The deep luminosity function of the globular cluster M30
نویسندگان
چکیده
منابع مشابه
On the Evolution of the Globular Cluster Luminosity Function :
We consider the observational signature of the dynamical eeects on the lumi-nosity function of globular clusters. For the three best studied systems, in Milky Way, M31, and M87, there is a statistically signiicant diierence between the inner and outer population of globular clusters. In all cases the inner clusters are on average brighter than the outer clusters (0:26 < m 0 < 0:84) and have a s...
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The conversion of the globular cluster luminosity function (GCLF, dN/d logL) to the globular cluster mass function (GCMF, dN/d logM) is addressed. Dissolving globular clusters (GCs) become preferentially depleted in low-mass stars, which have a high mass-to-light ratio. This has been shown to result in a mass-to-light ratio (M/L) that increases with GC luminosity or mass, because more massive G...
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I-band CCD images of two large regions of the Galactic globular cluster NGC 1261 have been used to construct stellar luminosity functions (LF) for 14000 stars in three annuli from 1. ′ 4 from the cluster center to the tidal radius. The LFs extend to M I ∼ 8 and tend to steepen from the inner to the outer annulus, in agreement with the predictions of the multimass King–Michie model that we have ...
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We test whether the peak absolute magnitude MV (TO) of the Globular Cluster Luminosity Function (GCLF) can be used for reliable extragalactic distance determinations. Starting with the luminosity function of the Galactic Globular Clusters listed in Harris catalog, we determine MV (TO) either using current calibrations of the absolute magnitude MV (RR) of RR Lyrae stars as a function of the clus...
متن کاملThe Globular Cluster Luminosity Function as a Distance Indicator : Dynamical
The dynamical evolution of the globular cluster systems in galaxies is predicted, based on the standard dynamical theory normalized to the example of the Milky Way. The major processes varying with the galactocentric distance are the tidal shocks and dynamical friction. Our simple model explains, on a quantitative basis, the observed diierences of the inner and outer populations of globular clu...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 1990
ISSN: 0004-637X,1538-4357
DOI: 10.1086/168418