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II/214A Combined General Catalogue of Variable Stars (Kholopov+ 1998)
================================================================================
The Combined General Catalogue of Variable Stars, 4.1 Edition.
General Catalogue of Variable Stars 4th Edition, Volumes I-III,
Kholopov P.N., Samus N.N., Frolov M.S., Goranskij V.P., Gorynya N.A.,
Karitskaya E.A., Kazarovets E.V., Kireeva N.N., Kukarkina N.P.,
Kurochkin N.E., Medvedeva G.I., Pastukhova E.N., Perova N.B.,
Rastorguev A.S., Shugarov S.Yu.
General Catalogue of Variable Stars Volume IV, 4th ed.
The cross-identification tables.
Kholopov P.N., Samus N.N., Durlevich O.V., Kazarovets E.V.,
Kireeva N.N., Tsvetkova T.M.
General Catalogue of Variable Stars, 4rd ed., vol.V.
Extragalactic Variable Stars
Artiukhina N.M., Durlevich O.V., Frolov M.S., Goranskij V.P.,
Gorynya N.A., Karitskaya E.A., Kazarovets E.V., Kholopov P.N.,
Kireeva N.N., Kurochkin N.E., Lipunova N.A., Medvedeva G.I.,
Pastukhova E.N., Samus N.N., Tsvetkova T.M.
<"Kosmosinform", Moscow, (1995)>
New Catalogue of Suspected Variable Stars,
Kukarkin B.V., Kholopov P.N., Artiukhina N.M., Fedorovich V.P.,
Frolov M.S., Goranskij V.P., Gorynya N.A., Karitskaya E.A.,
Kireeva N.N., Kukarkina N.P., Kurochkin N.E., Medvedeva G.I.,
Perova N.B., Ponomareva G.A., Samus N.N., Shugarov S.Yu.
================================================================================
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 seven Name-Lists of
Variables Stars Nos.67-73 (see IBVS No.2681,1985; No.3058,1987;
No.3323,1989; No.3530,1990; No.3840,1993; No.4140,1995; No.4471,1997),
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.67-73, are also
available from Sternberg Institute via anonymous ftp to
ftp.sai.msu.su, /pub/groups/cluster/gcvs... and via
http://www.sai.msu.su/groups/cluster/gcvs/ . The information at
this site is regularly updated (corrections of detected mistakes,
improvements of identifications and coordinates, etc.).
gcvs.dat is the combined computer-readable version of the GCVS4 Vols.
I-III (Kholopov et al. 1985-1988) and Name-Lists of Variable Stars
Nos.67-73 (1985IBVS.2681....1K, 1987IBVS.3058....1K,
1989IBVS.3323....1K, 1990IBVS.3530....1K, 1993IBVS.3840....1K,
1995IBVS.4140....1K and 1997IBVS.4471....1K) published in the system
introduced during the preparation of the 4th GCVS edition. The total
number of designated variable stars has now reached 31918; of them,
3506 stars enter the Name-Lists Nos.67-73. Errors detected in the
printed Volumes I-III and in the Name-Lists were corrected; the file
includes also improved equatorial positions for some variable stars.
crossid.dat contains all variables, including extragalactic variables,
stars from the Name-Lists, and stars suspected of variability since
the compilation of the NSV catalog, ordered by right ascension
(B1950). 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.
As for the other catalogues, their task here was more difficult since
they had to rely upon references to source catalogue names made by
variable star researchers; the tables in the present volume reproduce
the materials used in their work, and incompleteness seems to be
unavoidable. Starting with Name-List No.71, the identifications became
more reliable and complete thanks to special effort of the compilers.
The final, fifth volume contains data for variables in external
galaxies (including the Magellanic Clouds) and for extragalactic
supernovae (see evs*.dat and sn*.dat).
All variables in the present data set are arranged in the order
of their names inside constellations. For Name-list stars, the
information follows the format of the Name-Lists, that is, it
includes only coordinates, the variability type, the range of
brightness variations, and references.
The file nsv.dat is a compilation of 14811 stars suspected of
variability and not finally designated as variables prior to 1980. It
is the successor to the "Catalogues of Stars Suspected of Variability"
published in 1951 and 1965 (Kukarkin et al.). Data contained in the
present catalog include positions, magnitudes, variability types,
alternate designations, and references to the literature. The computer
version of NSV contains principally the same data as in the printed
catalog, but only the data table without the textual material
(bibliography, remarks) is included. Necessary corrections were
introduced, as of June, 1997, and coordinates were improved, compared
to the printed version, for about half of the stars in the catalog.
