Peremennye Zvezdy

Article in PDF
"Peremennye Zvezdy",
Prilozhenie,
vol. 15, N 8 (2015)

New Variable Stars in Cepheus: Area of 2°.3×2°.3, Centered at α=22h00m, δ=60°00′ (2000.0). Part I

E. G. Lapukhin#1, S. A. Veselkov#1, A. M. Zubareva#2,3
#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:   2.01.2014;   accepted:   14.12.2015
(E-mail for contact: slovoktk@mail.ru)

#NameOtherCoord (J2000)TypeMaxMinSystemPeriodEpoch (JD)typeSpCommentL.CurveFind.ChartData
1 USNO-A2.0 1425-1242615721 51 29.94, +59 23 50.0EA13.9914.15 5.159:2456547.690min Comm. 1lc10493.png10493.pngout10493.txt
2 USNO-A2.0 1425-1243984821 52 05.97, +59 28 47.1EA14.4014.63 1.957672456566.741min Comm. 2lc12098.png12098.pngout12098.txt
3 USNO-A2.0 1425-1244091421 52 08.80, +59 04 35.8EA14.6815.10 2.55692456559.986min Comm. 3lc04318.png04318.pngout04318.txt
4 USNO-A2.0 1425-1244714221 52 25.26, +59 11 43.1EW14.7715.05 0.709032456554.141min Comm. 4lc06325.png06325.pngout06325.txt
5 USNO-A2.0 1425-1244865821 52 29.29, +59 11 53.2DSCTC12.8312.86 0.2071682456528.209max  lc06284.png06284.pngout06284.txt
6 USNO-A2.0 1425-1246350921 53 08.70, +59 12 01.2DSCTC12.5612.60 0.10180732456560.119max  lc06060.png06060.pngout06060.txt
7 USNO-A2.0 1425-1247811121 53 45.46, +59 05 58.1LB12.2012.55   other Comm. 7lc04336.png04336.pngout04336.txt
8 USNO-A2.0 1425-1249147921 54 19.65, +59 24 53.6SR:13.2713.33 32.3:2455212max Comm. 8lc10220.png10220.pngout10220.txt
9 USNO-A2.0 1425-1249194721 54 20.73, +59 13 55.7BY13.6813.80 0.749292456545.247max Comm. 9lc06459.png06459.pngout06459.txt
10NSV 13961USNO-A2.0 1425-1249737121 54 34.68, +59 07 18.0DCEP:13.64:14.16 3.75982456560:max  lc04541.png04541.pngout04541.txt
11 USNO-A2.0 1425-1250583121 54 55.56, +58 57 14.0EA13.8413.94 1.472942456559.959min Comm. 11lc02009.png02009.pngout02009.txt
12 USNO-A2.0 1425-1250813821 55 01.05, +59 29 00.6SR:14.1514.32 45.62456183max Comm. 12lc11545.png11545.pngout11545.txt
13 USNO-A2.0 1425-1250887921 55 02.82, +59 14 07.7SR:14.0814.25 40.12456557.5max Comm. 13lc06618.png06618.pngout06618.txt
14 USNO-A2.0 1425-1251236321 55 11.04, +59 25 02.6LB:13.5413.75   other Comm. 14lc10119.png10119.pngout10119.txt
15 USNO-A2.0 1425-1251714421 55 22.01, +59 17 19.6LB14.0614.28   other Comm. 15lc07586.png07586.pngout07586.txt
16 USNO-A2.0 1425-1252044121 55 29.51, +59 08 09.4EA14.1914.53 2.6403:2456182.525min Comm. 16lc04613.png04613.pngout04613.txt
17 USNO-A2.0 1425-1254917421 56 35.79, +59 01 40.6EB15.4115.94 0.777382456528.019min Comm. 17lc03012.png03012.pngout03012.txt
18 USNO-A2.0 1425-1254944921 56 36.43, +58 57 03.4EW15.4015.79 0.438572456560.159min Comm. 18lc01821.png01821.pngout01821.txt
19 USNO-A2.0 1425-1255021621 56 38.14, +59 01 18.6LB13.0513.20   other Comm. 19lc02776.png02776.pngout02776.txt
20 USNO-A2.0 1425-1255188421 56 42.00, +59 15 13.8EA14.7314.89 1.121572456560.137min Comm. 20lc06722.png06722.pngout06722.txt
21 USNO-A2.0 1425-1255445621 56 47.50, +59 25 21.2EW15.5215.88 0.902712456559.946min Comm. 21lc10123.png10123.pngout10123.txt
