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GCVS - General Catalog of Variable Stars, Version 4.2 |
HEASARC Archive |
The present improved electronic version of the GCVS 4th Edition, Volumes I-V, combined with the Name-Lists of Variable Stars Nos. 67 - 77, is also available from the Sternberg Institute via anonymous ftp to ftp://ftp.sai.msu.su/pub/groups/cluster/gcvs/gcvs and more information can also be found at the GCVS Group's Home page at http://www.sai.msu.su/groups/cluster/gcvs/gcvs.
Combined General Catalogue of Variable Stars (GCVS4.2, 2004 Edition)
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)>
Star Name Reason Removed
1 VV AND Non-existent
2 CV AQR Non-existent
3 V464 AQL =V446 AQL
4 V890 AQL Non-existent
5 FQ ARA =RV ARA
6 HV ARA =AN PAV
7 W CAR =V VEL
8 DM CAS =WW CAM
9 V405 CAS =CD CAS
10 V432 CAS =IM CEP
11 V467 CEN =V746 CEN
12 V596 CEN =V583 CEN
13 V694 CEN =BL CEN
14 VY CEP =RR CEP
15 FG CEP =IN CEP
16 GO CEP =AY CEP
17 V344 CEP =V343 CEP
18 Y CET Non-existent
19 W CIR =NW LUP
20 BX COM =XY COM
21 CQ COM =TY COM
22 GL COM =GH COM
23 GT COM Non-existent
24 V422 CRA =SS CRA
25 V530 CRA =V359 CRA
26 V665 CRA =YY CRA
27 MX CYG Non-existent
28 V406 CYG =V354 CYG
29 V1290 CYG =IQ CYG
30 V1810 CYG Non-existent
31 VZ DOR =VW DOR
32 AZ ERI =AO ERI
33 VY GEM Non-existent
34 KN GEM Non-existent
35 IZ HER =HS HER
36 V360 HER Non-existent
37 CO HYA =V1046 CEN
38 UZ HYI =WY HYI
39 IS LAC =PU LAC
40 V390 LAC =HL LAC
41 TU LEO Non-existent
42 GT LIB =EN LIB
43 V489 LYR =BI LYR
44 V359 MON =GR MON
45 FI MUS =RV MUS
46 FN MUS =RX MUS
47 FP MUS =CR MUS
48 FX MUS =DY MUS
49 GH MUS =YZ MUS
50 GG NOR =QT NOR
51 QR NOR =SS NOR
52 SV OCT =RR OCT
53 BO OCT =EPS OCT
54 HV OPH Non-existent
55 V1548 OPH Non-existent
56 V2063 OPH Non-existent
57 V2132 OPH =V1003 OPH
58 V2529 OPH =V2115 OPH
59 V1102 ORI =V1121 ORI
60 UZ PEG =CR CYG
61 DS PEG =V460 CYG
62 AX PUP =VZ CMA
63 S RET =R RET
64 AF SGR Non-existent
65 BT SGR =V1701 SGR
66 V908 SGR =V737 SGR
67 V1154 SGR =V948 SGR
68 V1285 SGR =V703 SGR
69 V1728 SGR =V2471 SGR
70 V2610 SGR =V372 SGR
71 V2988 SGR =V655 SGR
72 V3475 SGR =V2355 SGR
73 V3507 SGR =V2360 SGR
74 V3723 SGR =V1635 SGR
75 V3729 SGR =V2371 SGR
76 V3746 SGR =V948 SGR
77 V4020 SGR =AK SGR
78 V4053 SGR =V1673 SGR
79 V4056 SGR =IL SGR
80 V SCO =W SCO
81 V855 SCO =GM SCO
82 CC SCT =AL SCT
83 HW TAU Non-existent
84 V391 TAU =V392 TAU
85 V393 TAU =V634 TAU
86 V421 TAU Non-existent
87 V505 TAU =V614 TAU
88 V580 TAU =V404 TAU
89 V616 TAU =V737 TAU
90 V628 TAU =V515 TAU
91 V704 TAU =V355 TAU
92 V708 TAU =V508 TAU
93 V745 TAU =V629 TAU
94 V786 TAU =V518 TAU
95 V803 TAU =V357 TAU
96 V1209 TAU =V738 TAU
Constell_Code
This is a numeric code for the constellation name in
alphabetic order of the full constellation name, so, for example, Cancer
or CNC has a code value of 12 which precedes the code value of 16 for
Capricornus or CAP). The codes are as follows:
Constellation Constell_code Constellation Constell_code
Name Name
AND 1 ANT 2
APS 3 AQR 4
AQL 5 ARA 6
ARI 7 AUR 8
BOO 9 CAE 10
CAM 11 CNC 12
CVN 13 CMA 14
CMI 15 CAP 16
CAR 17 CAS 18
CEN 19 CEP 20
CET 21 CHA 22
CIR 23 COL 24
COM 25 CRA 26
CRB 27 CRV 28
CRT 29 CRU 30
CYG 31 DEL 32
DOR 33 DRA 34
EQU 35 ERI 36
FOR 37 GEM 38
GRU 39 HER 40
HOR 41 HYA 42
HYI 43 IND 44
LAC 45 LEO 46
LMI 47 LEP 48
LIB 49 LUP 50
LYN 51 LYR 52
MEN 53 MIC 54
MON 55 MUS 56
NOR 57 OCT 58
OPH 59 ORI 60
PAV 61 PEG 62
PER 63 PHE 64
PIC 65 PSC 66
PSA 67 PUP 68
PYX 69 RET 70
SGE 71 SGR 72
SCO 73 SCL 74
SCT 75 SER 76
SEX 77 TAU 78
TEL 79 TRI 80
TRA 81 TUC 82
UMA 83 UMI 84
VEL 85 VIR 86
VOL 87 VUL 88
Constell_Star_Num
The star number within the constellation, which
typically corresponds to the order in which the variables were found. For
historical reasons, the first designated variable star in a constellation
was given the name 'R constellation', e.g., 'R CMA', the second the prefix
'S', etc, the ninth 'Z', the tenth 'RR', etc., the 55th 'AA', etc, until the
334th 'QZ', at which point the letters have been exhausted, and the 335th
variable is given the 'V0335' (or V335) prefix, e.g., 'V0335 AND', and
so on for all subsequent discoveries in the constellation.
