The late-type stellar content of NGC 55

Details The late-type stellar content of NGC 55 The late-type stellar content of NGC 55

Dec 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...323...79p&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 323, Dec. 1, 1987, p. 79-90. NSERC-supported research.

Astronomy and Astrophysics

Astrophysics

59

Dwarf Stars, Late Stars, M Stars, Spiral Galaxies, Star Distribution, Stellar Spectrophotometry, Carbon Stars, Giant Stars, Stellar Color, Stellar Temperature

Scientific paper

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.

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