22 USNO-A2.0 1425-1258200521 57 48.97, +58 52 52.2DCEP:14.4414.69 2.011932456567.115max  lc00717.png00717.pngout00717.txt
23 USNO-B1.0 1490-033563721 58 22.60, +59 01 11.2LB12.6512.84   other Comm. 23lc02395.png02395.pngout02395.txt
24 USNO-B1.0 1494-032980321 58 30.53, +59 24 53.2LB:12.2812.45   other Comm. 24lc09447.png09447.pngout09447.txt
25 USNO-A2.0 1425-1260970421 58 51.04, +58 57 33.8LB13.6213.82   other Comm. 25lc01672.png01672.pngout01672.txt
26 USNO-A2.0 1425-1261692621 59 07.46, +59 20 47.7EA12.8313.13 1.58432456554.130min Comm. 26lc08102.png08102.pngout08102.txt
27 USNO-A2.0 1425-1261720121 59 08.17, +59 13 16.1EA13.5913.99 5.756:2456183.243min Comm. 27lc05793.png05793.pngout05793.txt
28 USNO-A2.0 1425-1261856421 59 11.31, +59 20 29.9LB:13.0613.33   other Comm. 28lc07945.png07945.pngout07945.txt
29V0722 CepUSNO-A2.0 1425-1261898121 59 12.37, +58 58 51.8SR13.1613.54 87.82456589max Comm. 29lc01887.png01887.pngout01887.txt
30 USNO-A2.0 1425-1261939221 59 13.27, +59 28 19.3EW15.6716.07 0.425012456182.459min Comm. 30lc10790.png10790.pngout10790.txt
31 USNO-A2.0 1425-1262357621 59 23.24, +59 24 56.9HADS14.3314.72 0.10273062456205.228max Comm. 31lc09514.png09514.pngout09514.txt
32 USNO-A2.0 1425-1262812421 59 34.09, +59 09 20.1EA13.5713.93 4.93382456182.113min Comm. 32lc04600.png04600.pngout04600.txt
33 USNO-A2.0 1425-1263104621 59 41.42, +58 51 27.0LB14.0514.31   other Comm. 33lc00221.png00221.pngout00221.txt
34 USNO-A2.0 1425-1264848922 00 26.53, +59 14 17.8LB12.8412.94   other Comm. 34lc05836.png05836.pngout05836.txt
35 USNO-A2.0 1425-1265103922 00 33.53, +59 18 30.1LB:13.4413.58   other Comm. 35lc07170.png07170.pngout07170.txt
36 USNO-A2.0 1425-1266678422 01 13.59, +59 32 37.2EA14.1514.60 0.975152456197.327min Comm. 36lc12012.png12012.pngout12012.txt
37 USNO-A2.0 1425-1266850022 01 17.94, +59 05 21.5BY:12.7412.81 0.49760:2456545.731max Comm. 37lc03330.png03330.pngout03330.txt
38 USNO-A2.0 1425-1269378222 02 17.30, +59 19 47.8EA13.2513.66 3.12872456546.087min Comm. 38lc07363.png07363.pngout07363.txt
39 USNO-A2.0 1425-1269898522 02 28.59, +59 27 06.9LB:12.8813.01   other Comm. 39lc09826.png09826.pngout09826.txt
40 USNO-B1.0 1495-033333822 02 53.87, +59 31 26.3LB14.1514.61   other Comm. 40lc11367.png11367.pngout11367.txt
41 USNO-A2.0 1425-1271604722 03 05.26, +59 25 58.7LB:12.1512.22   other Comm. 41lc09286.png09286.pngout09286.txt
42 USNO-B1.0 1494-033305922 03 09.94, +59 28 44.0LB13.4113.78   other Comm. 42lc10350.png10350.pngout10350.txt
43 USNO-A2.0 1425-1271954422 03 12.38, +59 11 52.9LB14.6914.96   other Comm. 43lc04992.png04992.pngout04992.txt
44 USNO-A2.0 1425-1279739322 05 52.39, +59 03 46.4LB13.6613.88   other Comm. 44lc02632.png02632.pngout02632.txt
45 USNO-A2.0 1425-1281745422 06 34.84, +58 56 51.1BY15.0115.31 2.26472456552.839max  lc01039.png01039.pngout01039.txt
46 USNO-B1.0 1489-033995022 07 11.28, +58 57 00.5LB14.3614.50   other Comm. 46lc01049.png01049.pngout01049.txt

