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

Research output: Contribution to journalArticle

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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 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).

Original languageEnglish
JournalAstrophysical Journal
Volume666
Issue number2 PART 2
DOIs
Publication statusPublished - 2007

Fingerprint

K stars
dwarf stars
heavy elements
planets
planet
ephemerides
transit
Jupiter (planet)
Jupiter
bulk density
photometry
spectroscopy
orbits
stars
radii
metal
metals

Keywords

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

ASJC Scopus subject areas

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

Cite this

Torres, G., Bakos, G. A., Kovács, G., Latham, D. W., Fernández, J. M., Noyes, R. W., ... Sári, P. (2007). HAT-P-3b: A heavy-element-rich planet transiting A K dwarf star. Astrophysical Journal, 666(2 PART 2). https://doi.org/10.1086/521792

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

In: Astrophysical Journal, Vol. 666, No. 2 PART 2, 2007.

Research output: Contribution to journalArticle

Torres, G, Bakos, GA, Kovács, G, Latham, DW, Fernández, JM, Noyes, RW, Esquerdo, GA, Sozzetti, A, Fischer, DA, Butler, RP, Marcy, GW, Stefanik, RP, Sasselov, DD, Lázár, J, Papp, I & Sári, P 2007, 'HAT-P-3b: A heavy-element-rich planet transiting A K dwarf star', Astrophysical Journal, vol. 666, no. 2 PART 2. https://doi.org/10.1086/521792
Torres G, Bakos GA, Kovács G, Latham DW, Fernández JM, Noyes RW et al. HAT-P-3b: A heavy-element-rich planet transiting A K dwarf star. Astrophysical Journal. 2007;666(2 PART 2). https://doi.org/10.1086/521792
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. / HAT-P-3b : A heavy-element-rich planet transiting A K dwarf star. In: Astrophysical Journal. 2007 ; Vol. 666, No. 2 PART 2.
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