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Evolutionary status of selected post-AGB stars based on Gaia DR3 data

Authors :
Parthasarathy, M.
Kounkel, Marina.
Stassun, Keivan G.
Publication Year :
2022

Abstract

The evolutionary status of 24 post-AGB stars is presented based on Gaia DR3 data. All 24 stars have parallaxes accurate to better than 3 X sigma and have RUWE values less than 1.4. Based on the Gaia DR3 distances the absolute luminosities are derived. For 14 of the stars, the luminosities confirm their post-AGB evolutionary stage. However, V1027 Cyg, which was previously classified as a post-AGB star, is found to have a higher luminosity; thus it may be an evolved, massive, pulsating semi-regular variable star of type G7Ia. For 9 of the stars, the luminosities are lower than 1000 L (sun), indicating that some are post-RGB stars and some are post-HB stars.This paper was completed more than four months ago but there was delay in getting it published.<br />Comment: 1 Figure, 2 Tables, To be submitted

Details

Database :
arXiv
Publication Type :
Report
Accession number :
edsarx.2210.00890
Document Type :
Working Paper