Comments:


1. MinII = 14m.14.

2. MinII = 14m.47.

3. MinII = 15m.05:.

4. MinII = 14m.93.

7. J = 7.006, H = 5 .903, K = 5.415.
The star in the NSVS database: NSVS ID 3421021. The NSVS data confirm the star's type.

8. J = 9.355, H = 8.224, K = 7.845.

9. M–m = 0.2:. J = 11.706, H = 11.128, K = 10.995.

11. MinII = 13m.93.

12. J = 9.579, H = 8.435, K = 7.957.

13. J = 9.609, H = 8.379, K = 7.839.

14. J = 9.386, H = 8.093, K = 7.556.

15. J = 9.152, H = 7.803, K = 7.276.

16. MinII = 14m.5. We observed two minima only. A twice shorter period is also possible.

17. MinII = 15m.7.

18. MinII = 15m.78.

19. J = 8.055, H = 6.901, K = 6.391.
The star in the NSVS database: NSVS ID 3423007. The NSVS data confirm the star's type.

20. MinII = 14m.83.

21. MinII = 15m.84.

23. J = 7.640, H = 6.502, K = 5.876.
The star in the NSVS database: NSVS ID 3424319. The NSVS data confirm the star's type.

24. J = 8.143, H = 6.770, K = 6.017.

25. J = 9.050, H = 7.688, K = 6.936.

26. MinII = 12m.97.

27. MinII = 13m.91. Our observations covered two minima only. Periods of 11d.601, 8d.668 or 8d.287 are also possible.

28. J = 8.438, H = 7.224, K = 6.717.

29. J = 8.551, H = 7.327, K = 6.871.
The star in the NSVS database: NSVS ID 3424943. The NSVS data confirm the star's type.

30. MinII = 16m.00.

31. The first-overtone periodicity of the star: P1 = 0d.079165. P1/P0 = 0.771.

32. MinII = 13m.78.

33. J = 9.227, H = 8.024, K = 7.482.

34. J = 7.963, H = 6.766, K = 6.273.
The star in the NSVS database: NSVS ID 3425981. The NSVS data confirm the star's type.

35. J = 8.937, H = 7.748, K =7.290.
The star in the NSVS database: NSVS ID 3426123. The NSVS data confirm the star's type.

36. MinII = 14m.26. D = 0.16.

37. J = 10.586, H = 10.180, K = 9.854.

38. MinII = 13m.64.

39. J = 8.688, H = 7.383, K = 6.685.
The star in the NSVS database: NSVS ID 3427572. The NSVS data confirm the star's type.

40. J = 9.119, H = 7.806, K = 7.238.

41. J = 7.766, H = 6.495, K = 5.948.
The star in the NSVS database: NSVS ID 3428004. The NSVS data confirm the star's type.

42. J = 8.908, H = 7.339, K = 6.512.

43. J = 9.172, H = 7.764, K = 7.138.

44. J = 8.850, H = 7.428, K = 6.927.

46. J = 8.463, H = 6.919, K = 6.274.
The star in the NSVS database: NSVS ID 3430795. The NSVS data confirm the star's type.

Remarks:
Our observations of an area in Cepheus were performed at the observatory of the Siberian State Aerospace University with a Hamilton telescope (D = 400 mm, F = 915 mm) equipped with a FLI ML9000 CCD camera (3056 × 3056 pixels, pixel size 12 μm). We obtained unfiltered CCD observations during two time intervals from September to October 2012 and from August to November 2013. Exposure times were 30 seconds for all frames. The size of the field is 2°.3 × 2°.3. The magnitudes were referred to red magnitudes of comparison stars from the USNO-A2.0 catalogue (Monet et al. 1998).

The J, H, K magnitudes are from the 2MASS catalog (Skrutskie et al. 2006). For most of the stars, the 2MASS catalog is also the source of positions. In some other cases, the positions are from the USNO-B1.0 catalog (Monet et al. 2003). We used VaST (Sokolovsky & Lebedev 2005) software to search for new variable stars. To find periods, we applied WinEfk software provided by Dr. V.P. Goranskij. Observations for several stars can also be found in the ROTSE-I/NSVS survey (Woźniak et al. 2004). For two previously known variables, NSV 13961 and V722 Cep, we present new light elements.

Acknowledgements: This publication makes use of data products from the Two Micron All Sky Survey (2MASS), which is a joint project of the UMass/IPAC-Caltech, funded by the NASA and the NSF,and of the Aladin interactive sky atlas, operated at CDS, Strasbourg, France.

References:
Monet, D.G., Bird, A., Canzian, B., et al., 1998, USNO-A2.0, A Catalogue of Astrometric Standards (U.S. Naval Observatory, Washington, DC), Centre de Données Astronomiques de Strasbourg, I/252
Monet, D.G., Levine, S.E., Casian, B., et al., 2003, USNO-B1.0, A Catalog of Astrometric Standards (U.S. Naval Observatory, Washington, DC), Centre de Données Astronomiques de Strasbourg, I/284
Skrutskie, M.F., Cutri, R.M., Stiening, R., et al., 2006, Astron. J., 131, 1163
Sokolovsky, K., Lebedev, A., 2005, in 12th Young Scientists' Conference on Astronomy and Space Physics, Kyiv, Ukraine, April 19–23, 2005, eds.: Simon, A.; Golovin, A., p.79
Woźniak, P.R., Vestrand, W.T., Akerlof, C.W., et al., 2004, Astron. J., 127, 2436


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