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II/250              Combined General Catalogue of Variable Stars   (Samus+ 2004)

Combined General Catalog of Variable Stars (GCVS4.2, 2004 Ed.) Samus N.N., Durlevich O.V., et al. <Institute of Astronomy of Russian Academy of Sciences and Sternberg State Astronomical Institute of the Moscow State University (2004)> =2004yCat.2250....0S
ADC_Keywords: Stars, variable; Combined data; Supernovae Description: The GCVS is the only reference source on all known variable stars. This version contains all of the electronically-readable version as distributed by the Sternberg Astronomical Institute and Institute of Astronomy (Russian Acad.Sci.), Moscow. It includes the catalog of variable stars, updated and completed with the Name-Lists of Variables Stars Nos.67-77 (see IBVS No.2681,1985; No.3058,1987; No.3323,1989; No.3530,1990; No.3840,1993; No.4140,1995; No.4471,1997; No.4659, 1999; No.4870, 2000; No.5135, 2001; No.5422, 2003) a catalog of suspected variables, a cross-index of variable star names, a catalog of extragalactic variables, and a catalog of supernovae. Introduction: The present improved electronic version of the GCVS4 Volumes I-V, combined with Name-Lists of Variable Stars Nos.67-77 and NSV catalogue is also available from Sternberg Institute via anonymous ftp, where they are stored as zip and text files at ftp://ftp.sai.msu.su/pub/groups/cluster/gcvs/gcvs gcvs_cat.dat is the combined computer-readable version of the GCVS4.2 Vols. I-III (Kholopov et al. 1985-1988) and Name-Lists of Variable Stars Nos.67-77 (1985IBVS.2681....1K, 1987IBVS.3058....1K, 1989IBVS.3323....1K, 1990IBVS.3530....1K, 1993IBVS.3840....1K, 1995IBVS.4140....1K, 1997IBVS.4471....1K, 1999IBVS.4659....1K, 2000IBVS.4870....1K, 2001IBVS.5135....1K, and 2003IBVS.5422....1K) published in the system introduced during the preparation of the 4th GCVS edition; the stars are arranged in the order of their names inside constellations. The total number of designated variable stars has now reached 38624. Errors detected in the printed Volumes I-III and in the Name-Lists were corrected; the file includes also improved positional information, light elements, classifications etc. crossid.dat corresponds to Vol. IV of the GCVS4, and contains all variables, including extragalactic variables, stars from the Name-Lists, and stars suspected of variability since the compilation of the NSV catalog and its supplement. The authors tried to provide as complete lists as possible for the stars identified with the catalogues HD, BD, CoD, CPD, BS, ADS and for the stars with preliminary HV (Harvard Variable) designations; a list of the catalogues mentioned is included in the file "abbrev.txt". The final, Volume V (extragalactic variable stars) consists of two catalogues. The catalogue of variable stars in external galaxies contains 10979 variable stars in 35 stellar systems (including the Magellanic Clouds, the large galaxies in Andromeda and Triangulum, etc., see evs*.dat). The catalogue of extragalactic supernovae includes 984 confirmed or suspected supernovae (see sn*.dat) The file nsv_cat.dat is the merging of a compilation of 14811+11206 stars suspected of variability (II/140) and its supplement (II/219). It is the successor to the "Catalogues of Stars Suspected of Variability" published in 1951 and 1965 by Kukarkin et al. Data