학술논문
Two Bright M Dwarfs Hosting Ultra-Short-Period Super-Earths with Earth-like Compositions
Document Type
Working Paper
Author
Hirano, Teruyuki; Livingston, John H.; Fukui, Akihiko; Narita, Norio; Harakawa, Hiroki; Ishikawa, Hiroyuki Tako; Miyakawa, Kohei; Kimura, Tadahiro; Nakayama, Akifumi; Fujita, Naho; Hori, Yasunori; Stassun, Keivan G.; Bieryla, Allyson; Cadieux, Charles; Ciardi, David R.; Collins, Karen A.; Ikoma, Masahiro; Vanderburg, Andrew; Barclay, Thomas; Brasseur, C. E.; de Leon, Jerome P.; Doty, John P.; Doyon, René; Esparza-Borges, Emma; Esquerdo, Gilbert A.; Furlan, Elise; Gaidos, Eric; Gonzales, Erica J.; Hodapp, Klaus; Kusakabe, Nobuhiko; Kuzuhara, Masayuki; Lafrenière, David; Latham, David W.; Massey, Bob; Mori, Mayuko; Murgas, Felipe; Nishikawa, Jun; Nishiumi, Taku; Omiya, Masashi; Paegert, Martin; Palle, Enric; Parviainen, Hannu; Quinn, Samuel N.; Howell, Steve B.; Isogai, Keisuke; Jacobson, Shane; Jenkins, Jon M.; Jensen, Eric L. N.; Kawauchi, Kiyoe; Kotani, Takayuki; Kudo, Tomoyuki; Kurita, Seiya; Kurokawa, Takashi; Ricker, George R.; Schwarz, Richard P.; Seager, Sara; Tenenbaum, Peter; Terada, Yuka; Vanderspek, Roland K.; Watanabe, Noriharu; Winn, Joshua N.
Source
Subject
Language
Abstract
We present observations of two bright M dwarfs (TOI-1634 and TOI-1685: $J=9.5-9.6$) hosting ultra-short period (USP) planets, identified by the TESS mission. The two stars are similar in temperature, mass, and radius ($T_\mathrm{eff}\,\approx\,3500$ K, $M_\star\,\approx\,0.45-0.46\,M_\odot$, and $R_\star\approx 0.45-0.46\,R_\odot$), and the planets are both super-Earth-sized ($1.25\,R_\oplus