Light Elements for 29 Semiregular Variables from the NSV Catalog

E. V. Kazarovets, E. N. Pastukhova
Institute of Astronomy, Russian Academy of Sciences, Moscow, Russia

Received:   29.04.2013;   accepted:   9.10.2013
(E-mail for contact: helene@inasan.ru, pastukhova@sai.msu.ru)

Comments:


1. HV 3928 was discovered by Woods (1926). No finding chart was available for this variable. We recovered the variable using US Naval Observatory Archive Images. J–K = 1.42.

2. J–K = 1.32.

3. J–K = 1.34.

4. MinII=13^m.5. J–K = 0.72.

5. The star was also discovered in the ASAS-3 survey and enters their variable-star catalog as a MISC-type star but with its secondary period (137^d). J–K = 1.62.

6. J–K = 1.21.

7. J–K = 1.42.

8. The star was also discovered in the ASAS-3 survey and enters their variable-star catalog as a MISC-type star but with a wrong period (153^d.1). J–K = 1.21.

9. J–K = 1.22. Note added in proof: Our result for this star has been confirmed by S. Otero (VSX database) after the submission of this paper.

10. HV 9054 was discovered by Luyten (1935). No finding chart was available for this variable. We recovered the variable using US Naval Observatory Archive Images. The star was also discovered in the ASAS-3 survey and enters their variable-star catalog as a MISC-type star but with a wrong period (194^d.4). J–K = 1.55.

11. J–K = 1.47.

12. J–K = 1.20.

13. J–K = 1.21.

14. J–K = 1.19.

15. The star was also discovered in the ASAS-3 survey and enters their variable-star catalog as a MISC-type star but with a somewhat different period (126^d.1). J–K = 1.34.

16. J–K = 0.82.

17. HV 10961 was discovered by Huruhata (Boyce and Huruhata 1942) and found, upon our request, by the late Dr. M.Hazen in Harvard Observatory's logbooks. No finding chart was avaible for this variable before. The star was also discovered in the ASAS-3 survey and enters their variable-star catalog as a MISC-type star but with a wrong period (34^d.2). J–K = 1.02.

18. J–K = 1.27.

19. The star was also discovered in the ASAS-3 survey and enters their variable-star catalog as a MISC-type star but with a wrong period (151^d.7). J–K = 1.31.

20. HV 9098 was discovered by Luyten (1936). No finding chart was available for this variable. We recovered the variable using US Naval Observatory Archive Images. J–K = 1.24.

21. HV 9099 was discovered by Luyten (1936). No finding chart was available for this variable. We recovered the variable using US Naval Observatory Archive Images. The star was also discovered in the ASAS-3 survey and enters their variable-star catalog as a MISC/SR-type star but with a wrong period (385^d.1). J–K = 1.33.

22. J–K = 1.46.

23. HV 9116 was discovered by Luyten (1937). No finding chart was available for this variable. We recovered the variable using US Naval Observatory Archive Images. J–K = 1.40.

24. J–K = 1.40.

25. J–K = 1.34.

26. HV 9143 was discovered by Luyten (1936). No finding chart was available for this variable. We recovered the variable using US Naval Observatory Archive Images. J–K = 1.00.

27. The star was also discovered in the ASAS-3 survey and enters their variable-star catalog as a MISC/SR-type star but with a wrong period (118^d.0). J–K = 1.34.

28. J–K = 1.30.

29. J–K = 1.09.

Remarks:
In our work aimed at improvement of the coordinates of variable stars in the NSV catalog (Samus et al. 2007–2012), we checked a number of poorly studied variables and found light elements and types for 29 of them. We were able to study the variables thanks to the publicly available electronic archives of CCD observations of the ASAS-3 project (Pojmanski 2002), and to images of the US Naval Observatory Image and Catalog Archive. In the results presented in the Table, Houk star numbers refer to N. Houk's discovery announcement (manuscript, 1968).

Acknowledgments: Our studies are supported by a grant from the Program "Origin and Evolution of Stars and Galaxies" of the Presidium of Russian Academy of Sciences and by Russian Foundation for Basic Research grant 13‑02‑00664. We gratefully remember Martha Hazen's contribution to our work on identifications of variable stars.

References:
Boyce, E.H., Huruhata, M., 1942, Harvard Observ. Ann., 109, No.4
Luyten, W.J., 1935, Astron. Nachr., 256, 325
Luyten, W.J., 1936, Astron. Nachr., 258, 121
Luyten, W.J., 1937, Astron. Nachr., 261, 451
Pojmanski, G., 2002, Acta Astron., 52, 397
Samus, N.N., Durlevich, O.V., Kazarovets, E V., Kireeva, N.N., Pastukhova E.N., et al., 2007–2012, General Catalogue of Variable Stars, Centre de Données Astronomiques de Strasbourg, B/gcvs
Woods, I., 1926, Harvard Observ. Bull., No. 834