contained in the present catalog include positions, magnitudes, variability types, alternate designations, and references to the literature. See also: http://www.sai.msu.su/groups/cluster/gcvs/gcvs/ : the GCVS Group Home Page II/218 : Sternberg Supernova Catalogue (Tsvetkov+ 1998) File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file gcvs_cat.dat 181 38624 The GCVS4.2 Catalog (Vol. I-III) gcvs_rem.dat 94 14441 Remarks on GCVS stars vartype.txt 79 1430 Description of GCVS Variability Types constel.txt 78 192 Numerical Codes for Constellations and Letters crossid.dat 48 119894 Cross-identifications (Vol. IV) abbrev.txt 80 173 Abbreviations of catalogues used in crossid.dat nsv_cat.dat 128 26017 The Suspected Variable stars and Supplement nsv_rem.dat 80 10776 Remarks on NSV (and Supplement) stars evs_cat.dat 160 10979 Extragalactic Variable Stars. Catalogue (Vol. V) evs_rem.dat 80 1936 Extragalactic Variable Stars. Remarks sn_cat.dat 132 984 Extragalactic supernovae. Catalogue sn_rem.dat 80 277 Extragalactic supernovae. Remarks refs.dat 80 21004 References
Byte-by-byte Description of file: gcvs_cat.dat
Bytes Format Units Label Explanations
1- 6 I06 --- VarNum Numeric designation, made from constellation and star names (codes in file "constel.txt") 7 A1 --- m_VarNum Component identification (1) 9- 18 A10 --- GCVS Variable star designation (G1) 19 A1 --- n_GCVS [*] indicates a remark in "gcvs_rem.dat" file 21- 22 I2 h RA1950h ? Hours RA, equinox 1950.0 (2) 23- 24 I2 min RA1950m ? Minutes RA, equinox 1950.0 (2) 25- 28 F4.1 s RA1950s ? Seconds RA, equinox 1950.0 (2) 29 A1 --- DE1950- ? Sign Dec, equinox 1950.0 (2) 30- 31 I2 deg DE1950d ? Degrees Dec, equinox 1950.0 (2) 32- 33 I2 arcmin DE1950m ? Minutes Dec, equinox 1950.0 (2) 34- 35 I2 arcsec DE1950s ? Seconds Dec, equinox 1950.0 (2) 36 A1 --- u_DE1950s [:*] position accuracy flags (G2) 38- 39 I2 h RAh ? Hours RA, equinox J2000.0 (2) 40- 41 I2 min RAm ? Minutes RA, equinox J2000.0 (2) 42- 45 F4.1 s RAs ? Seconds RA, equinox J2000.0 (2) 46 A1 --- DE- Sign Dec, equinox J2000.0 (2) 47- 48 I2 deg DEd ? Degrees Dec, equinox J2000.0 (2) 49- 50 I2 arcmin DEm ? Minutes Dec, equinox J2000.0 (2) 51- 52 I2 arcsec DEs ? Seconds Dec, equinox J2000.0 (2) 53 A1 --- u_DEs [:*] position accuracy flags (G2) 54 A1 --- n_Pos [*] Position computed from B1950 (3) 55- 64 A10 --- VarType Type of variability (see file "vartype.txt") 66 A1 --- l_magMax [<>(] Limit or amplitude symbol on magMax (G3) 67- 72 F6.3 mag magMax ? Magnitude at maximum brightness 73 A1 --- u_magMax Uncertainty flag (:) on magMax 74 A1 --- --- [)] ")" if magMax is an amplitude 76 A1 --- l_magMin [<(] Limit or amplitude symbol on magMin (G3) 78- 83 F6.3 mag magMin ? Minimum magnitude or amplitude 84 A1 --- u_magMin Uncertainty flag (:) on magMin 85- 86 A2 --- n_magMin Alternative photometric system for magMin (G4) 87 A1 --- --- [)] ")" if magMin is an amplitude 89- 90 A2 --- magCode The photometric system for magnitudes (G4) 92-104 F13.5 d Epoch ? Epoch for maximum light, Julian days (G5) 105 A1 --- u_Epoch [:±] Uncertainty flag on Epoch (4) 107-110 A4 --- Year Year of outburst for nova or supernova 111 A1 --- u_Year [:] Uncertainty flag on Year of outburst 113 A1 --- l_Period [<>(] Code for upper or lower limits (5) 114-129 F16.10 d Period ? Period of the variable star 130-132 A3 --- u_Period [*/N)2: ] Uncertainties on Period (6) 134-136 A3 % M-m/D ? Rising time or duration of eclipse (G6) 137 A1 --- u_M-m/D Uncertainty flag (:) on M-m/D 138 A1 --- n_M-m/D [*] Note for eclipsing variable (G6) 140-156 A17 --- SpType MK Spectral type 158-162 A5 --- Ref1 Reference to a study of the star (G7) 164-168 A5 --- Ref2 Reference to a chart or photograph (G7) 170 A1 --- f_GCVS [=N+] "N" if the star does not exist (7) 171-181 A11 --- VarName Alternative name of the variable (G8)
