Semi-Regular Variables in the Solar Neighbourhood
Astrophysics
2009-06-23 v1
Abstract
Period-luminosity sequences have been shown to exist among the Semi-Regular Variables (SRVs) in the Magellanic Clouds (Wood et al, 1999), the Bulge of the Milky Way galaxy (Glass & Schultheis, 2003) and elsewhere. Using modern period and revised Hipparcos parallax data, this paper demonstrates that they also appear among the M-giant SRVs of the Solar Neighbourhood. Their distribution in the K, log P diagram resembles that of Bulge stars more closely than those in the Magellanic Clouds. The prevalence of mass-loss among local M-type SRVs and its dependence on period and spectral sub-type are also discussed. K -- [12], a measure of circumstellar dust emission, increases clearly with V amplitude, M giant sub-type and log P.
Keywords
Cite
@article{arxiv.0704.3150,
title = {Semi-Regular Variables in the Solar Neighbourhood},
author = {I. S. Glass and F. van Leeuwen},
journal= {arXiv preprint arXiv:0704.3150},
year = {2009}
}
Comments
MNRAS (accepted)