Peremennye Zvezdy

Article in PDF
"Peremennye Zvezdy",
Prilozhenie
,
vol. 13, N 2 (2013)

New Variable Stars in Auriga III

T. Kryachko#1, A. Samokhvalov#2, B. Satovskiy#1
#1. Astrotel Observatory, Karachay-Cherkessia, Russia;
#2. Surgut, Russia

ISSN 2221–0474

Received:   20.12.2012;   accepted:   21.02.2013
(E-mail for contact: bredfild@mail.ru, sav@surgut.ru, bs25@mail.ru)


#NameOtherCoord (J2000)TypeMaxMinSystemPeriodEpoch (JD)typeSpCommentL.CurveFind.ChartData
1 USNO-A2.0 1275-0455985605 14 39.03, +39 14 48.5EA16.7517.05*1.93372455512.4298Min Comm. 101_PC-R.png01_chart.jpg01_data.txt
2 USNO-A2.0 1275-0456263805 14 44.18, +39 22 41.6EW16.3616.84*0.400112455502.3248Min Comm. 202_PC-R.png02_chart.jpg02_data.txt
3 USNO-A2.0 1275-0456625505 14 51.12, +39 13 09.0EW14.3814.78*0.334132455496.2931Min Comm. 303_PC-R.png03_chart.jpg03_data.txt
4 USNO-A2.0 1275-0457128605 15 00.71, +38 58 57.8EW18.5019.00*0.292212455502.456Min Comm. 404_PC-R.png04_chart.jpg04_data.txt
5 USNO-A2.0 1275-0457295305 15 03.90, +39 18 46.5EA16.7017.05*1.12692455571.2139Min Comm. 505_PC-R.png05_chart.jpg05_data.txt
6 USNO-A2.0 1275-0458144705 15 20.21, +39 29 44.2RS:14.1114.22*0.73192455502.410Max Comm. 606_PC-R.png06_chart.jpg06_data.txt
7 USNO-A2.0 1275-0458245605 15 22.12, +39 20 31.8EW17.9018.52*0.285602455538.2660Min Comm. 707_PC-R.png07_chart.jpg07_data.txt
8 USNO-A2.0 1275-0460135705 15 58.52, +39 10 57.7EB16.3916.70*1.54092455573.232Min Comm. 808_PC-R.png08_chart.jpg08_data.txt
9 USNO-A2.0 1275-0460691205 16 09.22, +38 40 56.1EW15.9116.03*0.318352455512.434Max Comm. 909_PC-R.png09_chart.jpg09_data.txt
10 USNO-A2.0 1275-0460834405 16 11.90, +39 03 51.8EA16.6017.04*2.30152455540.2057Min Comm. 1010_PC-R.png10_chart.jpg10_data.txt
11 USNO-A2.0 1275-0461183805 16 18.65, +38 55 11.2DSCT14.0614.12*0.0904652455521.3565Max Comm. 1111_PC-R.png11_chart.jpg11_data.txt
12 USNO-A2.0 1275-0461375105 16 22.20, +38 50 54.9BY:14.3014.49*6.822455496.54Max Comm. 1212_PC-R.png12_chart.jpg12_data.txt
13 USNO-A2.0 1275-0461443505 16 23.61, +39 04 45.6BY:14.6814.76*0.92382455496.621Max Comm. 1313_PC-R.png13_chart.jpg13_data.txt
14 USNO-A2.0 1275-0461757905 16 29.76, +38 41 25.1EW16.8116.98*0.394812455497.273Min Comm. 1414_PC-R.png14_chart.jpg14_data.txt
15 USNO-A2.0 1275-0462579805 16 45.66, +39 16 25.0EW17.9118.68*0.331072455571.2574Min Comm. 1515_PC-R.png15_chart.jpg15_data.txt
16 USNO-A2.0 1275-0463550905 17 04.80, +39 04 20.7EA16.4516.98*2.530:2455538.2000Min Comm. 1616_PC-R.png16_chart.jpg16_data.txt
17 USNO-A2.0 1275-0464154305 17 16.70, +38 49 05.5EW17.8818.31*0.436072455571.221Min Comm. 1717_PC-R.png17_chart.jpg17_data.txt
18 USNO-A2.0 1275-0464181805 17 17.22, +39 08 42.4EA17.2417.76*0.793732455520.4077Min Comm. 1818_PC-R.png18_chart.jpg18_data.txt
19 USNO-A2.0 1275-0464221105 17 17.91, +39 14 53.4BY:14.5314.59*4.842455511.2Max Comm. 1919_PC-R.png19_chart.jpg19_data.txt
20 USNO-A2.0 1275-0465418105 17 42.00, +39 06 34.5EA14.9715.71*2.52932455521.3620Min Comm. 2020_PC-R.png20_chart.jpg20_data.txt
21 USNO-A2.0 1275-0465870905 17 51.27, +38 46 28.7BY:14.9114.98*11.62455497.3Max Comm. 2121_PC-R.png21_chart.jpg21_data.txt
22 USNO-A2.0 1275-0466049105 17 55.04, +38 44 06.7SR:14.0014.18*552455483.5Max Comm. 2222_PC-R.png22_chart.jpg22_data.txt
23 USNO-A2.0 1275-0466196305 17 57.90, +39 15 12.9EB14.1714.25*0.737262455574.622Min Comm. 2323_PC-R.png23_chart.jpg23_data.txt
24 USNO-A2.0 1275-0468168705 18 38.01, +38 41 50.7EB14.1014.81*1.35872455496.605Min Comm. 2424_PC-R.png24_chart.jpg24_data.txt

