R. W., Esquerdo, G. A., Sozzetti, A., Fischer, D. A., Butler, R. P., Marcy, G. W., Stefanik, R. P., Sasselov, D. D., Lázár, J., Papp, I., & Sári, P. (2007). HAT-P-3b: A heavy-element-rich planet transiting A K dwarf star. Astrophysical Journal, 666(2 PART 2), L121-L124. https://doi.org/10.1086/521792

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title = "HAT-P-3b: A heavy-element-rich planet transiting A K dwarf star",

abstract = "We report the discovery of a Jupiter-size planet transiting a relatively bright (V = 11.56) and metal-rich early K dwarf star with a period of ∼2.9 days. On the basis of follow-up photometry and spectroscopy we determine the mass and radius of the planet, HAT-P-3b, to be Mp =0.599 ± 0.026 MJup and Rp = 0.890 ± 0.046 RJup. The relatively small size of the object for its mass implies the presence of about 75 M⊕ worth of heavy elements (∼1/3 of the total mass) based on current theories of irradiated extrasolar giant planets, similar to the mass of the core inferred for the transiting planet HD 149026b. The bulk density of HAT-P-3b is found to be ρρ = 1.06 ± 0.17 g cm-3, and the planet orbits the star at a distance of 0.03894 AU. Ephemerides for the transit centers are Tc = 2,454,218.7594 ± 0.0029 +N × (2.899703 ± 0.000054) (HJD).",

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author = "G. Torres and Bakos, {G. A.} and G. Kov{\'a}cs and Latham, {D. W.} and Fern{\'a}ndez, {J. M.} and Noyes, {R. W.} and Esquerdo, {G. A.} and A. Sozzetti and Fischer, {D. A.} and Butler, {R. P.} and Marcy, {G. W.} and Stefanik, {R. P.} and Sasselov, {D. D.} and J. L{\'a}z{\'a}r and I. Papp and P. S{\'a}ri",

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doi = "10.1086/521792",

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TY - JOUR

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T2 - A heavy-element-rich planet transiting A K dwarf star

AU - Torres, G.

AU - Bakos, G. A.

AU - Kovács, G.

AU - Latham, D. W.

AU - Fernández, J. M.

AU - Noyes, R. W.

AU - Esquerdo, G. A.

AU - Sozzetti, A.

AU - Fischer, D. A.

AU - Butler, R. P.

AU - Marcy, G. W.

AU - Stefanik, R. P.

AU - Sasselov, D. D.

AU - Lázár, J.

AU - Papp, I.

AU - Sári, P.

PY - 2007

Y1 - 2007

N2 - We report the discovery of a Jupiter-size planet transiting a relatively bright (V = 11.56) and metal-rich early K dwarf star with a period of ∼2.9 days. On the basis of follow-up photometry and spectroscopy we determine the mass and radius of the planet, HAT-P-3b, to be Mp =0.599 ± 0.026 MJup and Rp = 0.890 ± 0.046 RJup. The relatively small size of the object for its mass implies the presence of about 75 M⊕ worth of heavy elements (∼1/3 of the total mass) based on current theories of irradiated extrasolar giant planets, similar to the mass of the core inferred for the transiting planet HD 149026b. The bulk density of HAT-P-3b is found to be ρρ = 1.06 ± 0.17 g cm-3, and the planet orbits the star at a distance of 0.03894 AU. Ephemerides for the transit centers are Tc = 2,454,218.7594 ± 0.0029 +N × (2.899703 ± 0.000054) (HJD).

AB - We report the discovery of a Jupiter-size planet transiting a relatively bright (V = 11.56) and metal-rich early K dwarf star with a period of ∼2.9 days. On the basis of follow-up photometry and spectroscopy we determine the mass and radius of the planet, HAT-P-3b, to be Mp =0.599 ± 0.026 MJup and Rp = 0.890 ± 0.046 RJup. The relatively small size of the object for its mass implies the presence of about 75 M⊕ worth of heavy elements (∼1/3 of the total mass) based on current theories of irradiated extrasolar giant planets, similar to the mass of the core inferred for the transiting planet HD 149026b. The bulk density of HAT-P-3b is found to be ρρ = 1.06 ± 0.17 g cm-3, and the planet orbits the star at a distance of 0.03894 AU. Ephemerides for the transit centers are Tc = 2,454,218.7594 ± 0.0029 +N × (2.899703 ± 0.000054) (HJD).

KW - Binaries: spectroscopic

KW - Planetary systems

KW - Stars: fundamental parameters

KW - Stars: individual (HAT-P-3)

KW - Techniques: spectroscopic

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VL - 666

SP - L121-L124

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2 PART 2

ER -

HAT-P-3b: A heavy-element-rich planet transiting A K dwarf star

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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