HATS-39b, HATS-40b, HATS-41b, and HATS-42b: three inflated hot Jupiters and a super-Jupiter transiting F stars. Issue 3 (20th March 2018)

• Record Type: Journal Article
• Authors: Bento, J; Hartman, J D; Bakos, G Á; Bhatti, W; Csubry, Z; Penev, K; Bayliss, D; de Val-Borro, M; Zhou, G; Brahm, R; Espinoza, N; Rabus, M; Jordán, A; Suc, V; Ciceri, S; Sarkis, P; Henning, T; Mancini, L; Tinney, C G; Wright, D J; Durkan, S; Tan, T G; Lázár, J; Papp, I; Sári, P
• Is Part Of: Monthly notices of the Royal Astronomical Society. Volume 477:Issue 3(2018)
• Page Start: 3406
• Page End: 3423
• Publication Date: 2018-03-20
• Subjects: techniques: photometric -- techniques: spectroscopic -- stars: individual: HATS-39, HATS-40, HATS-41, HATS-42 -- stars: individual: GSC 6550-00341, GSC 6533-01514, GSC 6530-01596, GSC 7107-03973 -- planetary systems; Astronomy -- Periodicals; Periodicals; 520.5
• DOI: 10.1093/mnras/sty726
• Languages: English
• ISSNs: 0035-8711

Abstract

Abstract: 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 $1.33^{+0.29}_{-0.20}$ R J for HATS-41b to $1.58^{+0.16}_{-0.12}$ R J for HATS-40b. Their masses and bulk densities, however, span more than an order of magnitude. HATS-39b has a mass of 0.63 ± 0.13 M J, and an inflated radius of 1.57 ± 0.12 R J, making it a good target for future transmission spectroscopic studies. HATS-41b is a very massive 9.7 ± 1.6 M J planet and one of only a few hot Jupiters found to date with a mass over 5 M J . 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 high mass, coupled with a relatively young age ($1.34^{+0.31}_{-0.51}$ Gyr) for the host star, is a factor that may explain why this planet's orbit has not yet circularized.