Spitzer Observations of Large Amplitude Variables in the LMC and IC 1613
Astrophysics of Galaxies
2017-09-13 v1 Solar and Stellar Astrophysics
Abstract
The 3.6 and 4.5 micron characteristics of AGB variables in the LMC and IC1613 are discussed. For C-rich Mira variables there is a very clear period-luminosity-colour relation, where the [3.6]-[4.5] colour is associated with the amount of circumstellar material and correlated with the pulsation amplitude. The [4.5] period-luminosity relation for dusty stars is approximately one mag brighter than for their naked counterparts with comparable periods.
Keywords
Cite
@article{arxiv.1702.06797,
title = {Spitzer Observations of Large Amplitude Variables in the LMC and IC 1613},
author = {Patricia A. Whitelock and Mansi Kasliwal and Martha Boyer},
journal= {arXiv preprint arXiv:1702.06797},
year = {2017}
}
Comments
5 pages, 4 figures, to appear in Proceedings of "Wide-Field Variability Surveys: A 21st Century Perspective"