HAT-P-13b,c

A transiting hot jupiter with a massive outer companion on an eccentric orbit

G. Á Bakos, A. W. Howard, R. W. Noyes, J. Hartman, G. Torres, Géza Kovács, D. A. Fischer, D. W. Latham, J. A. Johnson, G. W. Marcy, D. D. Sasselov, R. P. Stefanik, B. Sipcz, Gábor Kovács, G. A. Esquerdo, A. Pál, J. Lázár, I. Papp, P. Sári

Research output: Contribution to journalArticle

76 Citations (Scopus)

Abstract

We report on the discovery of a planetary system with a close-in transiting hot Jupiter on a near circular orbit and a massive outer planet on a highly eccentric orbit. The inner planet, HAT-P-13b, transits the bright V= 10.622 G4 dwarf star GSC 3416 - 00543 every P = 2.916260 0.000010 days, with transit epoch Tc = 2454779.92979 ± 0.00038 (BJD) and duration 0.1345 ± 0.0017days. The outer planet HAT-P-13c orbits the star every P 2 = 428.5 ± 3.0 days with a nominal transit center (assuming zero impact parameter) of T 2c = 2454870.4 1.8 (BJD) or time of periastron passage T 2,peri = 2454890.05 ± 0.48 (BJD). Transits of the outer planet have not been observed, and may not be present. The host star has a mass of 1.22+0.05 -0.10 M ·, radius of 1.56 ± 0.08R ·, effective temperature of 5653 ± 90K, and is rather metal-rich with [Fe/H] = +0.41 ± 0.08. The inner planetary companion has a mass of 0.853 +0.029 -0.046M J, and radius of 1.281 ± 0.079R J, yielding a mean density of 0.498+0.103 -0.069g cm-3. The outer companion has m 2sin i 2 = 15.2 ± 1.0 M J, and orbits on a highly eccentric orbit of e 2 = 0.691 ± 0.018. While we have not detected significant transit timing variations of HAT-P-13b, due to gravitational and light-travel time effects, future observations will constrain the orbital inclination of HAT-P-13c, along with its mutual inclination to HAT-P-13b. The HAT-P-13(b, c) double-planet system may prove extremely valuable for theoretical studies of the formation and dynamics of planetary systems.

Original languageEnglish
Pages (from-to)446-456
Number of pages11
JournalAstrophysical Journal
Volume707
Issue number1
DOIs
Publication statusPublished - 2009

Fingerprint

eccentric orbits
transit
Jupiter (planet)
Jupiter
planets
planet
planetary systems
inclination
time measurement
orbits
dwarf stars
stars
radii
circular orbits
theoretical study
travel time
travel
orbitals
metal
metals

Keywords

  • Planetary systems
  • Stars: individual (HAT-P-13, GSC 3416-00543)
  • Techniques: photometric
  • Techniques: spectroscopic

ASJC Scopus subject areas

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

Cite this

HAT-P-13b,c : A transiting hot jupiter with a massive outer companion on an eccentric orbit. / Bakos, G. Á; Howard, A. W.; Noyes, R. W.; Hartman, J.; Torres, G.; Kovács, Géza; Fischer, D. A.; Latham, D. W.; Johnson, J. A.; Marcy, G. W.; Sasselov, D. D.; Stefanik, R. P.; Sipcz, B.; Kovács, Gábor; Esquerdo, G. A.; Pál, A.; Lázár, J.; Papp, I.; Sári, P.

In: Astrophysical Journal, Vol. 707, No. 1, 2009, p. 446-456.

Research output: Contribution to journalArticle

Bakos, GÁ, Howard, AW, Noyes, RW, Hartman, J, Torres, G, Kovács, G, Fischer, DA, Latham, DW, Johnson, JA, Marcy, GW, Sasselov, DD, Stefanik, RP, Sipcz, B, Kovács, G, Esquerdo, GA, Pál, A, Lázár, J, Papp, I & Sári, P 2009, 'HAT-P-13b,c: A transiting hot jupiter with a massive outer companion on an eccentric orbit', Astrophysical Journal, vol. 707, no. 1, pp. 446-456. https://doi.org/10.1088/0004-637X/707/1/446
Bakos, G. Á ; Howard, A. W. ; Noyes, R. W. ; Hartman, J. ; Torres, G. ; Kovács, Géza ; Fischer, D. A. ; Latham, D. W. ; Johnson, J. A. ; Marcy, G. W. ; Sasselov, D. D. ; Stefanik, R. P. ; Sipcz, B. ; Kovács, Gábor ; Esquerdo, G. A. ; Pál, A. ; Lázár, J. ; Papp, I. ; Sári, P. / HAT-P-13b,c : A transiting hot jupiter with a massive outer companion on an eccentric orbit. In: Astrophysical Journal. 2009 ; Vol. 707, No. 1. pp. 446-456.
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abstract = "We report on the discovery of a planetary system with a close-in transiting hot Jupiter on a near circular orbit and a massive outer planet on a highly eccentric orbit. The inner planet, HAT-P-13b, transits the bright V= 10.622 G4 dwarf star GSC 3416 - 00543 every P = 2.916260 0.000010 days, with transit epoch Tc = 2454779.92979 ± 0.00038 (BJD) and duration 0.1345 ± 0.0017days. The outer planet HAT-P-13c orbits the star every P 2 = 428.5 ± 3.0 days with a nominal transit center (assuming zero impact parameter) of T 2c = 2454870.4 1.8 (BJD) or time of periastron passage T 2,peri = 2454890.05 ± 0.48 (BJD). Transits of the outer planet have not been observed, and may not be present. The host star has a mass of 1.22+0.05 -0.10 M ·, radius of 1.56 ± 0.08R ·, effective temperature of 5653 ± 90K, and is rather metal-rich with [Fe/H] = +0.41 ± 0.08. The inner planetary companion has a mass of 0.853 +0.029 -0.046M J, and radius of 1.281 ± 0.079R J, yielding a mean density of 0.498+0.103 -0.069g cm-3. The outer companion has m 2sin i 2 = 15.2 ± 1.0 M J, and orbits on a highly eccentric orbit of e 2 = 0.691 ± 0.018. While we have not detected significant transit timing variations of HAT-P-13b, due to gravitational and light-travel time effects, future observations will constrain the orbital inclination of HAT-P-13c, along with its mutual inclination to HAT-P-13b. The HAT-P-13(b, c) double-planet system may prove extremely valuable for theoretical studies of the formation and dynamics of planetary systems.",
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T2 - A transiting hot jupiter with a massive outer companion on an eccentric orbit

