HAT-P-4b

A metal-rich low-density transiting hot Jupiter

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

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

We describe the discovery of HAT-P-4b, a low-density extrasolar planet transiting BD +36 2593, a V = 11.2 mag slightly evolved metal-rich late F star. The planet's orbital period is 3.056536 ± 0.000057 days with a midtransit epoch of 2,454,245.8154 ± 0.0003 (HJD). Based on high-precision photometric and spectroscopic data, and by using transit light curve modeling, spectrum analysis, and evolutionary models, we derive the following planet parameters: Mp = 0.68 ± 0.04 MRJ, R p = 1.27 ± 0.05 RJ ρp = 0.41 ± 0.06 g cm-3, and a = 0.0446 ± 0.0012 AU. Because of its relatively large radius, together with its assumed high metallicity (that of its parent star), this planet adds to the theoretical challenges of explaining inflated extrasolar planets.

Original languageEnglish
JournalAstrophysical Journal
Volume670
Issue number1 PART 2
DOIs
Publication statusPublished - 2007

Fingerprint

Jupiter (planet)
Jupiter
planets
planet
extrasolar planets
metal
late stars
metals
F stars
transit
light curve
metallicity
spectrum analysis
time measurement
stars
orbitals
radii
modeling

Keywords

  • Planetary systems
  • Techniques: photometric
  • Techniques: spectroscopic

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics
  • Nuclear and High Energy Physics

Cite this

Kovács, G., Bakos, G. Á., Torres, G., Sozzetti, A., Latham, D. W., Noyes, R. W., ... Sári, P. (2007). HAT-P-4b: A metal-rich low-density transiting hot Jupiter. Astrophysical Journal, 670(1 PART 2). https://doi.org/10.1086/524058

HAT-P-4b : A metal-rich low-density transiting hot Jupiter. / Kovács, G.; Bakos, G. Á; Torres, G.; Sozzetti, A.; Latham, D. W.; Noyes, R. W.; Butler, R. P.; Marcy, G. W.; Fischer, D. A.; Fernández, J. M.; Esquerdo, G.; Sasselov, D. D.; Stefanik, R. P.; Pál, A.; Lázár, J.; Papp, I.; Sári, P.

In: Astrophysical Journal, Vol. 670, No. 1 PART 2, 2007.

Research output: Contribution to journalArticle

Kovács, G, Bakos, GÁ, Torres, G, Sozzetti, A, Latham, DW, Noyes, RW, Butler, RP, Marcy, GW, Fischer, DA, Fernández, JM, Esquerdo, G, Sasselov, DD, Stefanik, RP, Pál, A, Lázár, J, Papp, I & Sári, P 2007, 'HAT-P-4b: A metal-rich low-density transiting hot Jupiter', Astrophysical Journal, vol. 670, no. 1 PART 2. https://doi.org/10.1086/524058
Kovács G, Bakos GÁ, Torres G, Sozzetti A, Latham DW, Noyes RW et al. HAT-P-4b: A metal-rich low-density transiting hot Jupiter. Astrophysical Journal. 2007;670(1 PART 2). https://doi.org/10.1086/524058
Kovács, G. ; Bakos, G. Á ; Torres, G. ; Sozzetti, A. ; Latham, D. W. ; Noyes, R. W. ; Butler, R. P. ; Marcy, G. W. ; Fischer, D. A. ; Fernández, J. M. ; Esquerdo, G. ; Sasselov, D. D. ; Stefanik, R. P. ; Pál, A. ; Lázár, J. ; Papp, I. ; Sári, P. / HAT-P-4b : A metal-rich low-density transiting hot Jupiter. In: Astrophysical Journal. 2007 ; Vol. 670, No. 1 PART 2.
@article{e6ea2351b12342a5a1599616aaf50e05,
title = "HAT-P-4b: A metal-rich low-density transiting hot Jupiter",
abstract = "We describe the discovery of HAT-P-4b, a low-density extrasolar planet transiting BD +36 2593, a V = 11.2 mag slightly evolved metal-rich late F star. The planet's orbital period is 3.056536 ± 0.000057 days with a midtransit epoch of 2,454,245.8154 ± 0.0003 (HJD). Based on high-precision photometric and spectroscopic data, and by using transit light curve modeling, spectrum analysis, and evolutionary models, we derive the following planet parameters: Mp = 0.68 ± 0.04 MRJ, R p = 1.27 ± 0.05 RJ ρp = 0.41 ± 0.06 g cm-3, and a = 0.0446 ± 0.0012 AU. Because of its relatively large radius, together with its assumed high metallicity (that of its parent star), this planet adds to the theoretical challenges of explaining inflated extrasolar planets.",
keywords = "Planetary systems, Techniques: photometric, Techniques: spectroscopic",
author = "G. Kov{\'a}cs and Bakos, {G. {\'A}} and G. Torres and A. Sozzetti and Latham, {D. W.} and Noyes, {R. W.} and Butler, {R. P.} and Marcy, {G. W.} and Fischer, {D. A.} and Fern{\'a}ndez, {J. M.} and G. Esquerdo and Sasselov, {D. D.} and Stefanik, {R. P.} and A. P{\'a}l and J. L{\'a}z{\'a}r and I. Papp and P. S{\'a}ri",
year = "2007",
doi = "10.1086/524058",
language = "English",
volume = "670",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "IOP Publishing Ltd.",
number = "1 PART 2",

