HAT-P-1b: A large-radius, low-density exoplanet transiting one member of a stellar binary

G. Á Bakus; R. W. Noyes; G. Kovács; D. W. Latham; D. D. Sasselov; G. Torres; D. A. Fischer; R. P. Stefanik; B. Sato; J. A. Johnson; A. Pál; G. W. Marcy; R. P. Butler; G. A. Esquerdo; K. Z. Stanek; J. Láaár; I. Papp; P. Sári; B. Sipöcz

doi:10.1086/509874

HAT-P-1b: A large-radius, low-density exoplanet transiting one member of a stellar binary

G. Á Bakus
, R. W. Noyes
, G. Kovács
, D. W. Latham
, D. D. Sasselov
, G. Torres
, D. A. Fischer
, R. P. Stefanik
, B. Sato
, J. A. Johnson
, A. Pál
, G. W. Marcy
, R. P. Butler
, G. A. Esquerdo
, K. Z. Stanek
, J. Láaár
, I. Papp
, P. Sári
, B. Sipöcz

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

171 Scopus citations

Abstract

Using small automated telescopes in Arizona and Hawaii, the HATNet project has detected an object transiting one member of the double star system ADS 16402. This system is a pair of GO main-sequence stars with age about 3 Gyr at a distance of ∼ 139 pc and projected separation of ∼ 1550 AU. The transit signal has a period of 4.46529 days and depth of 0.015 mag. From follow-up photometry and spectroscopy, we find that the object is a "hot Jupiter" planet with mass about 0.53M_J and radius ∼1.36R_J traveling in an orbit with semimajor axis 0.055 AU and inclination about 85.9°, thus transiting the star at impact parameter 0.74 of the stellar radius. Based on a data set spanning 3 yr, ephemerides for the transit center are T_C = 2453984.397 + N_tr × 4.46529. The planet, designated HAT-P-1b, appears to be at least as large in radius, and smaller in mean density, than any previously known planet.

Original language	English (US)
Pages (from-to)	552-559
Number of pages	8
Journal	Astrophysical Journal
Volume	656
Issue number	1 I
DOIs	https://doi.org/10.1086/509874
State	Published - Feb 10 2007
Externally published	Yes

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

Binaries: general
Planetary systems
Stars: individual (ADS 16402AB)

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10.1086/509874

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Bakus, G. Á., Noyes, R. W., Kovács, G., Latham, D. W., Sasselov, D. D., Torres, G., Fischer, D. A., Stefanik, R. P., Sato, B., Johnson, J. A., Pál, A., Marcy, G. W., Butler, R. P., Esquerdo, G. A., Stanek, K. Z., Láaár, J., Papp, I., Sári, P., & Sipöcz, B. (2007). HAT-P-1b: A large-radius, low-density exoplanet transiting one member of a stellar binary. Astrophysical Journal, 656(1 I), 552-559. https://doi.org/10.1086/509874

@article{afb827343f3844d2b57e21ea6afcb310,

title = "HAT-P-1b: A large-radius, low-density exoplanet transiting one member of a stellar binary",

abstract = "Using small automated telescopes in Arizona and Hawaii, the HATNet project has detected an object transiting one member of the double star system ADS 16402. This system is a pair of GO main-sequence stars with age about 3 Gyr at a distance of ∼ 139 pc and projected separation of ∼ 1550 AU. The transit signal has a period of 4.46529 days and depth of 0.015 mag. From follow-up photometry and spectroscopy, we find that the object is a {"}hot Jupiter{"} planet with mass about 0.53MJ and radius ∼1.36RJ traveling in an orbit with semimajor axis 0.055 AU and inclination about 85.9°, thus transiting the star at impact parameter 0.74 of the stellar radius. Based on a data set spanning 3 yr, ephemerides for the transit center are TC = 2453984.397 + Ntr × 4.46529. The planet, designated HAT-P-1b, appears to be at least as large in radius, and smaller in mean density, than any previously known planet.",

keywords = "Binaries: general, Planetary systems, Stars: individual (ADS 16402AB)",