The Sternberg Institute has started preparation of an electronic
release GCVS 4.2 which will contain improved light elements,
classifications etc. along with sufficiently accurate positional
information. The first approach to this project has resulted in
improved equatorial positions (B1950, J2000) for variable stars in the
constellations of Andromeda, Antlia and Apus including the stars from
the GCVS proper plus the stars from the subsequent Name-lists, with a
new standard of positional accuracy, to 1 second of arc (IAU Inform.
Bull. Var. Stars, in preparation). These positions have been
incorporated in the present data set.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
gcvs.dat 170 31991 Combined GCVS (vols I-III and name lists)
crossid.dat 36 98642 *The Cross-Identifications of Variable Stars
evs_cat.dat 154 10979 Extragalactic Variable Stars. Catalogue
evs_rem.dat 82 1926 Extragalactic Variable Stars. Remarks
evs_ref.dat 80 667 Extragalactic Variable Stars. References
sn_cat.dat 128 984 Extragalactic supernovae. Catalogue
sn_rem.dat 80 277 Extragalactic supernovae. Remarks
sn_ref.dat 80 719 Extragalactic supernovae. References
nl_ref.dat 80 2567 References for name lists
nsv.dat 89 14811 *Suspected variables
vartype.txt 80 918 Description of variability types
--------------------------------------------------------------------------------
Note on crossid.dat: this file is Version 1.2; it replaced version 1.1 on
22 May 1999; further corrections applied on 16-Jun-1999.
Note on nsv.dat: a newer version of this file is available in Cat.
--------------------------------------------------------------------------------
See also:
II/195 : Namelists of variable stars
II/219 : New Suspected Variable Stars Supplement (Kazarovets+ 1999)
ftp://ftp.sai.msu.su/pub/groups/cluster/gcvs : Sternberg files
http://www.sai.msu.su/groups/cluster/gcvs/gcvs/ : GCVS Database
Byte-by-byte Description of file: gcvs.dat
------------------------------------------------------------------------------
Bytes Format Units Label Explanations
------------------------------------------------------------------------------
1- 3 I3 --- Constell [1/88]Constellation numeric code
4- 7 I4 --- Number Star number within the constellation
8 A1 --- Component *Component identification
9- 18 A10 --- GCVS *Variable star designation
19 A1 --- NoteFlag *[*] Notes in published catalog
20- 21 I2 h RAh *? Hours RA, equinox 1950.0
22- 23 I2 min RAm *? Minutes RA, equinox 1950.0
24- 27 F4.1 s RAs *? Seconds RA, equinox 1950.0
28 A1 --- DE- *Sign Dec, equinox 1950.0
29- 30 I2 deg DEd *? Degrees Dec, equinox 1950.0
31- 32 I2 arcmin DEm *? Minutes Dec, equinox 1950.0
33- 34 I2 arcsec DEs *? Seconds Dec, equinox 1950.0
35 A1 --- u_DEs *[:*'] position accuracy flags
36- 45 A10 --- VarType *Type of variability
46 A1 --- l_magMax [<>(] ">" if magMax is a faint limit
"<" if magMax is a bright limit
"(" if magMax is an amplitude
47- 52 F6.3 mag magMax ? Magnitude at maximum brightness
53 A1 --- u_magMax Uncertainty flag (:) on magMax
54 A1 --- f_magMax [)] ")" if magMax is an amplitude
55 A1 --- l_magMin [<(] "<" if magMin is a bright limit
"(" if magMin is an amplitude
57- 62 F6.3 mag magMin ? Minimum magnitude or amplitude
63 A1 --- u_magMin Uncertainty flag (:) on magMin
64 A1 --- n_magMin *Alternative photometric system for magMin
65 A1 --- f_magMin [)] ")" if magMin is an amplitude
66- 67 A2 --- magCode *The photometric system for magnitudes
68- 81 F14.6 d Epoch *? Epoch for maximum light, Julian days
82 A1 --- q_Epoch *[:+-] Quality flag on Epoch
83- 86 I4 --- YearNova *?Year of outburst for nova
87 A1 --- l_Period *[<>(] Code for upper or lower limits
88-103 F16.10 d Period ? Period of the variable star
104 A1 --- u_Period Uncertainty flag (:) on Period
105-107 A3 --- n_Period *[*/N) ] Uncertainty notes on Period
108-110 A3 % M-m/D *Rising time (M-m) or duration of eclipse (D)
111 A1 --- u_M-m/D Uncertainty flag (:) on M-m/D
112 A1 --- n_M-m/D *[*] Note for eclipsing variable
113-129 A17 --- SpType Spectral type
130-134 A5 --- Ref1 *Reference to a study of the star
136-140 A5 --- Ref2 *Reference to a chart or photograph
142-155 A14 --- Exists *Cases of non-existence of the variable etc.
