[en] We report the discovery of four transiting giant planets around K dwarfs. The planets HATS-47b, HATS-48Ab, HATS-49b, and HATS-72b have masses of 0.369[SUB]-0.021[/SUB][SUP]+0.031[/SUP] M_{J}, 0.243[SUB]-0.030[/SUB][SUP]+0.022[/SUP] M_{J}, 0.353[SUB]-0.027[/SUB][SUP]+0.038[/SUP] M_{J}, and 0.1254± 0.0039 M_{J}, respectively, and radii of 1.117± 0.014 R_{J}, 0.800± 0.015 R_{J}, 0.765± 0.013 R_{J}, and 0.7224± 0.0032 R_{J}, respectively. The planets orbit close to their host stars with orbital periods of 3.9228 days, 3.1317 days, 4.1480 days, and 7.3279ays, respectively. The hosts are main-sequence K dwarfs with masses of 0.674[SUB]-0.012[/SUB][SUP]+0.016[/SUP] 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 ∼1400 au.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Hartman, J. D.; Department of Astrophysical Sciences, Princeton University, NJ 08544, USA
Jordán, Andrés; Facultad de Ingeniería y Ciencias, Universidad Adolfo Ibáñez, Av. Diagonal las Torres 2640, Peñalolén, Santiago, Chile ; Millennium Institute for Astrophysics, Chile
Bayliss, D.; Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
Bakos, G. Á.; Packard Fellow. ; Department of Astrophysical Sciences, Princeton University, NJ 08544, USA ; MTA Distinguished Guest Fellow, Konkoly Observatory, Hungary
Bento, J.; Research School of Astronomy and Astrophysics, Australian National University, Canberra, ACT 2611, Australia
Bhatti, W.; Department of Astrophysical Sciences, Princeton University, NJ 08544, USA
Brahm, R.; Millennium Institute for Astrophysics, Chile ; Center of Astro-Engineering UC, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, 7820436 Macul, Santiago, Chile ; Instituto de Astrofísica, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, 7820436 Macul, Santiago, Chile
Csubry, Z.; Department of Astrophysical Sciences, Princeton University, NJ 08544, USA
Espinoza, N.; Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
Henning, Th; Max Planck Institute for Astronomy, Königstuhl 17, D-69117—Heidelberg, Germany
Mancini, L.; Max Planck Institute for Astronomy, Königstuhl 17, D-69117—Heidelberg, Germany ; Department of Physics, University of Rome Tor Vergata, Via della Ricerca Scientifica 1, I-00133—Roma, Italy ; INAF—Astrophysical Observatory of Turin, Via Osservatorio 20, I-10025—Pino Torinese, Italy
Penev, K.; Department of Physics, University of Texas at Dallas, Richardson, TX 75080, USA
Rabus, M.; Las Cumbres Observatory Global Telescope Network, 6740 Cortona Dr. Suite 102, Goleta, CA 93117, USA ; Department of Physics, University of California, Santa Barbara, CA 93106-9530, USA
Sarkis, P.; Max Planck Institute for Astronomy, Königstuhl 17, D-69117—Heidelberg, Germany
Suc, V.; Instituto de Astrofísica, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, 7820436 Macul, Santiago, Chile
de Val-Borro, M.; Astrochemistry Laboratory, Goddard Space Flight Center, NASA, 8800 Greenbelt Rd, Greenbelt, MD 20771, USA
Zhou, G.; Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
Crane, J. D.; The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA
Shectman, S.; The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA
Teske, J. K.; NASA Hubble Fellow. ; The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA
Wang, S. X.; The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA
Butler, R. P.; Department of Terrestrial Magnetism, Carnegie Institution for Science, Washington, DC 20015, USA
Lázár, J.; Hungarian Astronomical Association, 1451 Budapest, Hungary
Papp, I.; Hungarian Astronomical Association, 1451 Budapest, Hungary
Sári, P.; Hungarian Astronomical Association, 1451 Budapest, Hungary
Anderson, D. R.; Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK ; Astrophysics Group, Keele University, Staffordshire, ST5 5BG, UK
Hellier, C.; Astrophysics Group, Keele University, Staffordshire, ST5 5BG, UK
West, R. G.; Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
Pozuelos Romero, Francisco José ; Astrobiology Research Unit, University of Liege, Allée du 6 Août 19C, B-4000 Liège, Belgium ; STAR Research Unit, University of Liege, Allée du 6 Août 19C, B-4000 Liège, Belgium
Jehin, Emmanuel ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa)
Gillon, Michaël ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Exotic
Nielsen, L.; Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland
Lendl, M.; Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland ; Space Research Institute, Austrian Academy of Sciences, Schmiedlstr. 6, A-8042 Graz, Austria
Udry, S.; Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland
Ricker, George R.; Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
Vanderspek, Roland; Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
Latham, David W.; Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
Seager, S.; Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA ; Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA ; Department of Aeronautics and Astronautics, MIT, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
Winn, Joshua N.; Department of Astrophysical Sciences, Princeton University, NJ 08544, USA
Christiansen, Jessie; Caltech/IPAC-NASA Exoplanet Science Institute, 770 S. Wilson Avenue, Pasadena, CA 91106, USA
Crossfield, Ian J. M.; Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA ; Department of Physics and Astronomy, University of Kansas, 1251 Wescoe Hall Dr., Lawrence, KS 66045, USA
Henze, Christopher E.; NASA Ames Research Center, Moffett Field, CA, 94035, USA
Jenkins, Jon M.; NASA Ames Research Center, Moffett Field, CA, 94035, USA
Smith, Jeffrey C.; NASA Ames Research Center, Moffett Field, CA, 94035, USA ; SETI Institute, Mountain View, CA 94043, USA
Ting, Eric B.; NASA Ames Research Center, Moffett Field, CA, 94035, USA)
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