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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

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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

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