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Konkoly Observatory Budapest 9 July 2001 HU ISSN 0374 - 0676 (print) HU ISSN 1587 - 2440 (on-line) |
Abstract:
We present the next regular Name-List of variable stars
containing information on 1406 variable stars recently designated
in the system of the General Catalogue of Variable Stars.
Keyword(s):
variable stars; catalogues
The present 76th Name-List of Variable Stars, compiled basically in the manner first introduced in the 67th Name-List (IBVS No. 2681, 1985), contains all data necessary for identification of 1406 new variables finally designated in 2001. The total number of designated variable stars, not counting designated non-existing stars or stars subsequently identified with earlier-designated variables, has now reached 37391.
The 76th Name-List consists of two tables and a list of references. Table 1 contains the list of new variables arranged in the order of their right ascensions. We start the new century with the new equinox accepted for the GCVS data, 2000.0. The table gives the ordinal number and the designation of each variable; its equatorial coordinates for the equinox 2000.0 (we present right ascensions to 0s.1 and declinations to 1''. The coordinates were found in the literature, taken from positional catalogues, including USNO A1.0/A2.0 and GSC, or determined by the authors); the range of variability (sometimes the column ``Min'' gives, in parentheses, the amplitude of light variation; the symbol ``('' means that the star, in minimum light, becomes fainter, than the magnitude indicated); and the system of magnitudes used (``P'' are photographic magnitudes; the symbols ``Rc'', ``Ic'' designate magnitudes in Cousins's RI system; the symbols ``b'', ``y'' mean Strömgren's b, y magnitudes; ``g, i'' are magnitudes in Gunn's system; ``Hp'' stands for magnitudes in the system of the Hipparcos Catalog; ``*'' corresponds to unfiltered CCD magnitudes; the rest of designations are standard Johnson UBVRIJK magnitudes); the type of variability according to the classification system described in the forewords to the first three volumes of the 4th GCVS edition (with the additions introduced in the 68th Name-List, IBVS No. 3058, 1987, in the 69th Name-List, IBVS No. 3323, 1989, in the 72nd Name-List, IBVS No. 4140, in the 75th Name-List, IBVS No. 4870, and two additions described below; see also the description of variability types and distribution of stars over variability types at http://www.sai.msu.su/groups/cluster/gcvs/gcvs/iii/vartype.txt); two references to the list of papers which follows Table 2 (the first reference is to the investigation of the star, the second one indicates the paper containing a finding chart, or refers to the Durchmusterung - DM (BD, CoD, or CPD), or the Hubble Space Telescope Guide Star Catalog - GSC, or the USNO A1.0/A2.0 catalog - USNO, if the star can be found using one of them).
The order of stars in Table 1 corresponds to the order of their 2000.0 right ascension. Note that several stars named between Name-Lists No. 75 and No. 76 upon request from the IAU Bureau of Astronomical Telegrams have GCVS names, within their constellation, not in their proper order by right ascension.
We have decided to indicate the system of magnitudes as ``V'' for numerous stars studied by Japanese amateur astronomers using photographs on T400 films, though the authors call their system ``photographic''. These films, together with the magnitudes of comparison stars use, reproduce a system resembling the traditional photovisual one, and at least a system far for the traditional photographic one. The designation ``*'', besides unfiltered CCD data, was also used for the photoelectric magnitudes in the non-standard Wroclaw VW system.
In a small number of cases, the value of the variability amplitude (column ``Min'', in parentheses) could not be expressed in the same system of magnitudes as the star's brightness; in such cases we indicate the photometric band for the amplitude separately.
In the present Name-List, we have introduced two new variability types for variable stars. The prototypes are the stars of the present Name-List.
EP. Stars showing eclipses by their planets. Prototype: V376 Peg.
SRS. Semiregular pulsating red giants with short period (several days to a month), probably high-overtone pulsators. Prototype: AU Ari.
A version of Table 1 given in the electronic supplement to this paper
(file 5135-t1.txt) contains also coordinates for the equinox 1950.0.
In the electronic table, no spaces are left between hours and minutes,
minutes and seconds of right ascension or between degrees and minutes,
minutes and seconds of declination.
Data file: /pub/ibvs/5101/5135-t1.txt
Table 2 contains the list of variables arranged in the order of their
variable star names within constellations. After the designation of a
variable, its ordinal number from Table 1 is given, as well as
identifications with several major catalogues and identifications
necessary to find this star in the papers referred to in Table 1 or in
the papers with the first (or independent) announcement of the
discovery of its variability, referred to (in some cases) in square
brackets after the corresponding identification in Table 2. In
variance with our earlier practice and in accordance with the style
of Name-List No. 75, we did not include names
of discoverers different from the name of the author(s) of the
paper referred to. After the identifications, some minimal remarks
are given if necessary. Table 2 and the list of references are also
presented in the form of ASCII files in the electronic supplement to
this paper (files 5135-t2.txt and 5135-t3.txt). The abbreviated names of
the catalogues in Table 2 generally follow conventions of the GCVS or
of the SIMBAD data base; in its electronic version, ``Name'' stands for
non-standard names or abbreviations, mainly from discovery
announcements, and ``Rmrk'', for remarks.
Data file: /pub/ibvs/5101/5135-t2.txt
Data file: /pub/ibvs/5101/5135-t3.txt
We would like to introduce a correction to the Name-List No. 73 (IBVS No. 4471, 1997). For the star No. 73113 (V1099 Tau), the magnitude in the column ``Max'' should be 6.31.
As usual, those wishing to find new and corrected GCVS and NSV catalog information are asked to regularly visit our web site:
At our web site, we will soon open access to a new table, containing accurate coordinates and, whenever available, proper motions for many GCVS and NSV catalog stars, taken from positional catalogs (referred to on the list) or measured by the GCVS team. The list will be continuously expanded in the course of our future positional work. The positional information is based upon our new identifications, primarily using the best finding charts available, and checked by comparison with identifications by other authors whenever possible.
Thanks are due to Dr. S.V. Antipin for his help during the preparation
of the present Name-List and to all members of the GCVS team who
prepared information for the variable star data base. We would like to
thank many scientists who immediately responsed to our requests to
provide missing data or correct erroneous data necessary for this
Name-List. Also, thanks are due for sending us corrections to our
catalogs and Name-Lists. This study was supported in part by Russian
Foundation for Basic Research through grant 99-02-16333, by the Russian
Federal Scientific and Technological Programme ``Astronomy'', and by
the Support Programme for Leading Scientific Schools of Russia.