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2003•Unpublished venueRequires access

Globular Cluster Distances from RR Lyrae Stars

C. Cacciari, G. Clementini

Open publisher page 68 citations

Abstract

Abstract. The most common methods to derive the distance to globular clusters using RR Lyrae variables are reviewed, with a special attention to those that have experienced significant improvement in the past few years. From the weighted average of these most recent determinations the absolute magnitude of the RR Lyrae stars at [Fe/H] = −1.5 is MV = 0.59±0.03, corresponding to a distance modulus for the LMC (m − M)0 = 18.48 ± 0.05. 1

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What this paper is about

Abstract. The most common methods to derive the distance to globular clusters using RR Lyrae variables are reviewed, with a special attention to those that have experienced significant improvement in the past few years. From the weighted average of these most recent determinations the absolute magnitude of the RR Lyrae stars at [Fe/H] = −1.5 is MV = 0.59±0.03, corresponding to a distance modulus for the LMC (m − M)0 = 18.48 ± 0.05. 1

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Available abstract

Abstract. The most common methods to derive the distance to globular clusters using RR Lyrae variables are reviewed, with a special attention to those that have experienced significant improvement in the past few years. From the weighted average of these most recent determinations the absolute magnitude of the RR Lyrae stars at [Fe/H] = −1.5 is MV = 0.59±0.03, corresponding to a distance modulus for the LMC (m − M)0 = 18.48 ± 0.05. 1

Key concepts: RR Lyrae variable, Globular cluster, Physics, Distance modulus, Astrophysics, Variable star, Apparent magnitude, Stars

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