J/PAZh/28/201 General Catalogue of Variable Stars. Vol. 1 (Samus+, 2002)
An electronic version of Volume I of the General Catalogue of Variable Stars with improved coordinates. Samus N.N., Goranskii V.P., Durlevich O.V., Zharova A.V., Kazarovets E.V., Pastukhova E.N., Hazen M.L., Tsvetkova T.M. <Pis'ma Astron. Zh. 28, 201 (2002)> =2002PAZh...28..201S (SIMBAD/NED BibCode) =2002AstL...28..174S
ADC_Keywords: Stars, variable ; Combined data Keywords: stars: variable and peculiar Description: We present a new electronic version of the first volume of the General Catalogue of Variable Stars (GCVS), fourth edition, which contains data on 10558 variable stars in Andromeda - Crux (the constellations are ordered in the Catalog according to the Latin alphabet). This version incorporates the name lists of variable stars from no.67 to no.76 for the same constellations. The main distinctive feature of the new version is that it provides improved equatorial J2000.0 coordinates for 10351 stars (including those for 4592 stars corrected for proper motions). These are based on identifications with positional catalogs using finding charts and on our new measurements. We searched for a number of stars on original plates from the plate collections of several observatories. So far we have failed to determine accurate coordinates for 207 variable stars, because there are no finding charts and because the information for star identification is insufficient. The version also includes a file of remarks to the first GCVS volume and a preliminary version of the file of bibliographic references to the entire fourth edition of the GCVS. Apart from a complete update of the positional information, the new version incorporates all the other corrections that were found to be necessary after the first GCVS volume was published (1985). Introduction: The file vol1.dat ------------------- The main table (vol1.dat) of the new electronic version of volume I of the GCVS contains information on 10558 objects (not counting the stars that were erroneously named for the second time or proved to be nonexistent) in Andromeda - Crux, which are mostly variable stars of our Galaxy discovered and named before 2001; i.e., it covers the variable stars that were included in the fourth edition of the GCVS and name lists nos. 67 - 76 (for the same constellations). The structure of the main table corresponds to that of the combined table of the GCVS 4th edition and the name lists (Kholopov et al. 1998; see also www.sai.msu.su/groups/cluster/gcvs/gcvs/iii/). The differences between these tables are as follows: (1) Instead of B1950.0 coordinates, we provide new improved equatorial J2000.0 coordinates. (2) The most recent name lists, up to no. 76, were included. (3) We included all the corrections and changes that were found necessary during our work on the GCVS in other columns of the main table, in references, and in remarks. Note that for stars that had no published finding charts but that we identified with the GSC or with the US Naval Observatory (USNO) A1.0/A2.0 catalogs, we now give a symbol of the corresponding catalog (GSC, USNO) as a reference to the finding chart. The main table is presented in the form traditional for the GCVS, i.e., in the order of constellations and variable-star names adopted in the GCVS. The table includes the following information: equatorial J2000.0 coordinates (right ascensions to within 0.1s and declinations to within 1"), variability types, magnitudes at maximum and minimum light, photometric magnitude systems, periods of light variations, durations of brightness rise from minimum to maximum of eclipse durations, spectral types, and bibliography. For the stars from name lists no. 67 - 76 published after the appearance of the GCVS 4th edition, we provide not all columns of the table but only coordinates, variability types, magnitudes, and bibliography; the missing data will be added to the 5th edition of the GCVS. The file vol1_pos.dat --------------------- For 10351 variable stars, our version provides new equatorial J2000.0 coordinates (right ascensions to within 0.01s and declinations to within 0.1"), for 4592 stars with allowance for their proper motions. The table vol1_pos.dat provides positional information based on our identifications with major astrometric catalogs, on published data, or on our new measurements (see below) for 10351 stars of the new version of volume I (including stars of the new name lists in the same constellations). The order of stars in this table is the same as that in the main table. The