SIMBAD references

2021MNRAS.506.3669P - Mon. Not. R. Astron. Soc., 506, 3669-3677 (2021/September-3)

The frequency by mass of Galactic carbon stars inferred from Gaia measurements of star cluster members.

PAL T. and WORTHEY G.

Abstract (from CDS):

We investigate the frequency of occurrence of Galactic carbon stars as a function of progenitor mass using Gaia data. Small number statistics limit fidelity, but C-star frequency agrees with that observed in the Magellanic Clouds (MCs) down to m ≃ 1.67 M☉. At m ≃ 1.38 M☉, the frequency rises by a factor of three even though the frequency appears to drop to zero for the MCs. In fact this is due to a lack of clusters at the key age range in the MCs. At m ≃ 1.24 M☉ and below, no C-stars are observed, corresponding to ages older than 4 Gyr. Within uncertainties, C-star frequency in M 31 is consistent with that of the Galaxy and the MCs. We find an ambiguous C-star candidate at ∼7 M☉.

Abstract Copyright: © 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): stars: carbon - stars: chemically peculiar - Hertzsprung-Russell and colour-magnitude diagrams - open clusters and associations: general - Galaxy: stellar content

Simbad objects: 36

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