| Article in PDF |
"Peremennye Zvezdy", Prilozhenie, vol. 15, N 5 (2015) |
| ISSN 2221–0474 |
Received: 9.10.2015; accepted: 16.10.2015
(E-mail for contact: helene@inasan.ru, pastukhova@sai.msu.ru)
|
Comments:
1. MinII = 14.1. Twice shorter period with DSCT type is also possible.
2. MinII = 13.9.
3. MinII = 13.9.
4. MinII = 15.18.
5. MinII =13.8. No finding chart was available for this variable before.
6. MinII = 15.17. Twice shorter period with RRC type is also possible.
7. MinII = 14.70. D = 0.12 P. No finding chart was available for this variable before.
8. MinII = 13.55.
9. MinII = 15.4:.
10. MinII = 14.93. D = 0.16 P.
11. MinII = 12.9. D = 0.16 P.
12. D = 0.11 P. We see only one minimum and do not know if it is MinI or MinII.
13. MinII = 13.92. D = 0.10 P.
14. MinII = 14.91.
15. MinII = 15.36.
16. MinII = 15.8.
17. MinII = 13.7.
18. MinII = 15.25.
19. MinII = 14.10.
20. MinII = 14.05.Remarks:
In our work aimed at improvement of the coordinates of variable stars from the NSV catalog (Samus et al. 2007–2015), we found light elements and types for 20 of them. We recovered the variable NSV 10453 suspected by Luyten (1935) and NSV 10503 suspected by Luyten (1933). We study the variables using publicly available electronic archives of CCD observations of the ASAS-3 project (Pojmanski 2002), images of the US Naval Observatory Image and Catalog Archive, and the online publicly available Catalina Sky Survey photometric data (2013).
Acknowledgments: Our studies are supported by a grant from the Program "Transition and explosive processes in the Universe" of the Presidium of Russian Academy of Sciences and by Russian Foundation for Basic Research grant 13-02-00664.References:
Luyten, W.J., 1933, AN, 249, 395
Luyten, W.J., 1935, AN, 258, 121
Pojmanski, G., 2002, Acta Astron., 52, 397
Samus, N.N., Durlevich, O.V., Kazarovets, E.V., Kireeva, N.N., Pastukhova E.N., et al., 2015, General Catalogue of Variable Stars, Centre de Données Astronomiques de Strasbourg, B/gcvs
