Journal article
The MACHO Project Large Magellanic Cloud Variable-Star Inventory. IX. Frequency Analysis of the First-Overtone RR Lyrae Stars and the Indication for Nonradial Pulsations
Abstract
More than 1300 variables classified provisionally as first-overtone RR Lyrae pulsators in the MACHO variable-star database of the Large Magellanic Cloud (LMC) have been subjected to standard frequency analysis. Based on the remnant power in the prewhitened spectra, we found 70% of the total population to be monoperiodic. The remaining 30% (411 stars) are classified as one of nine types according to their frequency spectra. Several types of RR …
Authors
Alcock C; Allsman R; Alves DR; Axelrod T; Becker A; Bennett D; Clement C; Cook KH; Drake A; Freeman K
Journal
The Astrophysical Journal, Vol. 542, No. 1, pp. 257–280
Publisher
American Astronomical Society
Publication Date
October 10, 2000
DOI
10.1086/309530
ISSN
0004-637X