The Late-Type Stellar Content of NGC 55
Abstract
The authors have completed a photometric survey of the late-type stellar content of the nearby galaxy NGC 55. Using narrow-band filters they have separated C and M stars, and have reached the following conclusions: The distance to NGC 55 is 1.34±0.08 Mpc. The discrepancy between theoretical and observational determinations of the AGB luminosity function is also confirmed in NGC 55. The correlation between C/M number ratio and [Fe/H] is not due to the correlation between metallicity and the temperature of the giant branch alone. The existence of a relation between Nc/LB (the number of carbon stars per unit luminosity) and [Fe/H] is confirmed.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- December 1987
- DOI:
- 10.1086/165808
- Bibcode:
- 1987ApJ...323...79P
- Keywords:
-
- Dwarf Stars;
- Late Stars;
- M Stars;
- Spiral Galaxies;
- Star Distribution;
- Stellar Spectrophotometry;
- Carbon Stars;
- Giant Stars;
- Stellar Color;
- Stellar Temperature;
- Astrophysics;
- GALAXIES: INDIVIDUAL NGC NUMBER: NGC 55;
- GALAXIES: STELLAR CONTENT;
- STARS: CARBON;
- STARS: LATE-TYPE