Galactic-latitude distribution of bulge M giants at L = 0 deg

Abstract

view Abstract Citations (52) References (48) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Galactic-Latitude Distribution of Bulge M Giants at l=0 Degrees Blanco, V. M. Abstract Starcounts of galactic bulge M giants later than subclasses M2, M5, and M7 are made in ten clear regions at various galactic latitudes near the l = 0° meridian. The frequency of each group of giants so selected decreases away from the galactic center much more rapidly than expected from a space distribution that satisfies the R1/4 law with the effective radius proposed by de Vaucouleurs and Pence (1978) for the galactic central spheroid, resembling instead what one would expect from disklike space distributions or R1/4 law spheroids with implausible effective radii. The observed decrease in starcounts is interpreted as being caused by a steep radial metallicity gradient in the bulge similar to that in M31 and other galaxies. Publication: The Astronomical Journal Pub Date: May 1988 DOI: 10.1086/114737 Bibcode: 1988AJ.....95.1400B Keywords: Galactic Bulge; Giant Stars; Globular Clusters; M Stars; Metallicity; Milky Way Galaxy; Star Distribution; Galactic Nuclei; Galactic Structure; Spiral Galaxies; Astrophysics; STARS: ABUNDANCES; STARS: SPECTRAL CLASSIFICATION; GALAXIES: THE GALAXY full text sources ADS | data products SIMBAD (1) Related Materials (3) Part 2: 1990ApJ...353..494F Part 3: 1990ApJ...357..453T Part 4: 1991ApJ...378..742T