AU - Bakos, G. Á

AU - Howard, A. W.

AU - Noyes, R. W.

AU - Hartman, J.

AU - Torres, G.

AU - Kovács, Géza

AU - Fischer, D. A.

AU - Latham, D. W.

AU - Johnson, J. A.

AU - Marcy, G. W.

AU - Sasselov, D. D.

AU - Stefanik, R. P.

AU - Sipcz, B.

AU - Kovács, Gábor

AU - Esquerdo, G. A.

AU - Pál, A.

AU - Lázár, J.

AU - Papp, I.

AU - Sári, P.

PY - 2009

Y1 - 2009

N2 - We report on the discovery of a planetary system with a close-in transiting hot Jupiter on a near circular orbit and a massive outer planet on a highly eccentric orbit. The inner planet, HAT-P-13b, transits the bright V= 10.622 G4 dwarf star GSC 3416 - 00543 every P = 2.916260 0.000010 days, with transit epoch Tc = 2454779.92979 ± 0.00038 (BJD) and duration 0.1345 ± 0.0017days. The outer planet HAT-P-13c orbits the star every P 2 = 428.5 ± 3.0 days with a nominal transit center (assuming zero impact parameter) of T 2c = 2454870.4 1.8 (BJD) or time of periastron passage T 2,peri = 2454890.05 ± 0.48 (BJD). Transits of the outer planet have not been observed, and may not be present. The host star has a mass of 1.22+0.05 -0.10 M ·, radius of 1.56 ± 0.08R ·, effective temperature of 5653 ± 90K, and is rather metal-rich with [Fe/H] = +0.41 ± 0.08. The inner planetary companion has a mass of 0.853 +0.029 -0.046M J, and radius of 1.281 ± 0.079R J, yielding a mean density of 0.498+0.103 -0.069g cm-3. The outer companion has m 2sin i 2 = 15.2 ± 1.0 M J, and orbits on a highly eccentric orbit of e 2 = 0.691 ± 0.018. While we have not detected significant transit timing variations of HAT-P-13b, due to gravitational and light-travel time effects, future observations will constrain the orbital inclination of HAT-P-13c, along with its mutual inclination to HAT-P-13b. The HAT-P-13(b, c) double-planet system may prove extremely valuable for theoretical studies of the formation and dynamics of planetary systems.

AB - We report on the discovery of a planetary system with a close-in transiting hot Jupiter on a near circular orbit and a massive outer planet on a highly eccentric orbit. The inner planet, HAT-P-13b, transits the bright V= 10.622 G4 dwarf star GSC 3416 - 00543 every P = 2.916260 0.000010 days, with transit epoch Tc = 2454779.92979 ± 0.00038 (BJD) and duration 0.1345 ± 0.0017days. The outer planet HAT-P-13c orbits the star every P 2 = 428.5 ± 3.0 days with a nominal transit center (assuming zero impact parameter) of T 2c = 2454870.4 1.8 (BJD) or time of periastron passage T 2,peri = 2454890.05 ± 0.48 (BJD). Transits of the outer planet have not been observed, and may not be present. The host star has a mass of 1.22+0.05 -0.10 M ·, radius of 1.56 ± 0.08R ·, effective temperature of 5653 ± 90K, and is rather metal-rich with [Fe/H] = +0.41 ± 0.08. The inner planetary companion has a mass of 0.853 +0.029 -0.046M J, and radius of 1.281 ± 0.079R J, yielding a mean density of 0.498+0.103 -0.069g cm-3. The outer companion has m 2sin i 2 = 15.2 ± 1.0 M J, and orbits on a highly eccentric orbit of e 2 = 0.691 ± 0.018. While we have not detected significant transit timing variations of HAT-P-13b, due to gravitational and light-travel time effects, future observations will constrain the orbital inclination of HAT-P-13c, along with its mutual inclination to HAT-P-13b. The HAT-P-13(b, c) double-planet system may prove extremely valuable for theoretical studies of the formation and dynamics of planetary systems.

KW - Planetary systems

KW - Stars: individual (HAT-P-13, GSC 3416-00543)

KW - Techniques: photometric

KW - Techniques: spectroscopic

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U2 - 10.1088/0004-637X/707/1/446

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