Peremennye Zvezdy

"Peremennye Zvezdy",
Prilozhenie
,
vol. 13, N 5 (2013)

New Variable Stars I

A. V. Khruslov
Institute of Astronomy, Russian Academy of Sciences, Moscow, Russia

Received:   9.12.2012;   accepted:   5.03.2013
(E-mail for contact: khruslov@bk.ru)


#NameOtherCoord (J2000)TypeMaxMinSystemPeriodEpoch (JD)typeSpCommentL.CurveFind.ChartData
1 TYC 2798 01443 100 56 17.24, +38 10 59.5EA10.73:11.04:SWASP1.465132453968.642min Comm. 11.PNGchart1.PNGNSVS 3796478 NSVS 6371694 1SWASP_data_1.txt
2 TYC 2798 01339 100 57 30.89, +37 38 19.0EW10.24:10.45:SWASP0.3596172454000.747min Comm. 22.PNGchart2.PNGNSVS 3797390 NSVS 6372550 1SWASP_data_2.txt
3 GSC 2300-0037301 28 19.51, +34 08 29.4EW13.3513.85CV0.4089782454400.750min Comm. 33.PNGchart3.PNGNSVS 6448135 CSS_data_3.txt 1SWASP_data_3.txt
4 GSC 2818-0003201 33 21.11, +39 37 22.7EA13.2513.87CV1.0490152454050.510min Comm. 44.PNGchart4.PNGNSVS 3832703 CSS_data_4.txt 1SWASP_data_4.txt
5 GSC 2298-0122001 42 10.28, +33 17 41.7EW13.8714.12CV0.3084052454400.618min Comm. 55.PNGchart5.PNGNSVS 6459193 NSVS 6469620 CSS_data_5.txt 1SWASP_data_5.txt
6 GSC 2829-0134202 05 12.69, +39 10 24.7EW13.2214.10CV0.36632952454000.853min Comm. 66.PNGchart6.PNGNSVS 3970725 CSS_data_6.txt 1SWASP_data_6.txt
7 GSC 2309-0087602 07 44.18, +30 42 34.3EW13.3513.74CV0.59990472454700.592min Comm. 77.PNGchart7.PNGNSVS 6489888 CSS_data_7.txt 1SWASP_data_7.txt
8 GSC 2328-0010002 33 17.23, +32 04 30.8EW12.312.6CV0.3507892454000.891min Comm. 88.PNGchart8.PNGNSVS 6561926 CSS_data_8.txt 1SWASP_data_8.txt
9 GSC 2846-0063102 52 37.94, +39 20 21.7EW13.6114.21CV0.3782932454000.523min Comm. 99.PNGchart9.PNGNSVS 4019697 CSS_data_9.txt 1SWASP_data_9.txt
10 GSC 4344-0179805 51 04.50, +69 18 13.6EW13.5714.10CV0.3530342451460.725min Comm. 1010.PNGchart10.PNGNSVS 560093 NSVS 646656 CSS_data_10.txt
11 TYC 2522 02117 111 10 26.95, +36 32 43.8EA11.1811.42SWASP2.752592454192.428min Comm. 1111.PNGchart11.PNGNSVS 7573735 NSVS 4965700 1SWASP_data_11.txt
12 TYC 3465 00523 114 11 51.58, +45 31 08.4ELL10.9010.99SWASP0.32373972454219.448min Comm. 1212.PNGchart12.PNGNSVS 5097680 NSVS 5114836 1SWASP_data_12.txt
13 TYC 3472 00139 114 26 09.44, +46 16 07.0RS12.4512.65SWASP0.2905292453852.525max Comm. 1313.PNGchart13.PNGNSVS 5102389 NSVS 5120060 NSVS 5126896 1SWASP_data_13.txt
14 GSC 3481-0089315 08 05.71, +46 10 29.7EW13.7114.06CV0.2699492454800.540min Comm. 1414.PNGchart14.PNGNSVS 5141620 NSVS 5157845 NSVS 5177641 CSS_data_14.txt 1SWASP_data_14.txt
15 GSC 4183-0103415 14 00.94, +64 55 34.0EA14.0814.86CV2.4578032451460.833min Comm. 1515.PNGchart15.PNGNSVS 2770706 NSVS 2786249 CSS_data_15.txt
16 GSC 3483-0110015 30 57.52, +47 03 38.0EA12.8513.45CV0.9693622454800.680min Comm. 1616.PNGchart16.PNGNSVS 5186554 CSS_data_16.txt 1SWASP_data_16.txt
17 GSC 3496-0093515 46 51.96, +51 52 39.2EA12.9513.3CV5.66432451450.77min Comm. 1717.PNGchart17.PNGNSVS 5192073 NSVS 5203396 NSVS 2812793 CSS_data_17.txt
18 GSC 3060-0156515 55 06.08, +42 54 01.8EA14.3815.30CV1.341192453170.435min Comm. 1818.PNGchart18.PNGNSVS 5177041 NSVS 5225601 CSS_data_18.txt 1SWASP_data_18.txt
