Details

Autor(en) / Beteiligte

• Jordán, A.
• Bakos, G. Á.
• Bayliss, D.
• Bento, J.
• Bhatti, W.
• Brahm, R.
• Csubry, Z.
• Espinoza, N.
• Hartman, J. D.
• Henning, Th
• Mancini, L.
• Penev, K.
• Rabus, M.
• Sarkis, P.
• Suc, V.
• de Val-Borro, M.
• Zhou, G.
• Butler, R. P.
• Teske, J.
• Crane, J.
• Shectman, S.
• Tan, T. G.
• Thompson, I.
• Wallace, J. J.
• Lázár, J.
• Papp, I.
• Sári, P.

Titel

HATS-37Ab and HATS-38b: Two Transiting Hot Neptunes in the Desert

Ist Teil von

• The Astronomical journal, 2020-11, Vol.160 (5), p.222

Ort / Verlag

Madison: IOP Publishing

Erscheinungsjahr

2020

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• Abstract We report the discovery of two transiting Neptunes by the HATSouth survey. The planet HATS-37Ab has a mass of (31.5 ± 13.4 M ⊕ ) and a radius of , and is on a day orbit around a mag, star with a radius of . We also present evidence that the star HATS-37A has an unresolved stellar companion HATS-37B, with a photometrically estimated mass of . The planet HATS-38b has a mass of (23.5 ± 3.5 M ⊕ ) and a radius of , and is on a day orbit around a mag, star with a radius of . Both systems appear to be old, with isochrone-based ages of Gyr, and 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.