HAT-P-15b: A 10.9 day extrasolar planet transiting a solar-type star

G. Kovács; G. Á Bakos; J. D. Hartman; G. Torres; R. W. Noyes; D. W. Latham; A. W. Howard; D. A. Fischer; J. A. Johnson; G. W. Marcy; H. Isaacson; D. D. Sasselov; R. P. Stefanik; G. A. Esquerdo; J. M. Fernandez; B. Béky J. Lázár; I. Papp; P. Sári

doi:10.1088/0004-637X/724/2/866

HAT-P-15b: A 10.9 day extrasolar planet transiting a solar-type star

G. Kovács, G. Á Bakos, J. D. Hartman, G. Torres, R. W. Noyes, D. W. Latham, A. W. Howard, D. A. Fischer, J. A. Johnson, G. W. Marcy, H. Isaacson, D. D. Sasselov, R. P. Stefanik, G. A. Esquerdo, J. M. Fernandez, B. Béky J. Lázár, I. Papp, P. Sári

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Abstract

We report the discovery of HAT-P-15b, a transiting extrasolar planet in the "period valley," a relatively sparsely populated period regime of the known extrasolar planets. The host star, GSC 2883-01687, is a G5 dwarf with V = 12.16. It has amass of 1.01 ±0.04 M_ȯ, radius of 1.08 ±0.04 R_ȯ, effective temperature 5568 ± 90 K, and metallicity [Fe/H] = +0.22 ± 0.08. The planetary companion orbits the star with a period P = 10.863502 ± 0.000027 days, transit epoch T _c = 2454638.56019 ± 0.00048 (BJD), and transit duration 0.2285 ± 0.0015 days. It has a mass of 1.946 ± 0.066 MJ and radius of 1.072 ± 0.043 R_J yielding a mean density of 1.96 ± 0.22 gcm_-3. At an age of 6.8^+2.5_-1.6 Gyr, the planet is H/He-dominated and theoretical models require about 2% (10 M _⊕) worth of heavy elements to reproduce its measured radius. With an estimated equilibrium temperature of ∼820 K during transit, and ∼1000 K at occultation, HAT-P-15b is a potential candidate to study moderately cool planetary atmospheres by transmission and occultation spectroscopy.

Original language	English (US)
Pages (from-to)	866-877
Number of pages	12
Journal	Astrophysical Journal
Volume	724
Issue number	2
DOIs	https://doi.org/10.1088/0004-637X/724/2/866
State	Published - Dec 1 2010
Externally published	Yes

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

Planetary systems
Stars: individual (HAT-P-15)
Techniques: photometric
Techniques: spectroscopic

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10.1088/0004-637X/724/2/866

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Kovács, G., Bakos, G. Á., Hartman, J. D., Torres, G., Noyes, R. W., Latham, D. W., Howard, A. W., Fischer, D. A., Johnson, J. A., Marcy, G. W., Isaacson, H., Sasselov, D. D., Stefanik, R. P., Esquerdo, G. A., Fernandez, J. M., Lázár, B. B. J., Papp, I., & Sári, P. (2010). HAT-P-15b: A 10.9 day extrasolar planet transiting a solar-type star. Astrophysical Journal, 724(2), 866-877. https://doi.org/10.1088/0004-637X/724/2/866

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title = "HAT-P-15b: A 10.9 day extrasolar planet transiting a solar-type star",

abstract = "We report the discovery of HAT-P-15b, a transiting extrasolar planet in the {"}period valley,{"} a relatively sparsely populated period regime of the known extrasolar planets. The host star, GSC 2883-01687, is a G5 dwarf with V = 12.16. It has amass of 1.01 ±0.04 Mȯ, radius of 1.08 ±0.04 Rȯ, effective temperature 5568 ± 90 K, and metallicity [Fe/H] = +0.22 ± 0.08. The planetary companion orbits the star with a period P = 10.863502 ± 0.000027 days, transit epoch T c = 2454638.56019 ± 0.00048 (BJD), and transit duration 0.2285 ± 0.0015 days. It has a mass of 1.946 ± 0.066 MJ and radius of 1.072 ± 0.043 RJ yielding a mean density of 1.96 ± 0.22 gcm-3. At an age of 6.8+2.5-1.6 Gyr, the planet is H/He-dominated and theoretical models require about 2% (10 M ⊕) worth of heavy elements to reproduce its measured radius. With an estimated equilibrium temperature of ∼820 K during transit, and ∼1000 K at occultation, HAT-P-15b is a potential candidate to study moderately cool planetary atmospheres by transmission and occultation spectroscopy.",

keywords = "Planetary systems, Stars: individual (HAT-P-15), Techniques: photometric, Techniques: spectroscopic",

