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Distances of Dwarf Carbon Stars
- Publication Year :
- 2018
-
Abstract
- Parallaxes are presented for a sample of 20 nearby dwarf carbon stars. The inferred luminosities cover almost two orders of magnitude. Their absolute magnitudes and tangential velocities confirm prior expectations that some originate in the Galactic disk, although more than half of this sample are halo stars. Three stars are found to be astrometric binaries, and orbital elements are determined; their semimajor axes are 1 -- 3 AU, consistent with the size of an AGB mass-transfer donor star.<br />Comment: 9 pages, 5 figures, accepted by Astronomical Journal
- Subjects :
- Astrophysics - Solar and Stellar Astrophysics
Subjects
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.1804.09824
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.3847/1538-3881/aac100