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Properties of RR Lyrae stars in the inner regions of the Large Magellanic Cloud

Borrisova, J; Minniti, Dante; Rejkuba, Marina; Alves, David R; Cook, Kem H; Freeman, Kenneth

Description

We present the radial velocities, metallicities and the K-band magnitudes of 74 RR Lyrae stars in the inner regions of the LMC. The intermediate resolution spectra and infrared images were obtained with FORS1 at the ESO VLT and with the SOFI infrared imager at the ESO NTT. The best 43 RR Lyrae with measured velocities yield an observed velocity dispersion of σ = 61 ± 7km s-1. We obtain a true LMC RR Lyrae velocity dispersion of σ = 53 km s-1, which is higher than the velocity dispersion of any...[Show more]

CollectionsANU Research Publications
Date published: 2004
Type: Journal article
URI: http://hdl.handle.net/1885/80689
Source: Astronomy and Astrophysics
DOI: 10.1051/0004-6361:20034494

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