19 GSC 3490-0150615 58 54.15, +46 35 49.0EW13.2313.67CV0.27203022454600.728min Comm. 1919.PNGchart19.PNGNSVS 5207156 CSS_data_19.txt 1SWASP_data_19.txt
20 GSC 3494-0128316 04 18.00, +47 32 51.6EW14.5414.81CV0.2897382454800.555min Comm. 2020.PNGchart20.PNGNSVS 5209725 CSS_data_20.txt
21 GSC 3491-0165616 08 51.30, +46 18 46.7EW13.2013.44CV0.3802962454297.458min Comm. 2121.PNGchart21.PNGNSVS 5211555 NSVS 5232682 CSS_data_21.txt 1SWASP_data_21.txt
22 GSC 4192-0235416 22 21.55, +64 22 51.8EW:13.6613.92CV0.34931852451460.695min Comm. 2222.PNGchart22.PNGNSVS 2848698 NSVS 2868052 CSS_data_22.txt
23 GSC 3505-0173016 34 50.67, +51 17 02.7EW13.2313.57CV0.3546942454800.578min Comm. 2323.PNGchart23.PNGNSVS 5272088 CSS_data_23.txt 1SWASP_data_23.txt
24 GSC 4194-0083117 07 08.14, +64 14 02.0RRAB14.5815.25CV0.57984412455000.975max Comm. 2424.PNGchart24.PNGNSVS 2882424 NSVS 2863761 CSS_data_24.txt
25 USNO-A2.0 1575-0376179717 11 05.98, +72 15 12.7RRAB>14.6415.33CV0.4801272451460.611max Comm. 2525.PNGchart25.PNGNSVS 1087214 CSS_data_25.txt
26 GSC 3887-0021817 12 23.47, +54 02 52.2EW14.1014.51CV0.2868512454800.599min Comm. 2626.PNGchart26.PNGNSVS 2907177 NSVS 5306377 CSS_data_26.txt 1SWASP_data_26.txt
27 GSC 4198-0081217 13 00.64, +61 37 21.3EW14.1214.67CV0.29430782455000.668min Comm. 2727.PNGchart27.PNGNSVS 2883803 CSS_data_27.txt 1SWASP_data_27.txt
28 GSC 3899-0038417 15 20.88, +58 28 37.9EW12.0112.65CV0.4095222454700.642min Comm. 2828.PNGchart28.PNGNSVS 2909777 CSS_data_28.txt 1SWASP_data_28.txt
29 GSC 4206-0000717 17 33.31, +64 59 52.1EW13.36<13.76CV0.32400232451440.716min Comm. 2929.PNGchart29.PNGNSVS 2866325 NSVS 2886359 CSS_data_29.txt
30 USNO-A2.0 1200-0858729617 42 34.79, +33 23 23.0EW14.1814.77CV0.36397452454700.617min Comm. 3030.PNGchart30.PNGNSVS 8051542 CSS_data_30.txt 1SWASP_data_30.txt
31 TYC 2634 00567 118 16 28.99, +36 44 55.5RRC12.3512.80CV0.2971012454700.614max Comm. 3131.PNGchart31.PNGNSVS 8102062 CSS_data_31.txt 1SWASP_data_31.txt
32 GSC 2748-0156922 41 47.80, +36 24 56.0EB13.5013.93CV0.41087772454800.894min Comm. 3232.PNGchart32.PNGNSVS 8914545 CSS_data_32.txt 1SWASP_data_32.txt
33 GSC 3214-0085622 44 19.24, +37 51 51.4EW13.1013.50CV0.5204612454000.699min Comm. 3333.PNGchart33.PNGNSVS 8917523 NSVS 8917524 NSVS 6119936 CSS_data_33.txt 1SWASP_data_33.txt
34 GSC 2758-0109223 03 06.37, +33 51 51.2EW13.8014.23CV0.39339152454700.501min Comm. 3434.PNGchart34.PNGNSVS 9006581 CSS_data_34.txt 1SWASP_data_34.txt
35 GSC 2755-0012023 06 28.11, +33 40 09.5EW13.7214.42CV0.39703622454700.546min Comm. 3535.PNGchart35.PNGNSVS 9010076 CSS_data_35.txt 1SWASP_data_35.txt
36 GSC 3221-0156223 10 53.83, +40 03 24.5EW13.1013.40CV0.6684752454300.644min Comm. 3636.PNGchart36.PNGNSVS 6151416 CSS_data_36.txt 1SWASP_data_36.txt
37 GSC 2759-0076223 11 21.68, +35 23 52.3EW13.9514.35CV0.3402652454700.660min Comm. 3737.PNGchart37.PNGNSVS 9014838 CSS_data_37.txt 1SWASP_data_37.txt
38 GSC 3217-0169823 18 45.94, +38 49 21.8EW13.1813.27SWASP0.29279852454355.445min Comm. 3838.PNGchart38.PNGNSVS 6160380 NSVS 6221543 NSVS 9021426 NSVS 3595155 CSS_data_38.txt 1SWASP_data_38.txt