}

TY - JOUR

T1 - HAT-P-4b

T2 - A metal-rich low-density transiting hot Jupiter

AU - Kovács, G.

AU - Bakos, G. Á

AU - Torres, G.

AU - Sozzetti, A.

AU - Latham, D. W.

AU - Noyes, R. W.

AU - Butler, R. P.

AU - Marcy, G. W.

AU - Fischer, D. A.

AU - Fernández, J. M.

AU - Esquerdo, G.

AU - Sasselov, D. D.

AU - Stefanik, R. P.

AU - Pál, A.

AU - Lázár, J.

AU - Papp, I.

AU - Sári, P.

PY - 2007

Y1 - 2007

N2 - We describe the discovery of HAT-P-4b, a low-density extrasolar planet transiting BD +36 2593, a V = 11.2 mag slightly evolved metal-rich late F star. The planet's orbital period is 3.056536 ± 0.000057 days with a midtransit epoch of 2,454,245.8154 ± 0.0003 (HJD). Based on high-precision photometric and spectroscopic data, and by using transit light curve modeling, spectrum analysis, and evolutionary models, we derive the following planet parameters: Mp = 0.68 ± 0.04 MRJ, R p = 1.27 ± 0.05 RJ ρp = 0.41 ± 0.06 g cm-3, and a = 0.0446 ± 0.0012 AU. Because of its relatively large radius, together with its assumed high metallicity (that of its parent star), this planet adds to the theoretical challenges of explaining inflated extrasolar planets.

AB - We describe the discovery of HAT-P-4b, a low-density extrasolar planet transiting BD +36 2593, a V = 11.2 mag slightly evolved metal-rich late F star. The planet's orbital period is 3.056536 ± 0.000057 days with a midtransit epoch of 2,454,245.8154 ± 0.0003 (HJD). Based on high-precision photometric and spectroscopic data, and by using transit light curve modeling, spectrum analysis, and evolutionary models, we derive the following planet parameters: Mp = 0.68 ± 0.04 MRJ, R p = 1.27 ± 0.05 RJ ρp = 0.41 ± 0.06 g cm-3, and a = 0.0446 ± 0.0012 AU. Because of its relatively large radius, together with its assumed high metallicity (that of its parent star), this planet adds to the theoretical challenges of explaining inflated extrasolar planets.

KW - Planetary systems

KW - Techniques: photometric

KW - Techniques: spectroscopic

UR - http://www.scopus.com/inward/record.url?scp=40249090474&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=40249090474&partnerID=8YFLogxK

U2 - 10.1086/524058

DO - 10.1086/524058

M3 - Article

VL - 670

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 1 PART 2

ER -