156-157 I2 h RA2000h ? Hours RA, equinox 2000.0
158-159 I2 min RA2000m ? Minutes RA, equinox 2000.0
160-163 F4.1 s RA2000s ? Seconds RA, equinox 2000.0
164 A1 --- DE2000- Sign Dec, equinox 2000.0
165-166 I2 deg DE2000d ? Degrees Dec, equinox 2000.0
167-168 I2 arcmin DE2000m ? Minutes Dec, equinox 2000.0
169-170 I2 arcsec DE2000s ? Seconds Dec, equinox 2000.0
-------------------------------------------------------------------------------
Note on Component: 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 on GCVS: traditional transliterations of greek letters
are used. Lower- and upper-case latin letters must be distinguished
(e.g. u Her and U Her).
Note on NoteFlag: see the document by Kholopov et al. (1985-1988).
Note on RAh, RAm, RAs, DE-, DEd, DEm, DEs:
the position is not listed when the variable is equivalent to another
catalogued variable ("=" in column Exists, byte 142).
Note on u_DEs:
the real coordinates accuracy uses the symbols:
(:) 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.
Note on VarType: type of variability.
The system of variable star classification corresponds to the GCVS4,
with six additions (ZZO, AM, R, BE, LBV, BLBOO) introduced in the
Name-Lists 67- 72 and in the GCVS vol.V (see file "vartype.txt").
Note on n_magMin: Code for alternative photometric system.
Field is non-blank if magMin is a magnitude or amplitude given in a
system other than that indicated by magCode. An asterisk in the
corresponding position means the amplitude measured in white light.
Note on magCode: the photometric system in which magMin and magMax are
reported (see also Note on n_magMax, n_magMin). The main codes are P
(photographic magnitudes) and V (visual, photovisual, or Johnson's V).
See also the documents by Kholopov et al. (1985-1988) or Warren (1989).
Several stars from the 68th Name-List have in these positions "1."
designating the 1.04 micrometer band of the system introduced by
G.W.Lockwood. The designations u,v,b,y refer to the Stroemgren system.
The symbols "I" and "R" 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.
Note on Epoch, YearNova: 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, but this is explained only in the remarks to the catalog,
which are not available in machine-readable form at this time.
The epochs are Julian dates.
For novae (types N) and supernovae (types SN), the Epoch is completed
by a year of outburst in the YearNova column.
Note on q_Epoch: the following codes are used (see also note on Epoch) :
":" epoch is uncertain.
"+" epoch may be later than that reported;
"-" epoch may be earlier than that reported.
Note on l_Period: the following codes are used:
">" or "<" if period is a lower or upper limit, respectively.
"(": the period is the mean cycle time of a U Gem or recurrent nova
(in this case, there is ")" in n_Period column)
Note on n_Period: the following codes are used:
"*N" if the period may be a multiple of the quoted value;
"/N" if the period may be a fraction of the quoted value;
")" - see the note on l_Period.
Note on M-m/D: this column holds the rising time (M-m) of intrinsic
variables, or the duration of the eclipse (D) for eclipsing binaries.
These values help to define the shape of the light curve. The value is
given in percentage of the period of the star.
Note on n_M-m/D: the "*" indicates that the duration of the light
constancy phase at minimum light (d) for an eclipsing variable is equal
to zero.
Note on Ref1, Ref2:
"00001" - if the main characteristics of the star were determined by
the authors themselves.
"00002" - "09148" - Vol. I GCVS (see Kholopov et al., 1985-1988).
