Peremennye Zvezdy (Variable Stars) 31, No. 2, 2011
Received 4 April; accepted 18 May.
E. V. Kazarovets, Bo Reipurth, N. N. Samus[1,3]
Permanent designations in the system of the General Catalogue of Variable Stars (GCVS) are regularly announced in the so-called Name Lists of Variable Stars. Currently in preparation is the 80th Name List, the first part of it (right ascensions between 0 and 6) has recently been published (Kazarovets et al. 2011).
In the recent years, very many variable stars are being discovered. Large lists of variable stars, mainly from automatic or semi-automatic surveys, remain outside the GCVS because of problems of accurate coordinates and/or detailed classification awaiting their solution. Regular Name Lists have already become quite lengthy (the 80th Name List will contain, in its complete form, about 6000 variable stars), and their preparation, with all needed verification procedures, takes much time and effort. As a result, rather many variable stars of special astrophysical interest do not get their permanent designations for years, and their provisional, often lengthy and clumsy, names have to be used in publications.
For more than a decade, the GCVS team and the Central Bureau of Astronomical Telegrams (CBAT) follow an agreement that GCVS names are being quickly (within days) assigned to Novae announced in the IAU Circulars by the GCVS team upon request from the CBAT. These GCVS names are then repeated in the next Name List. Novae are definitely objects of special astrophysical interest. However, the IAU Circulars announcement sometimes remains, for years, the only publication about a Nova that uses its permanent GCVS name.
Another type of variable stars of special astrophysical interest are young variable stars with strong brightenings, resembling FU Ori or EX Lup. New discoveries of such stars usually cause a flow of publications with provisional names. Upon suggestion from one of the authors (B.R.), we decided to compile a short list of especially interesting young variable stars, to be included into the next Name Lists, and to announce their GCVS names now. These names will be repeated and confirmed in the second and third parts of the 80th Name List.
The GCVS team wishes to accompany the present publication with a note that this special announcement does not mean that we are ready to announce GCVS names upon requests of observers who often tend to believe that the object they are studying now is the most important one. This paper is an experiment, and a very well prepared one; before starting our joint work on the paper, one of the coauthors (B.R.) has compiled a detailed list of suggestions, then scrutinized by the GCVS team.
Below we present the list of new designations in the short format (GCVS name, coordinates, type, provisional designation, reference). Complete GCVS data for the stars in question will appear in the second part of the 80th Name List of Variable Stars. Variability types in the table correspond to the classification system introduced in the 4th edition of the GCVS; among the stars tabulated as INT, there are variables resembling EX Lup (EXors or probable EXors, using the current term) and other unusual, high-amplitude young variables.
Acknowledgments: The GCVS team acknowledges the financial support from the program ``Origin and Evolution of Stars and Galaxies'' of the Presidium of Russian Academy of Sciences.
||Coordinates (J2000.0)||Type||Provisional name||Reference|
|V1180||Cas||02330154||+724327 3||INT||HA 11|||
|V2775||Ori||05 42 48.48||–08 16 34.7||FU:||216-2|||
|V0899||Mon||06 09 19.32||–06 41 55.4||INT||IRAS 06068–0641|||
|V0646||Pup||07 50 35.59||–33 06 23.9||FU:||BBW 76|||
|GM||Cha||11 09 29.4||–76 33 28||INT||ISO Cha I 192|||
|V2675||Oph||16 26 36.81||–24 19 00.2||INT||AOC J162636.81–241900.2|||
|V2492||Cyg||20 51 26.23||+44 05 23.9||INT||IRAS 20496+4354|||
|V2493||Cyg||20 58 17.03||+43 53 43.4||FU||HBC 722|||
|V2494||Cyg||20 58 21.4||+52 29 27.0||FU||HH 381 IRS|||
|V2495||Cyg||21 00 25.4||+52 30 16||FU:||Braid star|||
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