Note (1): designations of components of double/multiple stars : A,B; 1,2,3 ... (tau 1). Usually only one component of the binary is variable, but there exist two cases (CE Cas A,B; EQ Peg A,B) when both components are variable and enter the catalogue as separate lines. Note (2): the position is not listed when the variable is equivalent to another catalogued variable (see column VarName) Note (3): the asterisk (*) means that the coordinates that could not be improved were recalculated from old rough coordinates to the equinox J2000.0 with allowance for precession. Note (4): the following codes are used: ":" are used if the epoch is uncertain; "+" epoch may be later than that reported; "-" epoch may be earlier than that reported. Note (5): ">" or "<" if period is a lower or upper limit, respectively. "(" indicates that the period is the mean cycle time of a U Gem or recurrent nova (a closing bracket exists in u_Period) Note (6): the codes are: "*N" if the period may be a multiple of the quoted value; "/N" if the period may be a fraction of the quoted value; ")" closing bracket of l_Period for U Gem-type or recurrent novae. Note (7): Besides "N", the codes are: "=" if the star is also known under another variable name "+" if the star is in other catalogues (e.g. Hipparcos or Name Lists)
Byte-by-byte Description of file: gcvs_rem.dat
Bytes Format Units Label Explanations
1- 10 A10 --- GCVS Variable star designation 14- 94 A81 --- Text Text of note.
Byte-by-byte Description of file: nsv_cat.dat
Bytes Format Units Label Explanations
1- 5 I05 --- NSV NSV number (above 15000 for the Supplement) 6 A1 --- m_NSV NSV letter suffix (1) 7 A1 --- u_NSV [-] Dubitancy flag if a star's variability seems doubtful or erroneous to the compilers 8 A1 --- n_NSV [*] indicate a remark in file "nsv.rem.dat" 10- 11 I2 h RA1950h ? Hours RA, equinox 1950.0 (2) 12- 13 I2 min RA1950m ? Minutes RA, equinox 1950.0 (2) 14- 17 F4.1 s RA1950s ? Seconds RA, equinox 1950.0 (2) 18 A1 --- DE1950- ? Sign Dec, equinox 1950.0 (2) 19- 20 I2 deg DE1950d ? Degrees Dec, equinox 1950.0 (2) 21- 22 I2 arcmin DE1950m ? Minutes Dec, equinox 1950.0 (2) 23- 24 I2 arcsec DE1950s ? Seconds Dec, equinox 1950.0 (2) 25 A1 --- u_DE1950s [:*] accuracy flags (G2) 27- 28 I2 h RAh ? Hours RA, equinox J2000.0 (2) 29- 30 I2 min RAm ? Minutes RA, equinox J2000.0 (2) 31- 34 F4.1 s RAs ? Seconds RA, equinox J2000.0 (2) 35 A1 --- DE- ? Sign Dec, equinox J2000.0 (2) 36- 37 I2 deg DEd ? Degrees Dec, equinox J2000.0 (2) 38- 39 I2 arcmin DEm ? Minutes Dec, equinox J2000.0 (2) 40- 41 I2 arcsec DEs ? Seconds Dec, equinox J2000.0 (2) 42 A1 --- u_DEs [:*] accuracy flags (G2) 44- 49 A6 --- VarType Type of variability (see file "vartype.txt") 51 A1 --- l_magMax [><(] Limit or amplitude symbol on magMax (G3) 52- 56 F5.2 mag magMax ? Magnitude at maximum brightness (3) 57 A1 --- u_magMax [:] Uncertainty flag on magMax 59 A1 --- f_magMin [(] indicates that