Baade's Window at 2.2 microns - The luminosity function and a comparison with the bulge of M31

Details Baade's Window at 2.2 microns - The luminosity function and a comparison with the bulge of M31 Baade's Window at 2.2 microns - The luminosity function and a comparison with the bulge of M31

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aj....105.2121d&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 105, no. 6, p. 2121-2126, 2369, 2370.

Astronomy and Astrophysics

Astronomy

51

Galactic Bulge, Luminosity, Spiral Galaxies, Giant Stars, M Stars, Sky Surveys (Astronomy)

Scientific paper

We have obtained K-band photometry of about 17,000 stars in a 604 sq arcmin field of Baade's Window. The derived luminosity function is consistent with that obtained from unbiased samples of grism-selected M giants in the same region. There is no evidence that the bulge contains a significant number of stars that are bright at K and missed by grism surveys. We synthesized images of the bulge field as it would appear at the distance of M31 and show that image crowding will produce an artificial enhancement of the bright end of the measured luminosity function. We conclude that the upper part of the luminosity function in M31's bulge may be identical to that in Baade's Window.

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