files rem.txt and ref.txt ----------------------------- The list of remarks to volume I (rem.txt) includes information that supplements the main table for 2167 stars. In contrast to the printed bilingual version of the 4th GCVS edition (Kholopov et al. 1985-1988), all remarks in the file are given only in English and generally correspond to the English text of the remarks in the printed edition. The remarks contain, in particular, information on variable stars in double systems, on period variability, on secondary minima of eclipsing variables, and on proximity to star clusters and nebulae in the sky. For unique variable stars, the remarks give detailed descriptions of the variability pattern. The preliminary version of bibliographic references (ref.txt) for volumes I-III of the 4th edition contains 12979 references to the literature from the main table and remarks. All references in Cyrillic alphabet in the printed version were transliterated into the Latin alphabet in this file. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file vol1.dat 162 10583 New electronic version of volume I of the GCVS4 vol1_pos.dat 77 10353 Positional information for the stars of volume I of the GCVS4 rem.dat 82 3716 List of remarks to volume I refs.dat 306 12998 List of references for volumes I-III vartype.txt 79 1404 Description of variability types
See also: II/250 : Combined General Catalogue of Variable Stars (Samus+ 2004) www.sai.msu.su/groups/cluster/gcvs : GCVS Home Page www.sai.msu.su/groups/cluster/gcvs/gcvs/vol1/ : Vol. 1 Home Page ftp.sai.msu.su/pub/groups/cluster/gcvs/gcvs/vol1/ : Vol. 1 Home Page Byte-by-byte Description of file: vol1.dat
Bytes Format Units Label Explanations
1- 2 I2 --- Constell [1/88] Constellation numeric code 3- 6 I4 --- Number Star number within the constellation 7 A1 --- Component Component identification 9- 18 A10 --- GCVS Variable star designation 19 A1 --- n_GCVS [*] Notes in rem.dat file 21- 22 I2 h RAh ? Hours RA, equinox J2000.0 23- 24 I2 min RAm ? Minutes RA, equinox J2000.0 25- 28 F4.1 s RAs ? Seconds RA, equinox J2000.0 29 A1 --- DE- Sign Dec, equinox J2000.0 30- 31 I2 deg DEd ? Degrees Dec, equinox J2000.0 32- 33 I2 arcmin DEm ? Minutes Dec, equinox J2000.0 34- 35 I2 arcsec DEs ? Seconds Dec, equinox J2000.0 36 A1 --- u_DEs *[:*] position accuracy flags 38- 47 A10 --- VarType Type of variability (see file vartype.txt) 49 A1 --- l_magMax [<>(] ">" if magMax is a faint limit "<" if magMax is a bright limit "(" if magMax is an amplitude 50- 55 F6.3 mag magMax ? Magnitude at maximum brightness 56 A1 --- u_magMax Uncertainty flag (:) on magMax 59 A1 --- l_magMin [<(] "<" if magMin is a bright limit "(" if magMin is an amplitude 60- 65 F6.3 mag magMin ? Minimum magnitude or amplitude 66 A1 --- u_magMin Uncertainty flag (:) on magMin 67- 68 A2 --- n_magMin Alternative photometric system for magMin 69 A1 --- f_magMin [)] ")" if magMin is an amplitude 71- 72 A2 --- magCode The photometric system for magnitudes 74- 84 F11.5 d Epoch ? Epoch for maximum light, Julian days 85 A1 --- q_Epoch [:±] Quality flag on Epoch 87- 90 A4 --- YearNova Year of outburst for nova or supernova 91 A1 --- q_YearNova [:] Quality flag on Year of outburst 93 A1 --- l_Period [<>(] Code for upper or lower limits 94-109 F16.10 d Period ? Period of the variable star 110 A1 --- u_Period Uncertainty flag (:) on Period 111-112 A2 --- n_Period [*/N) ] 114-116 A3 % M-m/D Rising time (M-m) or duration of eclipse (D) 117 A1 --- u_M-m/D Uncertainty flag (:) on M-m/D 118 A1 --- n_M-m/D [*] Note for eclipsing variable 120-136 A17 --- SpType Spectral type 138-142 A5 --- ref(1) Reference to a study of the star in refs.dat 144-148 A5 --- ref(2) Reference to a chart or photograph in refs.dat 150-161 A12 --- Exists Cases of non-existence of the variable etc. 162 A1 --- --- [|]
Note on u_DEs: Position accuracy flags: (*) - So far we have failed to determine accurate coordinates for 207 variable stars, because there are no finding charts and because the information for star identification is insufficient. The coordinates that could not be improved were recalculated from old rough coordinates to the equinox J2000.0 with allowance for precession. (:) - A flag indicating that the coordinates are actually rougher than the new accuracy standard adopted in the table vol1_pos.dat (see below)
Byte-by-byte Description of file: rem.dat
Bytes Format Units Label Explanations
1- 12 A12 --- GCVS *Variable star designation 14- 82 A69 --- Text Text of remark
Note on GCVS: When more than one line is required, this field is repeated.
