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1995A&A...304..365C - Astronomy and Astrophysics, volume 304365-368 (1995/12-2)
"Vertical" horizontal branches and the age of the dwarf spheroidal galaxy Leo I.
CAPUTO F., CASTELLANI V. and DEGL'INNOCENTI S.
Abstract (from CDS):
We show that the observed spread in magnitude of He-burning stars clumping along the red giant branch in not-too-old metal poor stellar clusters can be used to get an upper limit for the cluster age. As a result we find that the dwarf spheroidal galaxy Leo I appears even younger than previously suggested, with an age lower or of the order of 2.0Gyr. Firmer conclusions will be reached when detecting the cluster main sequence turn-off which is expected in the range of V=24-24.3mag, depending on the actual cluster age.
Abstract Copyright: ∼
Journal keyword(s): stars: evolution - stars: horizontal branch - galaxies: individual: Leo I - galaxies: evolution - galaxies: stellar content
Simbad objects: 1
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