SIMBAD references

2006MNRAS.369..791F - Mon. Not. R. Astron. Soc., 369, 791-797 (2006/June-3)

Carbon-rich Mira variables: kinematics and absolute magnitudes.


Abstract (from CDS):

The kinematics of Galactic C-Miras are discussed on the basis of the bolometric magnitudes and radial velocities of Papers I and II of this series. Differential Galactic rotation is used to derive a zero-point for the bolometric period-luminosity relation which is in satisfactory agreement with that inferred from the Large Magellanic Cloud (LMC) C-Miras. We find for the Galactic Miras, Mbol= -2.54 logP + 2.06(±0.24), where the slope is taken from the LMC. The mean velocity dispersion, together with the data of Nordström et al. and the Padova models, leads to a mean age for our sample of C-Miras of 1.8±0.4Gyr and a mean initial mass of 1.8±0.2 M. Evidence for a variation of velocity dispersion with period is found, indicating a dependence of period on age and initial mass, the longer period stars being younger. We discuss the relation between the O- and C-Miras and also their relative numbers in different systems.

Abstract Copyright: 2006 The Authors. Journal compilation © 2006 RAS

Journal keyword(s): stars: AGB and post-AGB - stars: carbon - stars: distances - stars: variable: other - Galaxy: fundamental parameters - Galaxy: kinematics and dynamics

Simbad objects: 23

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