Comments:


1. D = 0.17 P. MinII = 10m.81: (SWASP). Combined brightness of three stars, TYC 2798 01443 1 (= var), TYC 2798 00986 1, and GSC 2798-01302 was measured in the NSVS and SWASP, making the corresponding amplitudes much too low. The ROTSE data with photometric correction flags were kept for the analysis. I identify variability with TYC 2798 01443 1 because, in the 1SWASP survey, the object 1SWASP J005617.23+381059.5 that corresponds to TYC 2798 01443 1 has the largest amplitude compared to the 1SWASP objects corresponding to the two neighbors.

2. MinII = 10m.44: (SWASP). Combined brightness of two stars, TYC 2798 01339 1 (= var) and TYC 2798 01223 1, was measured in the NSVS and SWASP, and thus the corresponding amplitudes are much too low. The amplitude of the 1SWASP object that corresponds to the variable considerably exceeds the amplitude of its 1SWASP neighbor.

3. MinII = 13m.75 (CV). Combined brightness of two stars, GSC 2300-00373 (= var) and GSC 2300-00471, is presented in the NSVS and SWASP data, and thus the corresponding amplitudes are considerably too low.

4. D = 0.16 P. MinII = 13m.33 (CV). Combined brightness of two stars, GSC 2818-00032 (= var) and GSC 2818-00315, is presented in the NSVS and SWASP data, and thus the corresponding amplitudes are considerably too low.

5. MinII = 14m.08 (CV). Combined brightness of two stars, GSC 2298-01220 (= var) and a fainter one, GSC 2298-00996, was measured in the NSVS and SWASP; the corresponding amplitudes are somewhat too low. The light elements from the NSVS data are: JD(min) = 2451480.623 + 0.3084×E. The ROTSE data with photometric correction flags were kept for the analysis.

6. MinII = 13m.98 (CV). Combined brightness of two stars, GSC 2829-01342 (= var) and GSC 2829-01108, was measured in the NSVS and SWASP, and thus the corresponding amplitudes are considerably too low.

7. MinII = 13m.70 (CV). From the 1SWASP data, 13.72–14.09, MinII = 14m.07. The ROTSE data with photometric correction flags were kept for the analysis.

8. Combined brightness of two stars, GSC 2328-00100 (= var) and TYC 2328 00104 1, was measured in the NSVS and SWASP, and thus the corresponding amplitudes are considerably too low.

9. MinII = 14m.21 (CV). Combined brightness of two stars, GSC 2846-00631 (= var) and the fainter USNO-A2.0 1275-01820135, was measured in the NSVS and SWASP, and thus the corresponding amplitudes are somewhat too low. The ROTSE data with photometric correction flags were kept for the analysis.

