Gaia DR2 and EDR3 data and evolutionary status of post-AGB stars with high radial velocities
arXiv:2208.12971 · doi:10.1093/pasj/psac074
Abstract
Using the Gaia DR2 and EDR3 data and list of post-AGB candidates, we investigate the parallax, proper motion and binarity for twenty post-AGB stars and candidates having high radial velocities. From their Gaia distances their luminosities and kinematics are derived. The evolutionary status of these stars is discussed from their location on the post-AGB evolutionary tracks. Nine stars are confirmed to be post-AGB stars that have their initial main-sequence mass around one or two solar masses. From their kinematics information, two objects among them are identified to clearly belong to the halo population, suggesting that low-mass. We discuss on the origin and evolutionary status of other objects in the sample of this work with high radial velocities.
18 pages, 2 figures, 3 tables, to appear in PASJ
References in corpus (8)
- Estimating distances from parallaxes. V: Geometric and photogeometric distances to 1.47 billion stars in Gaia Early Data Release 3
- The mass distribution and gravitational potential of the Milky Way
- Pulkovo Compilation of Radial Velocities for 35495 Hipparcos Stars in a Common System
- Parallax Systematics and Photocenter Motions of Benchmark Eclipsing Binaries in Gaia EDR3
- New light on Galactic post-asymptotic giant branch stars. I. First distance catalogue
- Binary central stars of planetary nebulae with long orbits: the radial velocity orbit of BD+33.2642 (PN G052.7+50.7) and the orbital motion of HD112313 (PN LoTr5)
- Luminosities and masses of single Galactic Post-Asymptotic Giant Branch (Post-AGB) stars with distances from EDR3: The revelation of an -process diversity
- A Spectroscopic and Photometric Study of the Metal-Poor, Pulsating, Post-AGB Binary HD 46703