TY - JOUR
T1 - HATS-50b through HATS-53b
T2 - Four Transiting Hot Jupiters Orbiting G-type Stars Discovered by the HATSouth Survey
AU - Henning, T.
AU - Mancini, L.
AU - Sarkis, P.
AU - Bakos, G.
AU - Hartman, J. D.
AU - Bayliss, D.
AU - Bento, J.
AU - Bhatti, W.
AU - Brahm, R.
AU - Ciceri, S.
AU - Csubry, Z.
AU - Val-Borro, M. De
AU - Espinoza, N.
AU - Fulton, B. J.
AU - Howard, A. W.
AU - Isaacson, H. T.
AU - Jordán, A.
AU - Marcy, G. W.
AU - Penev, K.
AU - Rabus, M.
AU - Suc, V.
AU - Tan, T. G.
AU - Tinney, C. G.
AU - Wright, D. J.
AU - Zhou, G.
AU - Durkan, S.
AU - Lazar, J.
AU - Papp, I.
AU - Sari, P.
N1 - Funding Information:
Development of the HATSouth project was funded by NSF MRI grant NSF/AST-0723074, operations have been supported by NASA grants NNX09AB29G, NNX12AH91H, and NNX17AB61G, and follow-up observations receive partial support from grant NSF/AST-1108686. J.H. acknowledges support from NASA grant NNX14AE87G. A.J. acknowledges support from FONDECYT project 1171208, BASAL CATA PFB-06, and project IC120009 Millennium Institute of Astrophysics (MAS) of the illennium Science Initiative, Chilean Ministry of Economy. N.E. is supported by CONICYT-PCHA/Doctorado Nacional. R.B. and N.E. acknowledge support from project IC120009 Millennium Institute of Astrophysics (MAS) of the Millennium Science Initiative, Chilean Ministry of Economy. V.S. acknowledges support form BASAL CATA PFB-06. A.V. is supported by the NSF Graduate Research Fellowship, grant No. DGE 1144152.
Publisher Copyright:
© 2018. The American Astronomical Society. All rights reserved.
PY - 2018/2
Y1 - 2018/2
N2 - We report the discovery of four close-in transiting exoplanets (HATS-50b through HATS-53b), discovered using the HATSouth three-continent network of homogeneous and automated telescopes. These new exoplanets belong to the class of hot Jupiters and orbit G-type dwarf stars, with brightness in the range V = 12.5-14.0 mag. While HATS-53 has many physical characteristics similar to the Sun, the other three stars appear to be metal-rich ([Fe H] = 0.2-0.3), larger, and more massive. Three of the new exoplanets, namely HATS-50b, HATS-51b, and HATS-53b, have low density (HATS-50b: 0.39 ± 0.10 MJ, 1.130 ± 0.075 RJ; HATS-51b: 0.768 ± 0.045 MJ, 1.41 ± 0.19 RJ; HATS-53b: 0.595 ± 0.089 MJ, 1.340 ± 0.056 RJ) and similar orbital periods (3.8297 days, 3.3489 days, 3.8538 days, respectively). Instead, HATS-52b is more dense (mass 2.24 ± 0.15 MJ and radius 1.382 ± 0.086 RJ) and has a shorter orbital period (1.3667 days). It also receives an intensive radiation from its parent star and, consequently, presents a high equilibrium temperature (Teq = 1834 ± 73 K). HATS-50 shows a marginal additional transit feature consistent with an ultra-short-period hot super Neptune (upper mass limit 0.16 MJ), which will be able to be confirmed with TESS photometry.
AB - We report the discovery of four close-in transiting exoplanets (HATS-50b through HATS-53b), discovered using the HATSouth three-continent network of homogeneous and automated telescopes. These new exoplanets belong to the class of hot Jupiters and orbit G-type dwarf stars, with brightness in the range V = 12.5-14.0 mag. While HATS-53 has many physical characteristics similar to the Sun, the other three stars appear to be metal-rich ([Fe H] = 0.2-0.3), larger, and more massive. Three of the new exoplanets, namely HATS-50b, HATS-51b, and HATS-53b, have low density (HATS-50b: 0.39 ± 0.10 MJ, 1.130 ± 0.075 RJ; HATS-51b: 0.768 ± 0.045 MJ, 1.41 ± 0.19 RJ; HATS-53b: 0.595 ± 0.089 MJ, 1.340 ± 0.056 RJ) and similar orbital periods (3.8297 days, 3.3489 days, 3.8538 days, respectively). Instead, HATS-52b is more dense (mass 2.24 ± 0.15 MJ and radius 1.382 ± 0.086 RJ) and has a shorter orbital period (1.3667 days). It also receives an intensive radiation from its parent star and, consequently, presents a high equilibrium temperature (Teq = 1834 ± 73 K). HATS-50 shows a marginal additional transit feature consistent with an ultra-short-period hot super Neptune (upper mass limit 0.16 MJ), which will be able to be confirmed with TESS photometry.
KW - stars: individual (HATS-50, HATS-51, HATS-52, HATS-53)
KW - techniques: photometric
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U2 - 10.3847/1538-3881/aaa254
DO - 10.3847/1538-3881/aaa254
M3 - Article
AN - SCOPUS:85042123151
SN - 0004-6256
VL - 155
JO - Astronomical Journal
JF - Astronomical Journal
IS - 2
M1 - 79
ER -