Work

Spectroscopy of TESS selected hot variable stars

Year: 2026

Type: article

Abstract: We report spectral types for over 300 stars selected as candidate hot subdwarf stars and shown to be variable by data from the Terrestrial Exoplanet Survey Satellite (TESS). Atmospheric parameters determined from low dispersion spectrograms are provided for many of the targets. In our sample, we find 164 sdB stars, 77 sdB binaries, 21 cataclysmic variables, and small numbers of main sequence, white dwarf, sdO, sdOB and intermediate helium rich subdwarf stars. Several stars appear rather peculiar and are discussed in more detail; TIC 360220395, for example, appears to be an old planetary nebula nucleus.

Source: Monthly Notices of the Royal Astronomical Society

DOI: 10.1093/mnras/stag1945

Authors: H L Worters, D Kilkenny, P Németh, A S Baran, R H Østensen

Institutions: South African Astronomical Observatory, University of the Western Cape, Missouri State University, Fukuoka Agriculture and Forestry Research Center

Language: English

Topic: Stellar, planetary, and galactic studies

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $3,046

Funders: National Aeronautics and Space Administration, Grantová Agentura České Republiky