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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.67-77References 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.67-77References 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).