"09149" - "09558" - Vol. II GCVS
"09559" - "10200" - Vol. III GCVS
"V 001" - "V 554" - Vol. V GCVS (see file evs_ref.dat)
"67001" - "73381" - Name-Lists Nos.67-73 (see file nl_ref.dat)
If no chart is available for the variable, but the star is contained in
one of the Durchmusterung catalogs or the Hubble Space Telescope Guide
Star Catalog, the corresponding abbreviation (BD, CPD, CoD, GSC) is
given.
Note on Exists: the following codes are used in column Exists:
"N" in byte 142 if the star does not exist.
"=" in byte 142 appears in three cases.
First, it is used if the variable is equivalent to another catalogued
variable. In such case, after the "=" symbol, the alternative name
of the variable follows, and all necessary information on the star is
to be found under that alternative name.
Second, it is used for all variables of the Name-Lists Nos.67-73, it
is followed by the two-digit number of the Name-list and the four-digit
number of the star in the Name-list, and the information for the star
follows the format of the Name-lists (see above).
Third, the "=" symbol may be followed by the star's name in the GCVS
Vol. V (see the file evs_cat.dat).
This means that the star enters also Vol. V, and the
information of Vol. V makes it possible to improve the data of Vols.
I-III. In this case, the symbol "*" in byte 153 means the presence
of remarks in Vol. V; the symbol(s) "n" or "n:" in bytes 154-155
means that the star is nonmember (possible nonmember) of the galaxy
in question.
------------------------------------------------------------------------------
Byte-by-byte Description of file: crossid.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 A4 --- Cat *Abbreviated name of catalog or list
6- 16 A11 --- Seq Star number or name in the respective catalog
18- 21 A4 --- m_Seq *Component designation
23- 34 A12 --- Vname *Designation in GCVS or NSV
35 A1 --- m_var *Component designation
36 A1 --- IDflag [:] Uncertainty flag on cross-identification.
--------------------------------------------------------------------------------
Note on Cat:
--------------------------------------------------------------------
ADS = R.G.Aitken, 'New General Catalouge of Double Stars', Carnegie
Inst. of Washington Publ. no.417, vols.I, II, 1932
AN = Preliminary designations of variable stars introduced by the
'Astronomische Nachrichten'
AS = P.W. Merrill, C.G.Burwell, 'Additional Stars whose Spectra
have a Bright H Alpha Line', Astrophys. J. 112, 72, 1950
(=1950ApJ...112...72M); see also Astrophys. J. 113, 624, 1951
(=1951ApJ...113..624M)
BAY = Bayer, list of those bright stars having designations by
Greek letters in their constellations
BD = Bonner Durchmusterung, F.W.A. Argelander, Bonner
Sternverzeichniss, 1 bis 4 sektion, Astronomische Beobachtungen
auf der Sternwarte de Kgl. Rhein/ Friedrich-Wilhelms-Unviersiaet
zu Bonn (Catalogs and )
BS (HR) = D. Hoffleit, 'The Bright Star Catalogue', 4th Revised
Ed., Yale University Observatory, New Haven, Conn. USA, 1982
(see catalog )
CoD = Cordoba Durchmusterung, J. M. Thome, Resultados del
Observatorio Nacional Argentino 16 - 18; 21, 1892-1932
(catalog )
CPD = Cape Photographic Durchmusterung, D. GIll and J. C. Kapteyn,
Ann. Cape Obs. 3-5, 1895 - 1900 (catalog )
CRL (AFGL) = Air Force Geophysics Laboratory. Four-Color Infrared
Sky Survey (and supplement): S.D. Price and R.G. Walker -
AFGL-TR-76-028 (Hanscom AFB, MA, Air Force Geophysics Lab.,
Air Force Systems Command, USAF, 1976; S.D. Price and T.L.
Murdock - Air Force Geophysics Laboratory, AFGL-TR-83-0161
(see catalog )
EG = O.J. Eggen, J.L. Greenstein, 'Spectra, Colors, Luminosities,
and Motions of the White Dwarfs', Astrophys. J. 141, 83
(1965ApJ...141...83E); additional stars in Astrophys. J.
142, 925 (1965ApJ...142..925E) and 150, 927
(1967ApJ...150..927E); more stars added by J.L. Greenstein,
see references in McCook and Sion,
Astrophys. J. Suppl. 65, 603 (1987ApJS...65..603M)
FLM = Flamsteed, List of those bright stars having designations by
number in their constellations
G = H.L. Giclas, R. Burnham Jr., and N.G. Thomas, (Large Proper
Motion Stars) - Publications of Lowell Obs., Flagstaff, Arizona,
1971 (Catalogs and )
GD = H.L. Giclas White Dwarfs (Lowell Obs.)
