Hartman, JD, Jordán, A, Bayliss, D, Bakos, GÁ, Bento, J, Bhatti, W, Brahm, R, Csubry, Z, Espinoza, N, Henning, T, Mancini, L, Penev, K, Rabus, M, Sarkis, P, Suc, V, Val-Borro, MD, Zhou, G, Crane, JD, Shectman, S, Teske, JK, Wang, SX, Butler, RP, Lázár, J, Papp, I, Sári, P, Anderson, DR ORCID: https://orcid.org/0000-0001-7416-7522, Hellier, C ORCID: https://orcid.org/0000-0002-3439-1439, West, RG, Barkaoui, K, Pozuelos, FJ, Jehin, E, Gillon, M, Nielsen, L, Lendl, M, Udry, S, Ricker, GR, Vanderspek, R, Latham, DW, Seager, S, Winn, JN, Christiansen, J, Crossfield, IJM, Henze, CE, Jenkins, JM, Smith, JC and Ting, EB (2020) HATS-47b, HATS-48Ab, HATS-49b and HATS-72b: Four Warm Giant Planets Transiting K Dwarfs. Astronomical Journal, 159 (4).

[img]
Preview
Text
Hartman_2020_AJ_159_173.pdf - Published Version

Download (4MB) | Preview

Abstract

We report the discovery of four transiting giant planets around K dwarfs. The planets HATS-47b, HATS-48Ab, HATS49b, and HATS-72b have masses of 0.369+ 0.0210.031MJ, 0.243+ 0.0300.022 MJ, 0.353+ 0.0270.038 MJ, and 0.1254. 0.0039 MJ, respectively, and radii of 1.117. 0.014 RJ, 0.800. 0.015 RJ, 0.765. 0.013 RJ, and 0.7224. 0.0032 RJ, respectively. The planets orbit close to their host stars with orbital periods of 3.9228 days, 3.1317 days, 4.1480 days, and 7.3279 days, respectively. The hosts are main-sequence K dwarfs with masses of 0.674+ 0.0120.016.M, 0.7279. 0.0066.M, 0.7133. 0.0075.M, and 0.7311. 0.0028, and with V-band magnitudes of V = 14.829. 0.010, 14.35. 0.11, 14.998. 0.040 and 12.469. 0.010. The super-Neptune HATS-72b (a.k.a. WASP-191b and TOI 294.01) was independently identified as a transiting planet candidate by the HATSouth, WASP, and TESS surveys, and we present a combined analysis of all of the data gathered by each of these projects (and their follow-up programs). An exceptionally precise mass is measured for HATS-72b thanks to high-precision radial velocity (RV) measurements obtained with VLT/ESPRESSO, FEROS, HARPS, and Magellan/PFS. We also incorporate TESS observations of the warm Saturn-hosting systems HATS-47 (a.k.a. TOI.1073.01), HATS-48A, and HATS-49. HATS-47 was independently identified as a candidate by the TESS team, while the other two systems were not previously identified from the TESS data. The RV orbital variations are measured for these systems using Magellan/PFS. HATS-48A has a resolved 5.. 4 neighbor in Gaia.DR2, which is a common-proper-motion binary star companion to HATS-48A with a mass of 0.22.M and a current projected physical separation of similar to 1400 au.

Item Type: Article
Additional Information: This is the final published version (version of record). It was first published online via IOP Science at http://dx.doi.org/10.3847/1538-3881/ab7821 - please refer to any applicable terms of use of the publisher.
Uncontrolled Keywords: stars, planets, exoplanets, extrasolar gas giants, Hot Jupiters, transits
Subjects: Q Science > QB Astronomy > QB600 Planets. Planetology
Q Science > QB Astronomy > QB799 Stars
Divisions: Faculty of Natural Sciences > School of Chemical and Physical Sciences
Related URLs:
Depositing User: Symplectic
Date Deposited: 15 Apr 2020 15:41
Last Modified: 17 Apr 2020 09:51
URI: https://eprints.keele.ac.uk/id/eprint/7888

Actions (login required)

View Item View Item