TOI 4201 b and TOI 5344 b: Discovery of Two Transiting Giant Planets around M-dwarf Stars and Revised Parameters for Three Others

Hartman, J. D. and Bakos, G. Á. and Csubry, Z. and Howard, A. W. and Isaacson, H. and Giacalone, S. and Chontos, A. and Narita, N. and Fukui, A. and de Leon, J. P. and Watanabe, N. and Mori, M. and Kagetani, T. and Fukuda, I. and Kawai, Y. and Ikoma, M. and Palle, E. and Murgas, F. and Esparza-Borges, E. and Parviainen, H. and Bouma, L. G. and Cointepas, M. and Bonfils, X. and Almenara, J. M. and Collins, Karen A. and Collins, Kevin I. and Relles, Howard M. and Barkaoui, Khalid and Schwarz, Richard P. and Mourad, Ghachoui and Timmermans, Mathilde and Dransfield, Georgina and Burdanov, Artem and de Wit, Julien and Jehin, Emmanuël and Triaud, Amaury H. M. J. and Gillon, Michaël and Benkhaldoun, Zouhair and Horne, Keith and Sefako, Ramotholo and Jordán, A. and Brahm, R. and Suc, V. and Howell, Steve B. and Furlan, E. and Schlieder, J. E. and Ciardi, D. and Barclay, T. and Gonzales, E. J. and Crossfield, I. and Dressing, C. D. and Goliguzova, M. and Tatarnikov, A. and Ricker, George R. and Vanderspek, Roland and Latham, David W. and Seager, S. and Winn, Joshua N. and Jenkins, Jon M. and Striegel, Stephanie and Shporer, Avi and Vanderburg, Andrew and Levine, Alan M. and Kostov, Veselin B. and Watanabe, David (2023) TOI 4201 b and TOI 5344 b: Discovery of Two Transiting Giant Planets around M-dwarf Stars and Revised Parameters for Three Others. The Astronomical Journal, 166 (4). p. 163. ISSN 0004-6256

[thumbnail of Hartman_2023_AJ_166_163.pdf] Text
Hartman_2023_AJ_166_163.pdf - Published Version
Download (2MB)

Abstract

We present the discovery from the TESS mission of two giant planets transiting M-dwarf stars: TOI 4201 b and TOI 5344 b. We also provide precise radial velocity measurements and updated system parameters for three other M dwarfs with transiting giant planets: TOI 519, TOI 3629, and TOI 3714. We measure planetary masses of 0.525 ± 0.064 MJ, 0.243 ± 0.020 MJ, 0.689 ± 0.030 MJ, 2.57 ± 0.15 MJ, and 0.412±0.040 MJ for TOI 519 b, TOI 3629 b, TOI 3714 b, TOI 4201 b, and TOI 5344 b, respectively. The corresponding stellar masses are 0.372 ± 0.018 M☉, 0.635 ± 0.032 M☉, 0.522 ± 0.028 M☉, 0.626 ± 0.033 M☉, and 0.612 ± 0.034 M☉. All five hosts have supersolar metallicities, providing further support for recent findings that, like for solar-type stars, close-in giant planets are preferentially found around metal-rich M-dwarf host stars. Finally, we describe a procedure for accounting for systematic errors in stellar evolution models when those models are included directly in fitting a transiting planet system.

Item Type: Article
Subjects: Oalibrary Press > Physics and Astronomy
Depositing User: Managing Editor
Date Deposited: 11 Nov 2023 05:33
Last Modified: 11 Nov 2023 05:33
URI: http://asian.go4publish.com/id/eprint/3220

Actions (login required)

View Item
View Item