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 - 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
UR - https://www.scopus.com/pages/publications/85042123151
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 -