Article in PDF |
"Peremennye Zvezdy", Prilozhenie, vol. 14, N 11 (2014) |
#1. Siberian State Aerospace University, Krasnoyarsk, Russia;
#2. Institute of Astronomy, Russian Academy of Sciences, Moscow, Russia; #3. Sternberg Astronomical Institute, Lomonosov Moscow State University, Moscow, Russia |
ISSN 2221–0474 |
Received: 17.06.2013; accepted: 26.09.2014
(E-mail for contact: slovoktk@mail.ru)
|
Comments:
1. MinII = 16m.60.
3. MinII = 16m.30.
4. J = 8.597, H = 7.577, K = 7.165 (2MASS).
5. MinII = 14m.2: .
6. Multiperiodic. Besides the period in the table periods of 0d.145156 and 0d.79857 were found.
7. MinII = 15m.85.
8. MinII = 15m.90.
9. J = 10.340, H = 9.799, K = 9.632 (2MASS).
10. MinII = 15m.75.
11. MinII = 16m.69.
12. MinII = 15m.55.
13. MinII = 15m.49.
14. MinII = 17m.02.
16. MinII = 16m.80.
19. J = 10.302, H = 9.836, K = 9.713 (2MASS).
20. MinII = 15m.70.
22. MinII = 15m.15.
23. J = 10.689, H = 10.117, K = 9.962 (2MASS).
24. MinII = 14m.09.
25. MinII = 15m.26.
26. J = 9.026, H = 8.076, K = 7.743 (2MASS).
27. J = 11.767, H = 10.880, K = 10.688 (2MASS).
28. MinII = 13m.89.
29. MinII = 16m.62.
30. MinII = 14m.53. O'Connell effect.
31. MinII = 14m.93.
32. MinII = 15m.65.
33. MinII = 16m.36.
34. MinII = 14m.82.
35. MinII = 15m.5: .
36. J = 8.719, H = 7.784, K = 7.479 (2MASS).
The star in the NSVS database: NSVS ID 6175317. The NSVS data confirm the star's type.
37. MinII = 17m.34.
38. J = 13.725, H = 13.065, K = 12.900 (2MASS).
39. J = 8.911, H = 7.977, K = 7.680 (2MASS).
40. MinII = 15m.50.
41. J = 12.608, H = 12.110, K = 11.973 (2MASS).
42. A close pair of stars; which of the components varies is unknown. Component A: 2MASS 22501902+5015238, 14m.8V (GSC 2.3). Component B: 2MASS 22501864+5015189, 15m.5V (GSC 2.3). ρ = 6″, θ = 217°, 1998.
MinII = 14m.92.
43. MinII = 13m.18.
44. MinII = 17m.57.
46. O'Connell effect.
48. MinII = 17m.69.
49. MinII = 16m.51.
50. MinII = 13m.79:.
51. MinII = 15m.35.
52. MinII = 14m.81.
54. MinII = 13m.61.
56. J = 10.383, H = 9.411, K = 9.035 (2MASS).
57. MinII = 12m.88.
58. J = 12.692, H = 12.158, K = 12.040 (2MASS).
59. MinII = 15m.70: .
60. J = 12.234, H = 11.482, K = 11.317 (2MASS).
61. J = 11.726, H = 11.185, K = 11.099 (2MASS).
62. MinII = 15m.48.Remarks:
On August 16 – October 30, 2011, we obtained about 1600 images with 30- second exposures of a field in Lacerta for discovery and investigation of new variables stars.
The field has coordinates α = 22h50m, δ = +50°00′ and size of 2.3°×2.3°. Here the second part of our results is presented.
Our observations were performed in the city of Krasnoyarsk with a Hamilton telescope (D = 400 mm, F = 915 mm) equipped with an unfiltered FLI ML-9000 CCD camera (3056×3056 pixels, pixel size 12 μm).
For basic reductions for dark current, flat fields, bias, and for removing cosmic-ray hits, we used MaxIm DL software.
The magnitudes were referred to red magnitudes of comparison stars from the USNO-A2.0 catalog (Monet et al. 1998).
For most new variable stars we applied VaST software (developed by K. Sokolovsky and A. Lebedev, described by Kolesnikova et al. 2008) for search and photometry. Some of variable stars were found with C-Munipack package.
To search for periods, we applied WinEfk software provided by V.P. Goranskij.
Acknowledgements: The authors wish to thank Dr. V.P. Goranskij for providing his period-search software, Dr. K. Sokolovsky and A. Lebedev for VaST software.References:
Kolesnikova, D.M., Sat, L.A., Sokolovsky, K.V., et al., 2008, Acta Astron., 58, 279
Monet, D., Bird, A., Canzian, B., et al., 1998, USNO-A2.0, A Catalog of Astrometric Standards (U.S. Naval Observatory, Washington, DC), Centre de Données Astronomiques de Strasbourg, I/252