Component_ID
The component identification, 'A', 'B', etc., i.e., the
designations of components of double/multiple stars. Usually, only one
component of the binary is variable, but there are cases (CE Cas A and B,
and EQ Peg A and B) where both components are variable and are listed as
separate entries in the catalog.
Name
The variable star designation. For a brief explanation of the
variable star naming convention, see the help entry for the
constell_star_num parameter. Notice that stars which have Bayer designations,
e.g. Alpha Ori, which have been discovered to be variable stars have not been
given a new variable star designation but are listed by their Bayer designation
in the GCVS, e.g., as 'alf Ori'. (The traditional transliterations of Greek
letters are used, e.g., 'alf' for alpha). There are also a small number
of historical variable stars which were named using lower-case latin
characters, e.g. g Her and u Her. The lower- and upper-case latin letters must
be distinguished, notice, because in some cases, e.g., u Her and U Her,
there are names for completely different stars using the alternate naming
conventions.
Note_Flag
This flag is set to 'Y' if there are notes on this star in
the published version of the catalog (Kholopov et al. 1985-1988).
RA
The Right Ascension of the star in the specified equinox. This was given
to no better than a precision of 0.1 seconds of time in the originating table,
and in both 1950 and 2000 equatorial co-ordinates. For the Web Browse version
of this database, we have ingested the J2000 Equator and Epoch position
since this is its default equator, while for the xray account Browse version,
we have ingested the B1950 Equator and Epoch position, since this is its
default equator.
Dec
The Declination of the star in the specified equinox. This was given
to a precision of 1 arcsecond in the originating table,
and in both 1950 and 2000 equatorial co-ordinates. For the Web Browse version
of this database, we have ingested the J2000 Equator and Epoch position
since this is its default equator, while for the xray account Browse version,
we have ingested the B1950 Equator and Epoch position, since this is its
default equator.
LII
The Galactic Longitude of the star.
BII
The Galactic Latitude of the star.
Position_Flag
This is a code flag describing the positional accuracy,
as follows:
'A' means right ascensions accurate to one second of time and
declinations accurate to one tenth of an arcminute;
'B' means declinations accurate to one arcminute;
'C' means right ascensions accurate to one minute of time and
declinations accurate to one arcminute.
Position_Note
This flag is set to 'Y' to indicate that the coordinates
could not be improved and that they were recalculated from the old
rough B1950 coordinates to the J2000 equinox coordinates with allowance
for precession.
Variability_Type
The type of variability according to the GCVS variability
classification scheme. The system of variable star classification corresponds
to the GCVS, 4th edition, with six additional classes (ZZO, AM, R, BE, LBV, and
BLBOO) that were introduced in the Name-Lists 67 - 72 and in the GCVS vol. V.
The full scheme is described in the file:
ftp://cdsarc.u-strasbg.fr/pub/cats/II/250/vartype.txt
Limit_Max_Mag
This is a limit flag for the maximum magnitude, '>'
indicating that the latter is a faint limit, '<' that it is a bright limit.
Max_Mag
The apparent magnitude at maximum brightness.
Max_Mag_Flag
This flag is set to ':' if the maximum magnitude is
considered uncertain.
Limit_Min_Mag
This is a limit flag for the minimum magnitude, '>'
indicating that the latter is a bright limit., and '(' that it is an
amplitude rather than an observed magnitude.
Min_Mag
This parameter is either the apparent magnitude at minimum
brightness, or, if the value of limit_min_mag is '(', the amplitude of
variation.
Min_Mag_Flag
This flag is set to ':' if the minimum magnitude is
considered uncertain.
