HATS-59b,c: A Transiting Hot Jupiter and a Cold Massive Giant Planet around a Sun-like Star

  • P. Sarkis
  • , Th Henning
  • , J. D. Hartman
  • , G. A. Bakos
  • , R. Brahm
  • , A. Jordán
  • , D. Bayliss
  • , L. Mancini
  • , N. Espinoza
  • , M. Rabus
  • , Z. Csubry
  • , W. Bhatti
  • , K. Penev
  • , G. Zhou
  • , J. Bento
  • , T. G. Tan
  • , P. Arriagada
  • , R. P. Butler
  • , J. D. Crane
  • , S. Shectman
  • C. G. Tinney, D. J. Wright, B. Addison, S. Durkan, V. Suc, L. A. Buchhave, M. De Val-Borro, J. Lázár, I. Papp, P. Sári

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

We report the first discovery of a multi-planetary system by the HATSouth network, HATS-59b,c, a planetary system with an inner transiting hot Jupiter and an outer cold massive giant planet, which was detected via radial velocity. The inner transiting planet, HATS-59b, is on an eccentric orbit with ℓ = 0.129 ± 0.049, orbiting a V = 13.951 ± 0.030 mag solar-like star (M∗ =1.038 ± 0.039 Mo and R∗ = 1.036 ± 0.067 Ro) with a period of 5.416081 ± 0.000016 days. The outer companion, HATS-59c is on a circular orbit with m sin i = 12.70 ± 0.87 MJ and a period of 1422 ± 14 days. The inner planet has a mass of 0.806 ± 0.069 MJ and a radius of 1.126 ± 0.077 RJ, yielding a density of 0.70 ± 0.16 g cm-3. Unlike most planetary systems that include only a single hot Jupiter, HATS-59b,c includes, in addition to the transiting hot Jupiter, a massive outer companion. The architecture of this system is valuable for understanding planet migration.

Original languageEnglish
Article number216
JournalAstronomical Journal
Volume156
Issue number5
DOIs
StatePublished - Nov 2018
Externally publishedYes

Keywords

  • photometric
  • planetary systems
  • stars: individual (HATS-59)
  • techniques: spectroscopic

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