Byte-by-byte Description of file: refs.dat
Bytes Format Units Label Explanations
1- 5 A5 --- Ref Reference number 7-306 A300 --- Text Text of the reference
Byte-by-byte Description of file: vol1_pos.dat
Bytes Format Units Label Explanations
1- 2 I2 --- Constell [1/88] Constellation numeric code 3- 6 I4 --- Number Star number within the constellation 7 A1 --- Component Component identification 9- 18 A10 --- GCVS Variable star designation 20- 21 I2 h RAh Hours RA, equinox J2000.0 22- 23 I2 min RAm Minutes RA, equinox J2000.0 24- 28 F5.2 s RAs Seconds RA, equinox J2000.0 30 A1 --- DE- Sign Dec, equinox J2000.0 31- 32 I2 deg DEd Degrees Dec, equinox J2000.0 33- 34 I2 arcmin DEm Minutes Dec, equinox J2000.0 35- 38 F4.1 arcsec DEs Seconds Dec, equinox J2000.0 39 A1 --- u_DEs *[:] position accuracy flag 41- 46 F6.3 arcsec/yr PMa ? Proper motion RA 48- 53 F6.3 arcsec/yr PMd ? Proper motion DE 55- 62 F8.3 yr Epoch *? Epoch 64 A1 --- u_Ident *[?] Uncertainty flag on identification 66- 77 A12 --- Ident *The source of astrometric data
Note on u_DEs: Position accuracy flag: (:) - indicating that the coordinates are actually rougher than the new accuracy standard adopted in the catalog, because we failed to determine better coordinates and to find them in source catalogs or in publications. In comparatively numerous cases, such coordinates were obtained by transforming B1950.0 coordinates from the IRAS Point Sorce Catalog (see below). Note on Epoch: Epoch of the given coordinates. No epoch is provided when using the coordinates from the literature if the epoch was no specified in the publication and cold not be established; Note on u_Ident: Flag (?) on identification - the variable star's identification with the source catalog is uncertain; Note on Ident: The source of astrometric data: A brief designation of the source of astrometric data. In several cases, the catalog designation is followed by the symbol "+pm"; it implies that the position for a certain epoch was taken from the catalog and reduced to the epoch 2000.0 using information on the star's proper motion from a different source. Below, we give a list of the major catalogs and other data sources used, roughly in the order of our preference in identifying variable stars (see also the description of the catalogs provided for A.A. Volchkov's visualization code we used at www.simfov.ru). Hip - The Hipparcos Catalogue (ESA 1997), Cat. I/239 Tyc2 - The Tycho Catalogue (Hog et al., 2000, Cat. I/259). In isolated instances where the star is absent in the second Tycho catalogue but is present in the first catalogue (ESA 1997, Cat. I/239), the source is indicated as Tyc1. PPM - The Positions and Proper Motions (Roser et al. 1991-1993, PPM North, Cat. I/146, PPM south, Cat. I/193). NPM - The Lick Northern Proper Motion Program (Klemola et al. 1987, Cat. I/199). AC - The Four-Million Star Catalog (see Gulyaev and Nesterov 1992). ACT - The ACT Reference Catalog (Urban et al., 1997, Cat. I/246). GSC - The Guide Star Catalog (Lasker et al., 1990, Cat. I/220). The symbol "ns" accompanying a GSC reference implies that the entry is marked as a nonstellar object in the cited catalog. GSC 2.2 - The Guide Star Catalog, Version 2.2.01, 2001, Space Telescope Science, Institute and Osservatorio Astronomico di Torino. A2.0 - A Catalog of Astrometric Standards (Monet et al., 1998, Cat. I/252). There are rare cases where the star could be found only in the previous version of the catalog (Cat. I/243); they are marked as A1.0. IRAS - The Infrared Astronomical Satellite Catalogue of Point Sources (Neugebauer et al., 1988, Cat. II/125). We used it only when it was impossible to identify a star with positional catalogs or to find a star at optical wavelengths and independently measure its coordinates. GCVS AUTHORS - For some 200 stars (1.8% of all the stars in the new version), we measured their coordinates using Digitized Sky Survey images, plates from various collections, or other images. As a rule, we used A2.0 catalog stars as the reference stars in our measurements using the Digitized Sky Survey. The rectangular coordinates of stars were measured by an eye-pointing of the cursor at their photometric centers in commercially available image processing applications with a large magnification. The measurements were reduced by Turner's linear method. The accuracy of our measurements was typically about 0.5" both in right ascension and in declination. LITERATURE - The coordinates taken from current astronomical periodicals.
