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J/A+A/390/173       RR Lyrae GCVS and TYC2 identifiers      (Mennessier+, 2002)

Identification of RR Lyrae stars in the Tycho-2 catalogue. Mennessier M.O., Colome J. <Astron. Astrophys. 390, 173 (2002)> =2002A&A...390..173M
ADC_Keywords: Stars, variable ; Cross identifications Keywords: stars: variables: RR Lyr - catalogs Abstract: The Tycho-2 catalogue (I/259) provides astrometric and photometric data for the 2.5 million brightest stars in the sky. Therefore it can provide much larger samples than the Hipparcos samples used to date in statistical studies. The object of this paper is the cross-identification of Tycho-2 sources and known variable stars of RR Lyrae type. The Tycho-2 data of cross-identified sources are added into the ASTRID specialized database. The present selection almost doubles the size of the sample of RR Lyrae stars with available proper motions. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table4.dat 28 172 GCVS and TYC2 identifiers of the 172 RR Lyrae non-Hipparcos stars identified with a TYC2 source
See also: I/259 : The Tycho-2 Catalogue (Hog+ 2000) II/214 : Combined General Catalogue of Variable Stars (Kholopov+ 1998) Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 12 A12 --- TYC Tycho-2 (<I/259>) number (TYC1-TYC2-TYC3) (1) 14- 23 A10 --- GCVS GCVS (II/214) name
Note (1): The TYC identifier is constructed from the GSC region number (TYC1), the running number within the region (TYC2) and a component identifier (TYC3) which is normally 1. Some non-GSC running numbers were constructed for the first Tycho Catalogue and for Tycho-2. The recommended star designation contains a hyphen between the TYC numbers, e.g. TYC 1-13-1.
History: From electronic version of the journal
(End) James Marcout, Patricia Bauer [CDS] 05-Sep-2002
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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