magMin is an amplitude 60 A1 --- l_magMin [><] Limit symbol on magMin (G3) 61- 66 F6.3 mag magMin ? Minimum magnitude or amplitude (3) 67 A1 --- u_magMin [st:] Uncertainty or steps on magMin (4) 68 A1 --- n_magMin Photometric system for magMin (G4) 69 A1 --- --- [)] ")" if magMin is an amplitude 71- 72 A2 --- magCode Photometric system for magnitudes (G4) 74- 78 A5 --- Ref1 Reference to a study of the star (G7) 80- 84 A5 --- Ref2 Chart reference (G7) 86-100 A15 --- Desig Designation in paper referenced by Ref1 (5) 102-116 A15 --- SpType Spectral type (6) 117 A1 --- f_NSV [=] for named variables. 118-128 A11 --- VarName Designation in GCVS (G8)
Note (1): The letter "A" is present for one star, NSV 10360A, which is a completely different object from NSV 10360. Note (2): The position is not listed when the variable is equivalent to a GCVS star (see column VarName). Note (3): Magnitudes are reported to hundredths if the observations are photoelectric, to tenths or whole magnitudes if they are not. If only an amplitude has been measured photoelectrically, then the maximum magnitude is generally given to tenths only and the minimum is reported to hundredths. Note (4): "st" indicates that a light amplitude is reported for the minimum and is given in steps (instrumental measure). Note (5): (empty in the NSV Supplement part): identification of the suspected variable in the paper referenced in Ref1. DM numbers are given without prefix, the standard naming convention of "The Henry Draper Catalogue" being used (BD for zones +89 to -22; CD for -23 to -51; CP for -52 to -89). Identifications are sometimes made of coordinates, a 6-digit number consisting of hours, minutes, and seconds (or tenths of a minute) of time and degrees of declination with sign included. An asterisk (*) signifies that a designation is given in the remarks to the published catalog. Note (6): HD spectral types are generally in brackets, e.g. (A0). Some special symbols are used: AF for A-F stars FG for F-G stars KM for K-M stars
Byte-by-byte Description of file: nsv_rem.dat
Bytes Format Units Label Explanations
1- 5 I05 --- NSV NSV number (above 15000 for the Supplement) 6- 80 A75 --- Text Text of remark
Byte-by-byte Description of file: crossid.dat
Bytes Format Units Label Explanations
1- 4 A4 --- Cat Abbreviated name of catalog or list (details in the file "abbrev.txt") 6- 30 A25 --- Seq Star number or name in the respective catalog 33 A1 --- --- [=] 34- 45 A12 --- VarName Designation in GCVS or NSV (G8) 48 A1 --- f_VarName [:?] Flag for doubtful identifications
Byte-by-byte Description of file: evs_cat.dat
Bytes Format Units Label Explanations
1- 7 I07 --- VarNum [890001/1230042] Variable number (1) 9- 20 A12 --- Name Variable star designation (3) 21 A1 --- n_Name [*] indicates a remark in file evs_rem.dat 22- 23 I2 h RAh Right ascension, equinox 1950.0 24- 25 I2 min RAm (minutes) 26- 30 F5.2 s RAs (seconds) 31 A1 --- DE- sign of declination, 1950.0 32- 33 I2 deg DEd Declination, equinox 1950.0 34- 35 I2 arcmin DEm (arc minutes) 36- 39 F4.1 arcsec DEs (arc seconds) 40 A1 --- u_DEs [":*!] accuracy flags on position (G2) 41- 48 A8 --- VarType Type of variability (see file vartype.txt) 49- 53 F5.2 mag magMax ? Magnitude at maximum brightness 54 A1 --- u_magMax Uncertainty flag (:) on magMax 55 A1 --- l_magMin [<(] Limit or amplitude symbol on magMax (G3) 56- 61 F6.3 