Post-Asymptotic Giant Stars in Gaia DR3
Year: 2024
Type: article
Abstract: The publication of precise parallaxes in Gaia DR3 made it possible to calculate accurateddistances and to revise the derivation of luminosities for post-AGB candidates to discardobjects outside the expected luminosity range.We started by identifying post-AGB stars or possible candidates from the bibliography and,then, searched for their Gaia DR3 counterpart sources. Using the available photometry,interstellar extinction, literature spectroscopically derived temperatures or spectral types,and parallax-based distances, we fitted their Spectral Energy Distributions (SED) and weestimated their luminosities and circumstellar extinctions. When compared to models, luminosity values allowed us to disclose objects which are likely post-AGB stars from othertarget types. Their position on the Hertzsprung-Russell (HR) diagram allows direct com-parison with updated post-AGB evolutionary tracks and an estimation of their masses andevolutionary ages.
Author: Minia, Manteiga
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W6911989436
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