author = "G. Kov{\'a}cs and Bakos, {G. {\'A}} and Hartman, {J. D.} and G. Torres and Noyes, {R. W.} and Latham, {D. W.} and Howard, {A. W.} and Fischer, {D. A.} and Johnson, {J. A.} and Marcy, {G. W.} and H. Isaacson and Sasselov, {D. D.} and Stefanik, {R. P.} and Esquerdo, {G. A.} and Fernandez, {J. M.} and L{\'a}z{\'a}r, {B. B{\'e}ky J.} and I. Papp and P. S{\'a}ri",

year = "2010",

month = dec,

day = "1",

doi = "10.1088/0004-637X/724/2/866",

language = "English (US)",

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Kovács, G, Bakos, GÁ , Hartman, JD, Torres, G, Noyes, RW, Latham, DW, Howard, AW, Fischer, DA, Johnson, JA, Marcy, GW, Isaacson, H, Sasselov, DD, Stefanik, RP, Esquerdo, GA, Fernandez, JM, Lázár, BBJ, Papp, I & Sári, P 2010, 'HAT-P-15b: A 10.9 day extrasolar planet transiting a solar-type star', Astrophysical Journal, vol. 724, no. 2, pp. 866-877. https://doi.org/10.1088/0004-637X/724/2/866

TY - JOUR

T1 - HAT-P-15b

T2 - A 10.9 day extrasolar planet transiting a solar-type star

AU - Kovács, G.

AU - Bakos, G. Á

AU - Hartman, J. D.

AU - Torres, G.

AU - Noyes, R. W.

AU - Latham, D. W.

AU - Howard, A. W.

AU - Fischer, D. A.

AU - Johnson, J. A.

AU - Marcy, G. W.

AU - Isaacson, H.

AU - Sasselov, D. D.

AU - Stefanik, R. P.

AU - Esquerdo, G. A.

AU - Fernandez, J. M.

AU - Lázár, B. Béky J.

AU - Papp, I.

AU - Sári, P.

PY - 2010/12/1

Y1 - 2010/12/1

N2 - We report the discovery of HAT-P-15b, a transiting extrasolar planet in the "period valley," a relatively sparsely populated period regime of the known extrasolar planets. The host star, GSC 2883-01687, is a G5 dwarf with V = 12.16. It has amass of 1.01 ±0.04 Mȯ, radius of 1.08 ±0.04 Rȯ, effective temperature 5568 ± 90 K, and metallicity [Fe/H] = +0.22 ± 0.08. The planetary companion orbits the star with a period P = 10.863502 ± 0.000027 days, transit epoch T c = 2454638.56019 ± 0.00048 (BJD), and transit duration 0.2285 ± 0.0015 days. It has a mass of 1.946 ± 0.066 MJ and radius of 1.072 ± 0.043 RJ yielding a mean density of 1.96 ± 0.22 gcm-3. At an age of 6.8+2.5-1.6 Gyr, the planet is H/He-dominated and theoretical models require about 2% (10 M ⊕) worth of heavy elements to reproduce its measured radius. With an estimated equilibrium temperature of ∼820 K during transit, and ∼1000 K at occultation, HAT-P-15b is a potential candidate to study moderately cool planetary atmospheres by transmission and occultation spectroscopy.

AB - We report the discovery of HAT-P-15b, a transiting extrasolar planet in the "period valley," a relatively sparsely populated period regime of the known extrasolar planets. The host star, GSC 2883-01687, is a G5 dwarf with V = 12.16. It has amass of 1.01 ±0.04 Mȯ, radius of 1.08 ±0.04 Rȯ, effective temperature 5568 ± 90 K, and metallicity [Fe/H] = +0.22 ± 0.08. The planetary companion orbits the star with a period P = 10.863502 ± 0.000027 days, transit epoch T c = 2454638.56019 ± 0.00048 (BJD), and transit duration 0.2285 ± 0.0015 days. It has a mass of 1.946 ± 0.066 MJ and radius of 1.072 ± 0.043 RJ yielding a mean density of 1.96 ± 0.22 gcm-3. At an age of 6.8+2.5-1.6 Gyr, the planet is H/He-dominated and theoretical models require about 2% (10 M ⊕) worth of heavy elements to reproduce its measured radius. With an estimated equilibrium temperature of ∼820 K during transit, and ∼1000 K at occultation, HAT-P-15b is a potential candidate to study moderately cool planetary atmospheres by transmission and occultation spectroscopy.

KW - Planetary systems

KW - Stars: individual (HAT-P-15)

KW - Techniques: photometric

KW - Techniques: spectroscopic

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U2 - 10.1088/0004-637X/724/2/866

DO - 10.1088/0004-637X/724/2/866

M3 - Article

AN - SCOPUS:78650128491

SN - 0004-637X

VL - 724

SP - 866

EP - 877

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

ER -

HAT-P-15b: A 10.9 day extrasolar planet transiting a solar-type star

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