mag magMin ? Magnitude at minimum brightness or amplitude 62 A1 --- u_magMin Uncertainty flag (:) on magMin 63 A1 --- --- [)] ")" if magMin is an amplitude 64 A1 --- magCode The photometric system for magnitudes (G4) 65- 78 F14.6 d Epoch ? Epoch for maximum light, Julian days (G5) 79 A1 --- u_Epoch Uncertainty flag on Epoch 80 A1 --- l_P [(] if mean cycle time of U Gem-type variable 81- 93 F13.8 d P ? Period (mean for U Gem-type) 94 A1 --- u_P Uncertainty flag (:) on P 95 A1 --- --- [)] for U Gem-type variable 96- 97 I2 % M-m/D ? Rising time or duration of eclipse (G6) 98 A1 --- u_M-m/D Uncertainty flag (:) on M-m/D 99 A1 --- n_M-m/D [*] Note for eclipsing variable (G6) 100-105 A6 --- SpType Spectral type (4) 107-111 A5 --- Ref1 Reference for study of the star (G7) 112-116 A5 --- Ref2 Reference for chart or photograph (G7) 118-131 A14 --- Desig1 designation in paper Ref1 132-143 A12 --- Desig2 designation in paper Ref2 144-152 A9 --- VarName Designation in GCVS (G8) 154-155 A2 --- nonMem [n: ] Non-member note (5) 156-159 I4 yr Year ? Year of outburst for novae or supernovae 160 A1 --- u_Year [:] Uncertainty flag on YearNova
Note (1): Number of the variable star. This numbering system is made of a 3-digit number identifying the galaxy, followed by a 4-digit number identifying the variable in the galaxy. The numbering system for galaxies begins with 089, the first 88 codes being reserved for constellations (cf. column "VarNum" in file "gcvs_cat.dat") If in the literature for the considered galaxy there exist several different variable star numbering systems, we have introduced new numbers in the order of increasing right ascension for the equinox 1950.0. But if the variable star numbering system for the galaxy is practically of general use, we have retained it - if necessary, with additional numbers ordered by increasing right ascension. Note (3): Variable star Designation. The name of the variable in the adopted system of variable star designations: name of the galaxy + "V" + variable star No. within the galaxy (see column VarNo) Note (4): If there exist several spectral type determinations for a star, we preferred more recent ones, taking into account reliability of each determination. We converted symbols "d" (dwarfs) and "g" (giants) into luminosity classes V and III. If a nova showed spectral features typical of novae during or after the outburst, a symbol (NOVA) is given in this column. If the spectrum shows features characteristic of U Gem variables, this column contains the symbol (UG). Continuous spectrum is designated "cont", the symbol "e" means emission spectrum, lower case letters "ea", "eb" in this column stand for "e alpha", "e beta". For RR Lyrae stars, spectral types from hydrogen lines are given. A plus sign (+) between two spectral type values means that spectra of two components of a spectroscopic binary are observed. Two spectral type values separated with a minus sign (-) mean the range of spectral type variations in the process of brightness changes. Note (5): Symbols "n" or "n:" for "nonmembers" or "possible nonmembers" of the galaxy in question. For the stars that enter the GCVS vols. I-III (file gcvs_cat.dat) or the NSV catalogue (file "nsv_cat.dat") and are not members of the corresponding galaxy, the present volume gives only the running number, coordinates, the symbol "n", and the GCVS or NSV name.
