Period-K magnitude relations of variable stars in the LMC

Details Period-K magnitude relations of variable stars in the LMC Period-K magnitude relations of variable stars in the LMC

May 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aspc..310...50i&link_type=abstract

Variable Stars in the Local Group, IAU Colloquium 193, Proceedings of the conference held 6-11 July, 2003 at Christchurch, New Z

Astronomy and Astrophysics

Astronomy

Scientific paper

We cross-correlated the OGLE-II database with the SIRIUS J H K survey data in the Large Magellanic Cloud (LMC). After eliminating obvious spurious data variables, we determined the pulsation periods for 9681 stars by applying the Phase Dispersion Minimixation (PDM) technique to the OGLE-II data. Based on these data, we studied the period-K magnitude (PK) relations of variable stars in the LMC and found a new sequence. Comparison between the theoretical pulsation model (Wood & Sebo 1996) and observational data suggests that the variable stars on the new sequence are Mira variables pulsating in the first overtone mode.

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