Comments:


1. Primary minimum: HJD(TT) 2455512.4298 ± 0.0006. MinII = 16m.93.

2. Primary minimum: HJD(TT) 2455502.3248 ± 0.0003. MinII = 16m.80.

3. Primary minima:
HJD(TT)±
2455496.29310.0002
2455502.30910.0003
2455503.31000.0004
2455521.35650.0002
2455529.37300.0004
MinII = 14m.76.

4. MinII = 19m.00.

5. Primary minimum: HJD(TT) 2455571.2139 ± 0.0009. MinII = 17m.03.

6. Despite its infrared colors (J–H = 0.122, H–K = 0.027 and J–K = 0.149, 2MASS), we tentatively suggest the RS: classification.

7. Primary minimum: HJD(TT) 2455538.2660 ± 0.0008. MinII = 18m.32.

8. O'Connell effect. Primary minimum: HJD(TT) 2455573.232 ± 0.002. MinII = 16m.60.

9. Primary minima:
HJD(TT)±
2455512.4340.001
2455538.2210.001
2455573.2360.001
2455574.1950.001
MinII = 16m.03.

10. Primary minimum: HJD(TT) 2455540.2057 ± 0.0003. MinII = 17m.04.

11. Maxima:
HJD(TT)±
2455496.29500.0005
2455521.35650.0005
2455537.18760.0005
2455538.18740.0006
2455538.27420.0003
2455540.26420.0005
2455571.20420.0004
2455572.19900.0004
2455573.19540.0005
2455574.18770.0005
2455596.17460.0002


12. Infrared colors J–H = 0.659, H–K = 0.207 and J–K = 0.866 (2MASS) are consistent with the K spectral type (Bessell and Brett 1988) and BY: classification.

13. Infrared colors J–H = 0.329, H–K = 0.178 and J–K = 0.507 (2MASS) are consistent with the G or K spectral type (Bessell and Brett 1988) and BY: classification.

14. MinII = 16m.97.

15. Primary minima:
HJD(TT)±
2455571.25740.0007
2455572.24890.0006
2455573.24530.0004
MinII = 18m.68.

16. Primary minimum: HJD(TT)2455538.2000 ± 0.0008. MinII = 16m.84. If the tabulated period is correct, then the orbit is eccentric, with the secondary minimum at phase 0.47.

17. Primary minimum: HJD(TT) 2455571.221 ± 0.001. MinII = 18m.28.

18. Depth of primary minimum varies. Primary minima:
HJD(TT)±
2455520.40770.0007
2455540.24860.0006
2455571.20150.0001
MinII = 17m.56.

19. Infrared colors J–H = 0.460, H–K = 0.073 and J–K = 0.533 (2MASS) are consistent with the K spectral type (Bessell and Brett 1988) and BY: classification.

20. Primary minimum: HJD(TT) 2455521.3620 ± 0.0003. MinII = 15m.39.

21. Infrared colors J–H = 0.233, H–K = 0.173 and J–K = 0.406 (2MASS) are consistent with the K: spectral type (Bessell and Brett 1988) and BY: classification.

22. Infrared colors J–H = 1.214, H–K = 0.404 and J–K = 1.618 (2MASS) are consistent with the M spectral type (Bessell and Brett 1988) and SR: classification.

23. MinII = 14m.25.

24. MinII = 14m.42:.

Remarks:
During observations of the field in Auriga, we discovered 24 new variable stars. Our observations were carried out at the Astrotel-Caucasus observatory using the 300-mm Ritchey–Chretien telescope, equipped with an unfiltered Apogee Alta U9000 CCD camera. A total of 571 images with 5-minute exposures were obtained on JD 2455503–2455601. For basic reductions for dark current, flat fields, bias, and for removing cosmic-ray hits, we used IRAF routines. For search and photometry of new variable stars, we applied VaST software by Sokolovsky and Lebedev (2005). The comparison star was USNO-A2.0 1275-04592684 = USNO-B1.0 1287-0109706 (α = 05h15m41s.84, δ = +38°42′ 02″.3 (J2000, 2MASS)), R1 = 13m.97, R2 = 13m