Asymptotic Giant Branch Stars Near the Sun
Abstract
Available red and near-infrared photometry and apparent motions of M, S, and C asymptotic giant branch (AGB) stars in the Bright Star Catalogue are tabulated and discussed. It is shown that the red and near infrared indices normally used for late-type stars are interchangeable except for carbon stars. The M-type giants are variable with visual amplitude greater than 0.05 mag. The reddening-free parameter m2 from Geneva photometry is essentially a temperature parameter for M giants, while the reddening-free parameter d is a sensitive detector of blue stellar companions. The space density of AGB stars near the sun decreases by a factor of 35 in a temperature range 3800 to 3400 K. Two of the S stars near the sun were found to have nearly equal space motions and may be comembers of the Arcturus group.
- Publication:
-
The Astronomical Journal
- Pub Date:
- July 1992
- DOI:
- 10.1086/116239
- Bibcode:
- 1992AJ....104..275E
- Keywords:
-
- Astronomical Catalogs;
- Asymptotic Giant Branch Stars;
- Infrared Photometry;
- Near Infrared Radiation;
- Stellar Luminosity;
- Stellar Spectra;
- Abundance;
- Carbon Stars;
- Globular Clusters;
- Heavy Elements;
- Hydrogen;
- Iron;
- Late Stars;
- M Stars;
- S Stars;
- Astrophysics;
- STARS: GIANT;
- STARS: FUNDAMENTAL PARAMETERS