THE UNUSUAL RR LYRAE POPULATION OF NGC 6101
Journal Article
·
· Astrophysical Journal
- Department of Astronomy, University of Florida, 211 Bryant Space Sciences Center, Gainesville, FL 32611 (United States)
- Departamento de AstronomIa, Universidad de Concepcion Casilla 160-C, Concepcion (Chile)
We use V-band time-series data to analyze the RR Lyrae (RRL) population of the Galactic globular cluster NGC 6101. Using template fitting, we have discovered seven new RRL stars and confirmed 10 candidates. We find unusually long mean periods for the RRL of (P{sub ab} ) = 0.803 days and (P{sub c} ) = 0.393 days, and an atypically high ratio of n(c)/n(ab + c) = 0.82. Based on our derived mean properties of the RRL, NGC 6101 is Oosterhoff type II, consistent with the cluster metallicity but intriguing with respect to its kinematics.
- OSTI ID:
- 21567636
- Journal Information:
- Astrophysical Journal, Journal Name: Astrophysical Journal Journal Issue: 1 Vol. 727; ISSN ASJOAB; ISSN 0004-637X
- Country of Publication:
- United States
- Language:
- English
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