Byte-by-byte Description of file: evs_rem.dat
Bytes Format Units Label Explanations
1- 12 A12 --- Name Variable star designation 14- 80 A67 --- Text Text of remark
Byte-by-byte Description of file: sn_cat.dat
Bytes Format Units Label Explanations
1- 6 A6 --- SN Supernova designation 7 A1 --- f_SN [-?] Doubtful (?), or rejected (-) SN 8 A1 --- n_SN [*] indicates a remark in file "sn_rem.dat" 10- 19 A10 --- Gal Parent galaxy designation (1) 21- 22 I2 h RAh ? RA 1950 (hours) of Parent galaxy 23- 24 I2 min RAm ? Right Ascension 1950 (minutes) 25- 28 F4.1 s RAs ? Right Ascension 1950 (seconds) 29 A1 --- DE- ? Declination 1950 (sign) 30- 31 I2 deg DEd ? Declination Deg. 1950 of Parent galaxy 32- 33 I2 arcmin DEm ? Declination 1950 (minutes) 34- 35 I2 arcsec DEs ? Declination 1950 (seconds) 36 A1 --- u_DEs [":'] Accuracy flags (G2) 37- 42 A6 --- MType Morphological Type of the parent galaxy 43- 47 F5.2 mag BTmag ? Integrated magnitude of parent galaxy 48 A1 --- u_BTmag Uncertainty flag (:) on BTmag 49 A1 --- n_BTmag [BJV] Band indicator, blank for photographic 51- 58 A8 --- maxDate Date of the SN's maximum or of discovery (2) 60- 64 F5.2 mag magMax ? Magnitude at maximum (light) of SN 65 A1 --- u_magMax Uncertainty flag (:) on magMax 66 A1 --- n_magMax [BJVRIKr] Band indicator (blank=photographic) 67 A1 --- f_magMax [*] if maximum not observed (2) 69- 73 F5.1 arcsec dRA ? Distance of SN from galaxy nucleus (3) 74- 75 A2 --- oRA [NSEW:? ] Orientation of dRA 77- 81 F5.1 arcsec dDE ? Distance of SN from galaxy nucleus (4) 82- 83 A2 --- oDE [NSEW:? ] Orientation of dDE 84- 85 I2 h RASN.h ? Right Ascension 1950 (hours) of SN 86- 87 I2 min RASN.m ? Right Ascension 1950 (minutes) 88- 91 F4.1 s RASN.s ? Right Ascension 1950 (seconds) 92 A1 --- DESN.- ? Declination 1950 (sign) 93- 94 I2 deg DESN.d ? Declination 1950 (degrees) of SN 95- 96 I2 arcmin DESN.m ? Declination 1950 (minutes) 97- 98 I2 arcsec DESN.s ? Declination 1950 (seconds) 99 A1 --- u_DESN.s [":'] accuracy flags on SN position (G2) 100-105 A6 --- SNType SN classification (5) 107-122 A16 --- Discov Name of the SN discoverer (6) 123-127 A5 --- Ref1 Reference for study of the star (G7) 128-132 A5 --- Ref2 Reference for chart or photograph (G7)
Note (1): "N" means NGC catalogue numbers, "I" refers to the IC catalogue, "U" to the UGC catalogue, "M" to the MCG catalogue, "E" to ESO survey lists. "An" means an anonymous galaxy "Intergal" is for cases when the supernova cannot be reliably attributed to a particular galaxy and is considered intergalactic. Note (2): The date of the SN's maximum or of discovery, or of an isolated observation at high brightness. If maxDate or f_magMax contains an asterisk (*), it means that the date and/or the magnitude refer not to the maximum (not covered with observations), but to the EPOCH OF DISCOVERY or to an isolated observation at high brightness. As a rule, information about maxima was not included if it was based on considerable extrapolation. Note (3): In line 393, 1970K, the offset is 0.3E Note (4): In line 732, 1988T, the offset is 0.4N Note (5): Limited to types I (I-A, I-B) and II (II-l, II-pl), with possible indications of peculiarities (pec). Note (6): In case of several discoverers, the name of the first author of the discovery is given followed by "+" symbol. As a rule, information on independent rediscoveries is not presented in the remarks, for the sake of brevity. The abbreviation "BASST" in this column means that the supernova was discovered by the Berkeley Automated Supernova Search Team.
