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Issue A&A
Volume 442, Number 1, October IV 2005
Page(s) 381 - 384
Section Celestial mechanics and astrometry
DOI http://dx.doi.org/10.1051/0004-6361:20053230



A&A 442, 381-384 (2005)
DOI: 10.1051/0004-6361:20053230

Proper identification of RR Lyrae stars brighter than 12.5 mag

G. Maintz

Sternwarte der Universität Bonn, Auf dem Hügel 71, 53121 Bonn, Germany
    e-mail: gmaintz@astro.uni-bonn.de

(Received 12 April 2005 / Accepted 13 July 2005)

Abstract
RR Lyrae stars are of great importance for investigations of Galactic structure. However, a complete compendium of all RR-Lyraes in the solar neighbourhood with accurate classifications and coordinates does not exist to this day. Here we present a catalogue of 561 local RR-Lyrae stars ( $V_{\rm max} \leq 12.5$ mag) according to the magnitudes given in the Combined General Catalogue of Variable Stars (GCVS) and 16 fainter ones. The Tycho2 catalogue contains $\simeq$100 RR Lyr stars. However, many objects have inaccurate coordinates in the GCVS, the primary source of variable star information, so that a reliable cross-identification is difficult. We identified RR Lyrae from both catalogues based on an intensive literature search. In dubious cases we carried out photometry of fields to identify the variable. Mennessier & Colome (2002, A&A, 390, 173) have published a paper with Tyc2-GCVS identifications, but we found that many of their identifications are wrong.


Key words: astrometry -- stars: variables: RR Lyr -- catalogs

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© ESO 2005

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