History: Copied at www.sai.msu.su/groups/cluster/gcvs Acknowledgments: We are grateful to A.A. Volchkov and J. Manek for providing us with the necessary software. We wish to thank S.V. Antipin for assistance, L.N. Berdnikov for providing unpublished finding charts for several southern Cepheids, C. Lopez (Argentina), N.T. Ashimbaeva, and G.V. Romanova for making their results available to us prior to their publication. We also wish to thank the researchers, primarily D. Williams (USA), who helped us to identify the "lost" variable stars using plates of other observatories. This study was supported in part by the Russian Foundation for Basic Research (project no. 99-02-16333), the Program of Support for Leading Scientific Schools of Russia (project no 00-15-96627), the Federal Program "Astronomy', and the American Association of Variable Star Observers. We used the Digitized Sky Survey images provided by the Hubble Space Telescope Science Institute under support from grant NAG W-2166 of the USA Government. References: 1. E. Hog, C. Fabricius, V. V. Makarov, et al., The Tycho-2 Catalogue, CD-ROM (Copenhagen, 2000). 2. P. N. Kholopov, N. N. Samus', M. S. Frolov, V.P. Goranskii, N. A. Gorynya, E. A. Karitskaya, E. V. Kazarovets, N. N. Kireeva, N. P. Kukarkina, N. E. Kurochkin, G. I. Medvedeva, N. B. Perova, A. S. Rastorguev, and S. Yu. Shugarov, General Catalogue of Variable Stars (Nauka, Moscow, 1985-1988), Vols. I-III., 3. P. N. Kholopov, N. N. Samus, N. M. Artiukhina, O. V. Durlevich, M. S. Frolov, V. P. Goranskij, N. A. Gorynya, E. A. Karitskaya, E. V. Kazarovets, N. N. Kireeva, N. P. Kukarkina, N. E. Kurochkin, N. A. Lipunova, G. I. Medvedeva, E. N. Pastukhova, N. B. Perova, A. S. Rastorguev, S. Yu. Shugarov, and T. M. Tsvetkova, Centre de Donnees Astronomiques de Strasbourg, Cat. II/214 (1998). 4. A. R. Klemola, R. B. Hanson, and B. F. Jones, Centre de Donnees Astronomiques de Strasbourg, Cat. <I/199∼ (1987). 5. B. M. Lasker, C. R. Sturch, B. J. McLean, et al., Astron. J. 99, 2019 (1990) Cat. I/220> 6. C. Lopez, private communication (1998). 7. D. Monet, A. Bird, B. Canzian, et al., USNO-A V2.0. A Catalog of Astrometric Standards (US Naval Observatory, Washington, 1998), Cat. I/252 8. G. Neugebauer, R. J. van Duinen, H. J. Habing, et al., IRAS Point Source Catalog (NASA, Washington, 1988), Cat. II/125 9. On the Four-Million Star Catalog, Ed. by A. P. Gulyaev and V. V. Nesterov (Mosk. Gos. Univ., Moscow, 1992). 10. S. Roeser, U. Bastian, L. I. Yagudin, and V. V. Nesterov, PPM Star Catalogue. Positions and Proper Motions (Astronomisches Rechen-Institut, Heidelberg, 1991-1993). PPM North, Cat. I/146, PPM South, Cat. I/193 11. The Hipparcos and Tycho Catalogues (European Space Agency, 1997), ESA SP-1200, Cat. I/239 12. S. E. Urban, T. E. Corbin, and G. L. Wyckoff, The ACT Reference Catalog (US Naval Obs., Washington, 1997), Cat. I/246 13. A. A. Volchkov and O. A. Volchkov, http://www.simfov.ru, 2001.
(End) Patricia Bauer [CDS] 21-Jun-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|