Byte-by-byte Description of file: sn_rem.dat
Bytes Format Units Label Explanations
1- 6 A6 --- SN Supernova designation, repeated if more than 1 line 7 A1 --- n_SN [-?] Doubtful (?), or rejected (-) SN 9- 80 A72 --- Text Text of remarks
Byte-by-byte Description of file: refs.dat
Bytes Format Units Label Explanations
1- 5 A5 --- Ref Reference number (G7) 7- 80 A74 --- Text Text of reference
Global Notes: Note (G1): Designation of Variable stars (GCVS Name). traditional transliterations of Greek letters are used. Lower- and upper-case latin letters must be distinguished (e.g. u Her and U Her). See also the file "constel.txt" which gives details about GCVS names and conversion to numeric values. Note (G2): Accuracy of positions use the following symbols: (") means right ascensions accurate to one second of time and declinations accurate to one arcsecond; (:) means right ascensions accurate to one second of time and declinations accurate to one tenth of an arcminute; (*) means declinations accurate to one arcminute. (') means right ascensions accurate to one minute of time and declinations accurate to one arcminute. (!) indicates that the listed coordinates refer to the galaxy's center since the coordinates of the star itself are unknown (concerns V0474 in the Sculptor system) Note (G3): The symbols are: ">" to indicate a faint limit "<" to indicate a bright limit "(" to indicate a that the value represents an amplitude Note (G4): Code for photometric system. The main codes are p (photographic magnitudes) and V (visual, photovisual, or Johnson's V). Several stars from the 68th Name-List have in these positions "1." designating the 1.04 µm band of the system introduced by G.W.Lockwood. The designations u,v,b,y refer to the Stroemgren system. The symbols "Ic" and "Rc" mean magnitudes in Cousins' I system. "g" designates magnitudes in the system of Thuan and Gunn; "T" stands for broad-band Tycho magnitudes formed from B and V measurements; "r" are red magnitudes not tied to a particular system. An asterisk in the corresponding position means a measurement in white light. Note (G5): Epochs are given for minimum light for all eclipsing and ellipsoidal variables, as well as for RV Tau and RS CVn types, and for maximum for all other types. This rule may occasionally be broken as explained only in the remarks to the catalog. Note (G6): (M-m) or (D) values help to define the shape of the light curve, expressed as a percentage of the period of the variable: -- duration of the eclipse (D) for eclipsing binaries; -- duration of the rising time (m-M) for intrinsic variables. An asterisk (*) in the column "n_M-m/D" means, for an eclipsing variable, that the duration of the constant brightness phase in minimum (d) for this star is equal to zero. Note (G7): All references are detailed in the file "refs.dat". Numeric references are from Vol. I of GCVS (range 00002-09148), Vol. II (range 09149-09558), Vol. III (range 09559-10200), or from the Name-Lists (range 67001-77229). References from Vol. V (extragalactic variables) start by the letter "V", and references to the Suspected variables start by "N" (first part) or "S" (supplement). References may also be abbreviation to catalogues (BD, CPD, CoD, GSC, HIP, USNO). Note (G8): an alternative name may contain: - a GCVS name (file "gcvs_dat.dat") - a "Name-list" number if it starts by the two-digit number 67 to 77, and is followed by the four-digit number of the star in the corresponding Name-list. - the designation of an extragalactic variable (GCVS Vol. V, see file "evs_cat.dat"). The name may be followed by an asterisk (*) which means the presence of remarks in Vol. V.
History of the Catalogue: * February 1992: first version of GCVS 4.0 catalogue (Cat. II/214) * July 1996: Version 4.1 (Cat. II/214A) * 30-Jan-2004: Version 4.2 prepared by N.N. Samus [Moscow Inst. Astron.] and O.V. Durlevich [Sternberg] * 29-Dec-2004: Version 4.2 prepared at CDS, with merged NSV catalogues and references (Francois Ochsenbein [CDS])
(End) Francois Ochsenbein [CDS] 29-Dec-2004
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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