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

TL;DR

This study confirms four hot Jupiter exoplanets initially detected by TESS using follow-up high-resolution spectroscopy, providing precise mass and radius measurements and validating MaHPS as an effective instrument for faint star planet detection.

Contribution

First confirmation of hot Jupiters using MaHPS spectrograph, demonstrating its capability to detect planets around faint stars and contributing to exoplanet characterization.

Findings

All four planets are hot Jupiters with 2.4-4.0 day periods.

Planet radii range from 1.29 to 1.64 Jupiter radii.

Masses range from 0.6 to 1.5 Jupiter masses.

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 2.1m 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.