Gl = W. Gliese, 'Catalogue of Nearby Stars', Veroeff. Astron.
Rechen-Inst. Heidelberg nr.22, 1969; W. Gliese, H. Jahreiss,
'Nearby star data published 1969-1978', Astron. Astrophys.
Suppl. 38, 423 (1979A&AS...38..423G); see catalog
HD = Henry Draper Catalogue - A.J. Cannon and E.C. Pickering,
Havard Obs. Ann. 91 - 99, 1918-1924; A. J. Cannon, Harvard Obs.
Ann. 100, 1925 - 1936; see catalog
He = A number of lists of planetary nebulae and emission-line
stars by K. Henize
HII = E. Hertzsprung, 'Catalogue de 3259 Etoiles dans les
Pleiades', Ann. Sterrewacht Leiden, 19, pt. 1A, 1947
HRC = G.H. Herbig, N.K. Rao, 'Second Catalog of Emission-line
Stars of the Orion Population', Astrophys. J. 174, 401
(1972ApJ...174..401H); G.H. Herbig, K.R. Bell,
'Third Catalog of Emission-Line Stars of the Orion Population',
Lick Obs. Bull. no. 1111, 1988 (catalog )
HV = Harvard variables
IRC = G. Neugebauer, R.B. Leighton, 'Two-Micron Sky Survey, A
Preliminary Catalog', NASA SP-3047, 1969; catalog
LH = Lick H Alpha: A number of lists of emission-line stars by
G.H. Herbig
MH = Mount Wilson H-Alpha Stars, see references for MWC and AS
MWC = P.W. Merrill, C.G. Burwell, 'Catalogue and Bibliography of
Stars of Classes B and A Whose Spectra have Bright Hydrogen
Lines', Astrophys. J. 78, 87 (1933ApJ....78...87M)
(Mount Wilson Catalogue); Supplements: Astrophys. J. 98, 153
(1943ApJ....98..153M); 110, 387 (1949ApJ...110..387M)
OH = OH sources designated by their galactic coordinates
Par = A List of Stars in the Region of the Orion Nebula (P.P.
Parenago, Sternberg Inst. Publ. vol. 25, 1954; catalog )
PG = Palomar-Green survey
S = Preliminary designations of variables discovered at Sonneberg
Observatory
SAO = 'Smithsonian Astrophysical Observatory Star Catalog', parts
I-IV, Smithsonian Inst. Washington, 1966 (catalog )
SVS = Soviet Variable Stars (preliminary designations of
Soviet-discovered variables)
VV = Vatican variable stars
WD = G.P. Mc Cook, E.M. Sion, 'Catalog of Spectroscopically
Identified White Dwarfs', Astrophys. J. Suppl. 65, 603
(1987ApJS...65..603M); see catalog .
WR = K.A. van der Hucht et al. 'The Sixth Catalogue of Galactic
Wolf-Rayet Stars, Their Past and Present', Space Sci. Rev. 28,
227, 1981 (Catalog )
--------------------------------------------------------------------
Note on m_Seq, m_Variable:
Designations of components of double/multiple stars:
A,B,C ...; a,b,c ...; 1,2,3 ...; the symbols
P = preceding, F = following, N = northern, S = southern
may also appear.
In the cases of ADS 03201 and ADS 03202 the symbols
k1 and k2 mean kappa 1 and kappa 2, respectively.
Note on Vname: name of the object in the GCVS, its Volume V, or the NSV.
Lower- and upper-case latin letters must be distinguished
(e.g. u Her and U Her).