author = "Bakus, \{G. {\'A}\} and Noyes, \{R. W.\} and G. Kov{\'a}cs and Latham, \{D. W.\} and Sasselov, \{D. D.\} and G. Torres and Fischer, \{D. A.\} and Stefanik, \{R. P.\} and B. Sato and Johnson, \{J. A.\} and A. P{\'a}l and Marcy, \{G. W.\} and Butler, \{R. P.\} and Esquerdo, \{G. A.\} and Stanek, \{K. Z.\} and J. L{\'a}a{\'a}r and I. Papp and P. S{\'a}ri and B. Sip{\"o}cz",

year = "2007",

month = feb,

day = "10",

doi = "10.1086/509874",

language = "English (US)",

volume = "656",

pages = "552--559",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "1 I",

}

Bakus, GÁ, Noyes, RW, Kovács, G, Latham, DW, Sasselov, DD, Torres, G, Fischer, DA, Stefanik, RP, Sato, B, Johnson, JA, Pál, A, Marcy, GW, Butler, RP, Esquerdo, GA, Stanek, KZ, Láaár, J, Papp, I, Sári, P & Sipöcz, B 2007, 'HAT-P-1b: A large-radius, low-density exoplanet transiting one member of a stellar binary', Astrophysical Journal, vol. 656, no. 1 I, pp. 552-559. https://doi.org/10.1086/509874

TY - JOUR

T1 - HAT-P-1b

T2 - A large-radius, low-density exoplanet transiting one member of a stellar binary

AU - Bakus, G. Á

AU - Noyes, R. W.

AU - Kovács, G.

AU - Latham, D. W.

AU - Sasselov, D. D.

AU - Torres, G.

AU - Fischer, D. A.

AU - Stefanik, R. P.

AU - Sato, B.

AU - Johnson, J. A.

AU - Pál, A.

AU - Marcy, G. W.

AU - Butler, R. P.

AU - Esquerdo, G. A.

AU - Stanek, K. Z.

AU - Láaár, J.

AU - Papp, I.

AU - Sári, P.

AU - Sipöcz, B.

PY - 2007/2/10

Y1 - 2007/2/10

N2 - Using small automated telescopes in Arizona and Hawaii, the HATNet project has detected an object transiting one member of the double star system ADS 16402. This system is a pair of GO main-sequence stars with age about 3 Gyr at a distance of ∼ 139 pc and projected separation of ∼ 1550 AU. The transit signal has a period of 4.46529 days and depth of 0.015 mag. From follow-up photometry and spectroscopy, we find that the object is a "hot Jupiter" planet with mass about 0.53MJ and radius ∼1.36RJ traveling in an orbit with semimajor axis 0.055 AU and inclination about 85.9°, thus transiting the star at impact parameter 0.74 of the stellar radius. Based on a data set spanning 3 yr, ephemerides for the transit center are TC = 2453984.397 + Ntr × 4.46529. The planet, designated HAT-P-1b, appears to be at least as large in radius, and smaller in mean density, than any previously known planet.

AB - Using small automated telescopes in Arizona and Hawaii, the HATNet project has detected an object transiting one member of the double star system ADS 16402. This system is a pair of GO main-sequence stars with age about 3 Gyr at a distance of ∼ 139 pc and projected separation of ∼ 1550 AU. The transit signal has a period of 4.46529 days and depth of 0.015 mag. From follow-up photometry and spectroscopy, we find that the object is a "hot Jupiter" planet with mass about 0.53MJ and radius ∼1.36RJ traveling in an orbit with semimajor axis 0.055 AU and inclination about 85.9°, thus transiting the star at impact parameter 0.74 of the stellar radius. Based on a data set spanning 3 yr, ephemerides for the transit center are TC = 2453984.397 + Ntr × 4.46529. The planet, designated HAT-P-1b, appears to be at least as large in radius, and smaller in mean density, than any previously known planet.

KW - Binaries: general

KW - Planetary systems

KW - Stars: individual (ADS 16402AB)

UR - https://www.scopus.com/pages/publications/33847385891

UR - https://www.scopus.com/pages/publications/33847385891#tab=citedBy

U2 - 10.1086/509874

DO - 10.1086/509874

M3 - Article

AN - SCOPUS:33847385891

SN - 0004-637X

VL - 656

SP - 552

EP - 559

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1 I

ER -

HAT-P-1b: A large-radius, low-density exoplanet transiting one member of a stellar binary

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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