TY - JOUR
T1 - HATS-37Ab and HATS-38b
T2 - Two transiting hot neptunes in the desert*
AU - Jordán, A.
AU - Bakos, G.
AU - Bayliss, D.
AU - Bento, J.
AU - Bhatti, W.
AU - Brahm, R.
AU - Csubry, Z.
AU - Espinoza, N.
AU - Hartman, J. D.
AU - Henning, Th
AU - Mancini, L.
AU - Penev, K.
AU - Rabus, M.
AU - Sarkis, P.
AU - Suc, V.
AU - de Val-Borro, M.
AU - Zhou, G.
AU - Butler, R. P.
AU - Teske, J.
AU - Crane, J.
AU - Shectman, S.
AU - Tan, T. G.
AU - Thompson, I.
AU - Wallace, J. J.
AU - Lázár, J.
AU - Papp, I.
AU - Sári, P.
N1 - Publisher Copyright:
© 2020. The American Astronomical Society. All rights reserved.
PY - 2020/11
Y1 - 2020/11
N2 - We report the discovery of two transiting Neptunes by the HATSouth survey. The planet HATS-37Ab has a mass of 0.099 ± 0.042 MJ (31.5 ± 13.4 M) and a radius of 0.606 ± 0.016 RJ, and is on a P = 4.3315 day orbit around a V = 12.266 ± 0.030 mag, 0.843-+0.0120.017 M☉ star with a radius of 0.877-+0.0120.019 R☉. We also present evidence that the star HATS-37A has an unresolved stellar companion HATS-37B, with a photometrically estimated mass of 0.654 ± 0.033 M☉. The planet HATS-38b has a mass of 0.074 ± 0.011 MJ (23.5 ± 3.5 M) and a radius of 0.614 ± 0.017 RJ, and is on a P = 4.3750 day orbit around a V = 12.411 ± 0.030 mag, 0.890-+0.0120.016 M☉ star with a radius of 1.105 ± 0.016 R☉. Both systems appear to be old, with isochrone-based ages of 11.46-+1.450.79 Gyr, and 11.89 ± 0.60 Gyr, respectively. Both HATS-37Ab and HATS-38b lie in the Neptune desert and are thus examples of a population with a low occurrence rate. They are also among the lowest-mass planets found from ground-based wide-field surveys to date.
AB - We report the discovery of two transiting Neptunes by the HATSouth survey. The planet HATS-37Ab has a mass of 0.099 ± 0.042 MJ (31.5 ± 13.4 M) and a radius of 0.606 ± 0.016 RJ, and is on a P = 4.3315 day orbit around a V = 12.266 ± 0.030 mag, 0.843-+0.0120.017 M☉ star with a radius of 0.877-+0.0120.019 R☉. We also present evidence that the star HATS-37A has an unresolved stellar companion HATS-37B, with a photometrically estimated mass of 0.654 ± 0.033 M☉. The planet HATS-38b has a mass of 0.074 ± 0.011 MJ (23.5 ± 3.5 M) and a radius of 0.614 ± 0.017 RJ, and is on a P = 4.3750 day orbit around a V = 12.411 ± 0.030 mag, 0.890-+0.0120.016 M☉ star with a radius of 1.105 ± 0.016 R☉. Both systems appear to be old, with isochrone-based ages of 11.46-+1.450.79 Gyr, and 11.89 ± 0.60 Gyr, respectively. Both HATS-37Ab and HATS-38b lie in the Neptune desert and are thus examples of a population with a low occurrence rate. They are also among the lowest-mass planets found from ground-based wide-field surveys to date.
UR - http://www.scopus.com/inward/record.url?scp=85095686086&partnerID=8YFLogxK
U2 - 10.3847/1538-3881/aba530
DO - 10.3847/1538-3881/aba530
M3 - Article
AN - SCOPUS:85095686086
SN - 0004-6256
VL - 160
JO - Astronomical Journal
JF - Astronomical Journal
IS - 5
M1 - 222
ER -