Catalogue of variable stars
This site consists of several parts:
1)
The General Catalogue of Variable Stars (GCVS), the New Suspected
catalogue of Variable Stars (NSV) and the Supplement of the last catalogue
(NSVSup). Records are sorted on right ascension and divided into hour-groups to
make the files more manageable. (these files are called GNS).
2)
A merge of the ASAS, Rotse1, USV (Unspecified red variables from Rotse)
and NSVS variables as presented on their websites. (These files are called
ARUN).
3)
A crossindex of the GNS file with the DM and other identifications. For
purposes of efficiency only the main identifications from the GCVS data have
been taken. (This file is not ready yet, but will be in about a week).
4)
A merged file of literature references, containing all the literature
references for the GNS files. (This file is not ready yet, but will be in about
a week).
For the data in the remarks files of the GCVS on the variables, you
will have to refer to their website.
Data of the GNS and ARUN files have not been merged yet because the
data from ASAS, Rotse1, USV and NSVS
are mostly still preliminary and of a different status than the data from the
GCVS. (Which does not mean that the GCVS data do not contain mistakes).
About 1:
Content of the columns is according to the original GCVS files. For a
description of the contents, see their website http://www.sai.msu.ru/groups/cluster/gcvs/
However a few details have been changed:
-
year of nova outburst has been added into the Type column
-
Identities and identifications have been deleted, because they are in
the crossindex files
-
Double entries of literature references have been deleted
Two columns have been added:
NSVSlink: this field contains a search command that will perform a
search on the NSVS website http://skydot.lanl.gov/nsvs/nsvs.php
so the corresponding identification can be made on the NSVS site. This link is
generated on the basis of the given coordinates in the GCVS/NSV/Supplement
alone so there is no guarantee that it will result in an identification. A
search radius of 15" has been chosen.
ASASlink: this field contains a search command that will create an ASAS
id and display the corresponding data on the ASAS website http://www.astrouw.edu.pl/~gp/asas/asas.html
so the corresponding identification can be made on the ASAS site. This link is
generated on the basis of the given coordinates in the GCVS/NSV/Supplement
alone so there is no guarantee that it will result in finding a real ASAS id.
About 2:
In the ARUN files, several remarks can be made:
-
in the Identifier column, the original name of the identifier has been
put in
-
the appr. 2500 double entries in the ASAS database have been deleted as
much as possible
-
the magnitude in the Max column is only a median magnitude for
the Rotse1, USV and NSVS variables
-
the enormous number of significant digits for periods in the Rotse1
catalogue is usually rubbish. If you have an EW variable in the Rotse1
catalogue, it is better to take only half of the significant digits as certain.
-
many Misc type variables with low amplitudes in ASAS are propably not
really variable but measurement errors
-
the GCVS cross identifications are usually quite good in the Rotse/NSVS
variables but usually quite poor for the ASAS variables
-
the ASAS and NSVS link will always result in an identification in these files
The tables
Both GNS and ARUN files have been split up in hour parts to make them
manageable in this html form. Click on the link (Use: Open link in new window)
to see it's contents.
GNS
ARUN
Questions? my email gertho @ xs4all.nl