10. From the ROTSE-I/NSVS data, 13.6–14.0, MinII = 13m.95 in the R band. The ROTSE data with photometric correction flags were kept for the analysis.

11. D = 0.04 P. From the ROTSE-I/NSVS data, 11.05–11.30 in the R band.

12. MinII = 10m.99 (SWASP). From the ROTSE-I/NSVS data, 10.97&ndash11.06, MinII = 11m.04 in the R band.

13. Double wave. 12.15–12.35 in the R band from the ROTSE-I/NSVS data. According to NSVS data, the elements are: JD(max) = 2451400.730 + 0.29053×E. 1RXS J142610.2+461601. B–V = 1.447 (Tycho2), J–H = 0.619 (2MASS). A star with a considerable proper motion (in the Tycho-2 catalog, pmRA (mas/yr) = 93.2; pmDec (mas/yr) = –77.7).

14. MinII = 14m.05 (CV). From the 1SWASP data, 13.9–14.2; from the ROTSE-I/NSVS data, 14.0–14.3 in the R band. The ROTSE data with photometric correction flags were kept for the analysis.

15. D = 0.16: P. Combined brightness of two stars, GSC 4183-01034 (= var) and the brighter one, GSC 4183-00077, was measured in the NSVS, and thus the corresponding amplitude is much too low.

16. D = 0.15 P. MinII = 13m.00 (CV). From the ROTSE-I/NSVS data, 13.15–13.65, MinII = 13m.25 in the R band.

17. D = 0.09 P. MinII = 13m.1 (R). From the Catalina surveys data, 12.9–13.2 in the CV band.

18. D = 0.08 P. MinII = 14m.61: (CV). Combined brightness of two stars, GSC 3060-01565 (= var) and GSC 3060-01095, was measured in the NSVS and SWASP, and thus the corresponding amplitudes are much too low. The ROTSE data with photometric correction flags were kept for the analysis.

19. MinII = 13m.67 (CV). Combined brightness of two stars, GSC 3490-01506 (= var) and GSC 3490-00874, was measured in the NSVS and SWASP, and thus the corresponding amplitudes are considearbly too low. The ROTSE data with photometric correction flags were kept for the analysis.

20. MinII = 14m.74 (CV). According to NSVS data, the light elements are: JD(min) = 2451400.572: + 0.28974×E.

21. MinII = 13m.41 (CV). Only data for JD 2454297 were taken from the SWASP data; the rest of the data have poor quality and large scatter. According to NSVS data, the light elements are: JD(min) = 2451450.850 + 0.3803×E. The ROTSE data with photometric correction flags were kept for the analysis.

22. MinII = 13m.92 (CV). From the ROTSE-I/NSVS data, 13.55–13.75 in the R band. The NSVS probably presents combined brightness for two stars, GSC 4192-02354 (= var) and GSC 4192-01340, thus the corresponding amplitude is somewhat too low.

23. MinII = 13m.50 (CV). From the 1SWASP data, 13.48–13.78, MinII = 13m.74; from the ROTSE-I/NSVS data, 13.5–13.9, MinII = 13m.85 in the R band. According to NSVS data, the light elements are: JD(min) = 2451400.680 + 0.35469×E.

24. M–m = 0.17 P. J–H = 0.310 (2MASS).

25. From the ROTSE-I/NSVS data, 14.3–15.0 in the R band. J–H = 0.026 (2MASS).

26. MinII = 14m.50 (CV). From the 1SWASP data, 14.42–14.82, MinII = 14m.79; from the ROTSE-I/NSVS data, 14.25–14.6 in the R band . According to NSVS data, the light elements are: JD(min) = 2451400.528 + 0.28685×E. The ROTSE data with photometric correction flags were kept for the analysis.

27. MinII = 14m.60 (CV). From the ROTSE-I/NSVS data, 14.3–14.8 in the R band. The ROTSE data with photometric correction flags were kept for the analysis.

28. Combined brightness of three stars: GSC 3899-00384 (= var), GSC 3899-01237, and GSC 3899-00288 was measured in the NSVS and 1SWASP data, the corresponding amplitudes are too low. 1RXS J171519.4+582840.

29. Combined brightness of two stars, GSC 4206-00007 (= var) and GSC 4206-00584, was measured in the NSVS, and thus the corresponding amplitude is too low. The minima are of the same depth. The ROTSE data with photometric correction flags were kept for the analysis.

