Confirmation of four hot Jupiters detected by TESS using follow-up spectroscopy from MaHPS at Wendelstein together with NEID and TRES

¹ Universitäts-Sternwarte München, Fakultät für Physik, Ludwig- Maximilians-Universität München, Scheinerstr. 1, 81679 München, Germany
² Max Planck Institute for Extraterrestrial Physics, Giessenbachstrasse 1, 85748 Garching, Germany
³ Center for Astrophysics | Harvard & Smithsonian, 60 Garden St, Cambridge, MA 02138, USA
⁴ Department of Astrophysical Sciences, Princeton University, 4 Ivy Lane, Princeton, NJ 08544, USA
⁵ Center for Astrophysics | Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA
⁶ Department of Physics and Astronomy, Vanderbilt University, Nashville, TN 37235, USA
⁷ Acton Sky Portal private observatory, Acton, MA, USA
⁸ Instituto de Astrofísica de Canarias (IAC), 38205 La Laguna, Tenerife, Spain
⁹ Departamento de Astrofísica, Universidad de La Laguna (ULL), 38206, La Laguna, Tenerife, Spain
¹⁰ Center for Astrophysics | Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA
¹¹ Department of Astronomy, The Ohio State University, Columbus, OH 43210, USA
¹² Thüringer Landessternwarte Tautenburg, 07778 Tautenburg, Germany
¹³ Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
¹⁴ Sternberg Astronomical Institute, Lomonosov Moscow State University, Universitetsky prospekt, 13, Moscow 119992, Russia
¹⁵ Howard Community College, 10901 Little Patuxent Pkwy, Columbia, MD 21044, USA
¹⁶ Department of Astronomy, University of California Berkeley, Berkeley, CA 94720, USA
¹⁷ Phil Evans, El Sauce Observatory, Coquimbo Province, Chile
¹⁸ Departamento de Astronomía y Astrofísica, Universidad de Valencia, 46100 Burjassot, Valencia, Spain
¹⁹ Observatorio Astronómico, Universidad de Valencia, 46980 Paterna, Valencia, Spain
²⁰ Komaba Institute for Science, The University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo 153-8902, Japan
²¹ Department of Astronomy, California Institute of Technology, Pasadena, CA 91125, USA
²² Grand Pra Observatory, Switzerland
²³ Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
²⁴ Department of Multi-Disciplinary Sciences, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo 153-8902, Japan
²⁵ NASA Ames Research Center, Moffett Field, CA 94035, USA
²⁶ Hamilton College, 198 College Hill Rd, Clinton, NY 13323, USA
²⁷ Société Astronomique de France, 3 Rue Beethoven, 75016 Paris, France
²⁸ Astronomical Observatory, University of Siena, 53100 Siena, Italy
²⁹ Villa ’39 Observatory, Landers, CA 92285, USA
³⁰ Astrobiology Center, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
³¹ Wild Boar Remote Observatory, San Casciano in val di Pesa, Firenze, 50026 Italy
³² Silesian University of Technology, Akademicka 2A, 44–100, Gliwice, Poland
³³ NASA Goddard Space Flight Center, 8800 Greenbelt Road, Greenbelt, MD 20771, USA
³⁴ Privat Observatory Herges-Hallenberg, Steinbach-Hallenberg, Germany
³⁵ Department of Astronomy, University of Maryland, College Park, College Park, MD 20742 USA
³⁶ Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
³⁷ Department of Aeronautics and Astronautics, MIT, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
³⁸ SETI Institute, Mountain View, CA 94043 USA/NASA
³⁹ Kotizarovci Observatory, Sarsoni 90, 51216 Viskovo, Croatia
⁴⁰ Hazelwood Observatory, Australia
⁴¹ Planetary Discoveries in Fredericksburg, VA 22405, USA
⁴² Department of Physics, Engineering and Astronomy, Stephen F. Austin State University, 1936 North St, Nacogdoches, TX 75962, USA

^★ Corresponding authors; juliana.96@gmx.de

Received: 6 July 2024
Accepted: 24 September 2024

Abstract

We report the confirmation and characterization of four hot Jupiter-type exoplanets initially detected by TESS: TOI-1295 b, TOI-2580 b, TOI-6016 b, and TOI-6130 b. Using observations with the high-resolution echelle spectrograph MaHPS on the 2.1 m telescope at Wendelstein Observatory, together with NEID at Kitt Peak National Observatory and TRES at the Fred Lawrence Whipple Observatory, we confirmed the planetary nature of these four planet candidates. We also performed precise mass measurements. All four planets are found to be hot Jupiters with orbital periods between 2.4 and 4.0 days. The sizes of these planets range from 1.29 to 1.64 Jupiter radii, while their masses range from 0.6 to 1.5 Jupiter masses. Additionally, we investigated whether there are signs of other planets in the systems but have found none. Lastly, we compared the radii of our four objects to the results of an empirical study of radius inflation and see that all four demonstrate a good fit with the current models. These four planets belong to the first array of planets confirmed with MaHPS data, supporting the ability of the spectrograph to detect planets around fainter stars as faint as V = 12.