Discovery of new TESS pulsating hot subdwarfs

DOI

This work is dedicated to a search for new pulsating hot subdwarfs in TESS photometric data which could have been missed in previous searches. By matching catalogues of hot subdwarfs with TESS targets and using luminosities from Gaia parallaxes, a list of 1389 candidate hot subdwarfs observed by TESS was created. The periodograms of these stars were inspected, and the stars were classified according to variability type. An updated catalogue of all known pulsating hot subdwarfs is presented. A number of probable pulsating binaries have been identified, which might prove useful for verifying the asteroseismic masses. The mean masses of p- and g-mode pulsators are estimated from the stellar parameters. A list of 63 previously unknown pulsating hot subdwarfs observed by TESS is presented. More than half of the stars previously identified as pure p-mode pulsators are found to have frequencies in the g-mode region as well. As a result, hybrid p- and g-mode pulsators occur over the whole instability strip.

Cone search capability for table J/A+A/663/A45/table1 (Stars in Holdsworth et al. (2017MNRAS.466.5020H) classified as pure p-mode pulsators but which have clear g-mode frequency peaks in the TESS photometry)

Cone search capability for table J/A+A/663/A45/tablea1 (Pulsating hot subdwarfs discovered since Holdsworth et al. (2017MNRAS.466.5020H))

Cone search capability for table J/A+A/663/A45/tablea2 (List of 38 newly discovered pulsating sdB stars not marked as pulsators in the Van Grootel et al. (2021A&A...650A.205V, Cat. J/A+A/650/A205) catalogue)

Cone search capability for table J/A+A/663/A45/tablea3 (List of 25 newly discovered TESS pulsating sdB candidates that are not listed in Van Grootel et al. (2021A&A...650A.205V, Cat. J/A+A/650/A205))

Identifier
DOI http://doi.org/10.26093/cds/vizier.36630045
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/A+A/663/A45
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/663/A45
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/663/A45
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/A+A/663/A45
Provenance
Creator Krzesinski J.; Balona L.A.
Publisher CDS
Publication Year 2023
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Interdisciplinary Astronomy; Natural Sciences; Observational Astronomy; Physics; Stellar Astronomy