Hostname: page-component-5c6d5d7d68-lvtdw Total loading time: 0 Render date: 2024-08-18T10:40:55.275Z Has data issue: false hasContentIssue false
  • English
  • Français

AGAPEROS Variables in the LMC

Published online by Cambridge University Press:  12 April 2016

M. Schultheis ,
T. Lebzelter  and
A.L. Melchior
M. Schultheis
Affiliation:
Institut d’Astrophysique de Paris, France
T. Lebzelter
Affiliation:
Institut d’Astrophysique de Paris, France
A.L. Melchior
Affiliation:
Observatoire de Paris, DEMIRM, Paris, France

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

In this work, we present preliminary results based on an LMC Bar sample (AGAPEROS) of ⷍ 400 variable stars combined with near-Infared photometry (DENIS). About 50% of our objects are semiregular Variables (SRVs) while 20% are regular Variables with a period range from 30d up to 600d. A second period is present in ∼ 40% of the SRVs. We find a large fraction of regular variables with P < 100d which could be SRVs undergoing a phase of periodic variability. The Period-Colour relation (log P versus I – J), unstudied so far on the LMC, differs from the one found in the Galactic bulge: an effect of metallicity?

Type
Part 1.5. General Aspects
Information
International Astronomical Union Colloquium , Volume 185: Radial and Nonradial Pulsations as Probes of Stellar Physics , 2002 , pp. 164 - 165
Copyright
Copyright © Astronomical Society of the Pacific 2002

References

Arnaud, M., et al. 1994, Exp. Astron., 4, 265 CrossRefGoogle Scholar
Lebzelter, T. 1999, A&A, 351, 644 Google Scholar
Melchior, A.L., et al. 1999, A&AS, 134, 377 Google Scholar
Melchior, A.L., Hughes, S.M.G., & Guibert, J. 2000, A&AS, 145, 11 Google Scholar
Schultheis, M.& Glass, I.S. 2001, MNRAS, in pressGoogle Scholar
Wood, P.R. 2000, PASA, 17, 18 CrossRefGoogle Scholar