Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998apjs..118..177k&link_type=abstract
The Astrophysical Journal Supplement Series, Volume 118, Issue 1, pp. 177-199.
Astronomy and Astrophysics
Astronomy
2
Galaxies: Individual: Messier Number: M31, Galaxies: Photometry, Galaxies: Star Cluster, Infrared: Galaxies, Stars: Agb And Post-Agb
Scientific paper
Deep high-resolution JHK images of a 2' x 2' field around the OB association A24 near the 7 kpc spiral arm in M31 were measured to yield photometric data of more than 3000 stars with the faintest magnitude being J = 21.3, H = 20.5, and K = 19.6. The photometric data for the 1037 stars that are brightest in the K band are presented. Judging from the color-magnitude and the two-color diagrams, we find that the majority of the observed stars are AGB stars including large-amplitude variables. They are distributed smoothly over the observed field, and we find no clear evidence of varying extinction over the field for these red stars. The present sample includes bright AGB stars of M_K <= -8 and about 30 young blue objects of (J-H) < 0.75 that are brighter than M_J ~= -6.5.
Kobayashi Naoto
Kodaira Keiichi
Miyazaki Satoshi
Tamura Motohide
Tokunaga Alan
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