HATS-39b, HATS-40b, HATS-41b, and HATS-42b: Three inflated hot Jupiters and a super-Jupiter transiting F stars

J. Bento, J. D. Hartman, G. A. Bakos, W. Bhatti, Z. Csubry, K. Penev, D. Bayliss, M. de Val-Borro, G. Zhou, R. Brahm, N. Espinoza, M. Rabus, A. Jordán, V. Suc, S. Ciceri, P. Sarkis, T. Henning, L. Mancini, C. G. Tinney, D. J. WrightS. Durkan, T. G. Tan, J. Lázár, I. Papp, P. Sári

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


We report the discovery of four transiting hot Jupiters from the HATSouth survey: HATS- 39b, HATS-40b, HATS-41b, and HATS-42b. These discoveries add to the growing number of transiting planets orbiting moderately bright (12.5 ≲ v ≲ 13.7) F dwarf stars on short (2-5 d) periods. The planets have similar radii, ranging from 1.33-0.20 +0.29 RJ for HATS-41b to 1.58-0.12+0.16 RJ for HATS-40b. Their masses and bulk densities, however, span more than an order of magnitude. HATS-39b has a mass of 0.63 ± 0.13MJ, and an inflated radius of 1.57 ± 0.12 RJ, making it a good target for future transmission spectroscopic studies. HATS- 41b is a very massive 9.7 ± 1.6MJ planet and one of only a few hot Jupiters found to date with a mass over 5 MJ. This planet orbits the highest metallicity star ([Fe/H] = 0.470 ± 0.010) known to host a transiting planet and is also likely on an eccentric orbit. The highmass, coupled with a relatively young age (1.34-0.51+0.31 Gyr) for the host star, is a factor that may explain why this planet's orbit has not yet circularized.

Original languageEnglish
Pages (from-to)3406-3423
Number of pages18
JournalMonthly Notices of the Royal Astronomical Society
Issue number3
StatePublished - 1 Jul 2018
Externally publishedYes


  • GSC 6530-01596
  • GSC 6533-01514
  • GSC 7107-03973
  • HATS-40
  • HATS-41
  • HATS-42
  • Planetary systems
  • Stars: Individual: GSC 6550-00341
  • Stars: Individual: HATS- 39
  • Techniques: Photometric
  • Techniques: Spectroscopic


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