Min_Mag_Altsys
This is a code which is non-blank when the minimum magnitude
or amplitude (min_mag) is given in an alternative photometric system to the
one for the maximum magnitude (max_mag) which is given by the mag_system
parameter. These codes are described in the parameter help for the mag_system
parameter. Notice that an asterisk means the amplitude measured in white light.
Mag_System
The photometric system in which the maximum and minimum
(unless min_mag_altsys is non-blank) magnitudes are reported. The main codes
used are P (photographic magnitudes) and V (visual, photovisual, or Johnson V).
See also the description given in the published GCVS, 4th Edition (Kholopov
et al. 1985-1988). Several stars from the 68th Name-List have values of '1.'
designating the 1.04 micrometer band of the system introduced by
G.W. Lockwood. The designations u, v, b, and y refer to the Stroemgren system,
the symbols 'I'and 'R' mean magnitudes in Cousins' RI system, 'g' designates
magnitudes in the system of Thuan and Gunn, 'T' stands for broad-band Tycho
magnitudes formed from B and V measurements, while 'r' indicates red magnitudes
that are not tied to a particular system.
Epoch
This is generally the epoch for maximum light, in Julian Days, except
for all eclipsing and ellipsoidal variables, as well as for RV Tau and
RS CVn types, where it is the epoch for minimum light. This rule may
occasionally be broken, but this is explained only in the remarks to the
printed version of the catalog, which are not available in machine-readable
form at this time. For novae (types N) and supernovae (types SN), the epoch
is completed by the a year of the outburst given in the nova_year parameter.
Epoch_Flag
This parameter is a flag qualifying the epoch according to the
following codes:
':' epoch is uncertain; '+' epoch may be later than that reported; '-' epoch may be earlier than that reported.
Nova_Year
The year of outburst for a nova. The exact date of maximum
light is given in JD in the epoch parameter.
Nova_Year_Flag
This parameter is set to ':' to indicate that there is
uncertainty in the year of the outburst.
Limit_Period
A code qualifying the period, as follows: '>' or '<' if the
period is a lower or upper limit, respectively, or '(' if the period is the
mean cycle time of a U Gem or recurrent nova.
Period
The period of the variable star, in days. This is given with
a range of precisions up to a possible maximum of 1.E-10 days in the
original table.
Period_Note
This is another flag that contains information if the
actual period may be either a multiple ('MN') or a fraction 'DN' of the quoted
period value.
Rise_Eclipse_Time
This parameter contains either the rise time (M-m) for
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
as a percentage of the period of the star.
Rise_Eclipse_Time_Flag
This flag is set to ':' if the rise time or eclipse
duration given in the rise_eclipse_time parameter is considered uncertain.
Eclipse_Var_Note
This is a note used for eclipsing variables that is set
to '0' when the duration of the light constancy phase at minimum light (d)
is equal to zero.
Spect_Type
The spectral type of the variable star.
Ref_Star
This is a reference code referring to a major study of the star,
as follows: (the codes and their corresponding references can be found in
ftp://cdsarc.u-strasbg.fr/pub/cats/II/250/refs.dat )
"00001" - if the main characteristics of the star were determined by
the GCVS authors themselves
"00002" - "09148" - Vol. I GCVS (see Kholopov et al., 1985-1988)
"09149" - "09558" - Vol. II GCVS
"09559" - "10200" - Vol. III GCVS
"67001" - "77229" - Name-Lists Nos.67-77
References from Vol. V (extragalactic variables) start with the letter 'V',
and references to the suspected variables start with 'N' (first part) or 'S'
(supplement). References may also be abbreviations of catalog names (BD, CPD,
CoD, GSC, HIP, USNO).
Ref_Chart
This is a reference code referring to a reference containing a
chart or photograph of the star field, as follows: (the codes and their
corresponding references can be found in the file
ftp://cdsarc.u-strasbg.fr/pub/cats/II/250/refs.dat )
"00001" - if the main characteristics of the star were determined by
the GCVS authors themselves
"00002" - "09148" - Vol. I GCVS (see Kholopov et al., 1985-1988)
"09149" - "09558" - Vol. II GCVS
"09559" - "10200" - Vol. III GCVS
"67001" - "77229" - Name-Lists Nos.67-77
References from Vol. V (extragalactic variables) start with the letter 'V',
and references to the suspected variables start with 'N' (first part) or 'S'
(supplement). References may also be abbreviations of catalog names (BD, CPD,
CoD, GSC, HIP, USNO), if no chart is available for the variable, but the star
is contained in one of the Durchmusterung catalogs, the Hubble Space
Telescope Guide Star Catalog (GSC), the Hipparcos (HIP) Catalog, or the
USNO Catalog..
Comment_Flag
This parameter is a miscellaneous flag with the following meanings:
'=' indicates the star is also known under another variable name '+' indicates the star is in other catalogs (e.g. Hipparcos or Name Lists)
Alt_Name
An alternative designation for the variable.
Class
The HEASARC Browse object classification, based on the spectral type
parameter (spect_type), if there is information in this field, else
based on the variability type parameter (variability_type).