30. MinII = 14m.73 (CV). Combined brightness of two stars, USNO-A2.0 1200-08587296 (= var) and GSC 2611-00682, was measured in the NSVS and 1SWASP, the corresponding amplitudes are somewhat too low. The ROTSE data with photometric correction flags were kept for the analysis.

31. M–m = 0.39 P. Combined brightness of two stars, TYC 2634 00567 1 (= var) and GSC 2634-00427, was measured in the NSVS and 1SWASP, thus the corresponding amplitudes are considerably too low. J–H = 0.125 (2MASS), B–V = 0.223 (Tycho2).

32. MinII = 13m.79 (CV). Combined brightness of two stars, GSC 2748-01569 and GSC 2748-01141, was measured in the NSVS and SWASP, and thus the corresponding amplitudes are somewhat too low. The ROTSE data with photometric correction flags were kept for the analysis.

33. MinII = 13m.47 (CV). From the 1SWASP data, 13.33–13.69, MinII = 13m.65; from the RORSE-I/NSVS dat, 13.3–13.7 in the R band. The ROTSE data with photometric correction flags were kept for the analysis. The star has a faint close companion GSC 3214-00529.

34. The depth of MinII varies in the CSS data. From the 1SWASP data, 14.12–14.38, MinII = 14m.35; from the ROTSE-I/NSVS data, 13.95–14.3 in the R band. According to NSVS data, the light elements are: JD(min) = 2451460.502 + 0.39339×E.

35. According to CSS data, the system's mean brightness varies. Combined brightness of two stars, GSC 2755-00120 (= var) and USNO-A2.0 1200-19695639, was measured in the NSVS and SWASP, and thus the corresponding amplitudes are somewhat too low.

36. According to 1SWASP, the minima have the same depth. From the 1SWASP data, 13.25–13.50 from the 1SWASP data; from the ROTSE-I/NSVS data, 13.4–13.65 in the R band. The star has a faint close companion GSC 3221-00976.

37. MinII = 14m.30 (CV). From the 1SWASP data, 14.3–14.65. According to NSVS data, the light elements are: JD(min) = 2451440.598 + 0.34027×E.

38. MinII = 13m.25 (SWASP). From the Catalina surveys data, 12.84–12.98, MinII = 12m.95 in the CV band. From the ROTSE-I/NSVS data, 13.31–13.42, MinII = 13m.38 in the R band.

Remarks:
I present a discovery of 38 new variable stars. My search for variables was carried out in the publicly available data of the Northern Sky Variability Survey (NSVS , Wozniak et al. 2004). Besides, to improve classification and light element, I analyzed all available observations of these stars from the Catalina Surveys (Drake et al. 2009) and SuperWASP (Butters et al. 2010).

Many of the variables presented in this paper are close visual pairs that cannot be separated with the low resolution of the surveys like NSVS or 1SWASP. Data from the Catalina surveys, which have resolution as good as 1–2 arcseconds, provide a possibility to solve this problem. In these cases, combined brightness of several stars was measured in the NSVS and 1SWASP, so that the resulting amplitude is too low and the variable's mean brightness appears much higher than in reality; for this reason, only CV (Catalina) magnitudes are tabulated for such stars. In our analysis of 1SWASP data, nights with a large scatter of data points around the light curve were disregarded.

These observations were analyzed using the period-search software developed by Dr. V.P. Goranskij for Windows environment. The coordinates were drawn either from the Tycho-2 or from the 2MASS catalogs.

The SuperWASP observations are available as FITS tables, which were converted into ASCII tables using the OMC2ASCII program as described by Sokolovsky (2007).

Acknowledgements: Thanks are due to Dr. K.V. Sokolovsky for his advice concerning data retrieving. The author wishes to thank Dr. V.P. Goranskij for providing his software.

References:
Butters, O.W., West, R.G., Anderson, D.R., et al., 2010, Astron. and Astrophys., 520, L10
Drake, A.J., Djorgovski, S.G., Mahabal, A., et al., 2009, Astrophys. J., 696, 870
Sokolovsky, K.V., 2007, Perem. Zvezdy Prilozh., 7, No. 30
Wozniak, P.R., Vestrand, W.T., Akerlof, C.W., et al., 2004, Astron. J., 127, 2436



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