VARIABLE STARS IN LARGE MAGELLANIC CLOUD GLOBULAR CLUSTERS. I. NGC 1466

Journal Article · Sat Oct 15 04:00:00 EDT 2011 · Astronomical Journal (New York, N.Y. Online)

DOI:https://doi.org/10.1088/0004-6256/142/4/107· OSTI ID:21582844

Kuehn, Charles A; Smith, Horace A; De Lee, Nathan ^[1]; Catelan, Marcio ^[2]; Pritzl, Barton J ^[3]; Borissova, Jura ^[4]

---

1. Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824 (United States)
2. Departamento de Astronomia y Astrofisica, Pontificia Universidad Catolica de Chile, Santiago (Chile)
3. Department of Physics and Astronomy, University of Wisconsin Oskosh, Oshkosh, WI 54901 (United States)
4. Departamento de Fisica y Astronomia, Falcultad de Ciencias, Universidad de Valparaiso, Valparaiso (Chile)

This is the first in a series of papers studying the variable stars in Large Magellanic Cloud globular clusters. The primary goal of this series is to better understand how the RR Lyrae stars in Oosterhoff-intermediate systems compare to those in Oosterhoff I/II systems. In this paper, we present the results of our new time-series BV photometric study of NGC 1466. A total of 62 variables were identified in the cluster, of which 16 are new discoveries. The variables include 30 RRab stars, 11 RRc stars, 8 RRd stars, 1 candidate RR Lyrae, 2 long-period variables, 1 potential anomalous Cepheid, and 9 variables of undetermined classification. We present photometric parameters for these variables. For the RR Lyrae stars physical properties derived from Fourier analysis of their light curves are presented. The RR Lyrae stars were used to determine a reddening-corrected distance modulus of (m - M){sub 0} = 18.43 {+-} 0.15. We discuss several different indicators of Oosterhoff type and find NGC 1466 to be an Oosterhoff-intermediate object.

• OSTI ID: 21582844
• Journal Information: Astronomical Journal (New York, N.Y. Online), Journal Name: Astronomical Journal (New York, N.Y. Online) Journal Issue: 4 Vol. 142; ISSN 1538-3881
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
79 ASTRONOMY AND ASTROPHYSICS
CLASSIFICATION
ELECTROMAGNETIC RADIATION
FOURIER ANALYSIS
GALAXIES
MAGELLANIC CLOUDS
RADIATIONS
STARS
VARIABLE STARS
VISIBLE RADIATION