Images in the rocket ultraviolet - The stellar population in the central bulge of M31

Details Images in the rocket ultraviolet - The stellar population in the central bulge of M31 Images in the rocket ultraviolet - The stellar population in the central bulge of M31

Nov 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...298l..37b&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 298, Nov. 15, 1985, p. L37-L40.

Astronomy and Astrophysics

Astronomy

45

Andromeda Galaxy, Galactic Bulge, Rocket-Borne Instruments, Ultraviolet Photometry, Asymptotic Giant Branch Stars, Late Stars, Local Group (Astronomy), Stellar Mass Ejection

Scientific paper

Imagery of the bulge of M31 obtained with a rocket-borne telescope in two broad bands centered at 1460 A and 2380 A is discussed. The UV spatial profiles over a region about 200 arcsec wide are identical with those at visible wavelengths. The absence of detectable point sources indicates that main-sequence stars hotter than B0 V are not present in the bulge. It is suggested that the far-UV flux in old stellar populations originates in post-AGB stars. The UV flux from such stars is extremely sensitive to age and the physics of their previous mass loss.

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