--------------------------------------------------------------------------------
Byte-by-byte Description of file: evs_cat.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 I3 --- GalNo *[89/123] Galaxy code
4- 7 I4 --- VarNo *Variable star number within the galaxy
9- 20 A12 --- Name *Variable star designation
21 A1 --- RemFlag [*] 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
41- 48 A8 --- VarType *Type of variability
49- 53 F5.2 mag magMax ?Magnitude at maximum brightness
54 A1 --- u_magMax Uncertainty flag (:) on magMax
55 A1 --- l_magMin *[<(] magMin is an upper limit or amplitude
56- 60 F5.2 mag magMin *?Magnitude at minimum brightness, or
amplitude
61 A1 --- u_magMin Uncertainty flag (:) on magMin
62 A1 --- n_magMin *[)] ")" if magMin is an amplitude
63 A1 --- magCode *Code for photometric system
64- 77 F14.6 d Epoch *?Epoch
78 A1 --- u_Epoch Uncertainty flag on Epoch
79 A1 --- l_P *[(] '(' for U Gem
80- 92 F13.8 d P *?Period
93 A1 --- u_P Uncertainty flag (:) on P
94 A1 --- n_P *[)] ')' for U Gem
95- 96 I2 % M-m/D *?M-m or D
97 A1 --- u_M-m/D Uncertainty flag (:) on M-m/D
98 A1 --- n_M-m/D *[*] Note for eclipsing variable
99-104 A6 --- SpType *Spectrum
106-108 A3 --- evsRef1 Reference for study of the star,
see file evs_ref.dat
109-111 A3 --- evsRef2 Reference for chart or photograph,
see file evs_ref.dat
113-126 A14 --- Desig1 designation in paper Ref1
127-138 A12 --- Desig2 designation in paper Ref2
139-146 A8 --- VarName Designation in gcvs.dat or nsv.dat
148-149 A2 --- nonMem *[n: ] Non-member note
150-153 I4 yr YearNova *? Year of outburst
154 A1 --- u_YearNova [:] Uncertainty flag on YearNova
--------------------------------------------------------------------------------
Note on GalNo: Code identifying the galaxy.
This numbering system begins with 089, the first 88 codes being
reserved for constellations (cf. catalog ).
Note that NGC 1466 is a globular cluster (not a galaxy) between the
LMC and the SMC; we presented it separately, because it is not clear
to which galaxy to attribute its variable stars.
Note on VarNo: variable star No within the galaxy.
Number of the variable star in the galaxy. 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 on Name: 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 on RAh, DEd:
If the star's coordinates are only roughly known, they are
nevertheless formally presented to one second of time in right
ascension (with the decimal point following) and to one arcsecond in
declination (with the decimal point following). See column u_DEs
which indicates the real accuracy.
Note on u_DEs:
the real coordinates accuracy uses the symbols:
(") means right ascensions accurate to one second of time and
declinations accurate to one arcsecond;
(:) means declinations accurate to one tenth of an arcminute;
(*) means declinations accurate to one arcminute.
(!) for V0474 in the Sculptor system, the listed coordinates
refer to the galaxy's center since the coordinates of the
star itself are unknown.
Note on VarType: type of variability.
The classification systems corresponds to the GCVS vols. I-III
(catalog ), with the addition of the new "BLBOO" type, called
after the prototype star BL Boo = NGC 5466 V19 referring to the
so-called "anomalous Cepheids", i.e. stars with periods characteristic
of comparatively long-period RRAB variables, but considerably brighter
by luminosity. There are also suspected variables designated by the
symbol "var:".
Note on l_magMin, magMin, n_magMin:
minMag contains the minimum brightness, or the variability amplitude
instead (in brackets, i.e. l_magMin='(' and n_magMin=')').
(<) means that minMag is an upper limit (light)
Note on magCode: designation of the photometric band.
P means photographic magnitudes,
V means visual or photovisual magnitudes as well as V system magnitudes.
In the latter case, they are usually distinguishable from visual
magnitudes by the number of digits after the decimal point (as a rule,
V system magnitudes are based upon photoelectric or CCD photometry).
Letters U, B, R, I, J, H, K, L, M, N, O, Q mean, as a rule, magnitudes
expressed in corresponding systems of broad-band photometry.
Note on Epoch, YearNova:
The epoch expressed as Julian Date. For eclipsing and ellipsoidal
variables, RV Tau and RS CVn stars, the catalogue gives epochs of
minimum light, and for the rest of variables, epoch of maximum light.
For novae (types N) and supernovae (types SN), the Epoch is completed
by a year of outburst (YearNova column).
Note on l_P, P, l_P, n_P:
For U Gem stars and recurrent novae, the P column gives (in brackets)
the mean cycle value, if known.
Note on M-m/D, n_M-m/D:
Duration of light increase from minimum to maximum (M-m) for intrinsic
variable stars or the eclipse duration (D) for Algol type variables
are expressed in hundredths of the photometric period for the star in
question. An asterisk (*) in 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 on SpType:
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 spec