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Journal "Peremennye Zvezdy"
Peremennye Zvezdy

"Peremennye Zvezdy",
Prilozhenie,
vol. 11, N 14 (2011)

New Variable Stars in Perseus

V. Solovyov#1, A. Samokhvalov#2, B. Satovskiy#3
#1. Kazan Federal University, Russia;
#2. Surgut, Russia;
#3. Astrotel Observatory, Karachay-Cherkessia, Russia

Received:   30.12.2010;   accepted:   7.04.2011
(E-mail for contact: solo.vya@gmail.com, sav@surgut.ru, bs25@mail.ru)

#NameOtherCoord (J2000)TypeMaxMinSystemPeriodEpoch (JD)typeSpCommentL.CurveFind.ChartData
1 USNO-A2.0 1425-0422509303 14 31.68, +57 00 59.5BY15.9716.13 0.793232455080.8628Max Comm. 101_PC-R.png01_chart.jpg01_data.txt
2 USNO-B1.0 1477-013513603 15 05.44, +57 47 14.9EW18.2118.85 0.3311732455121.375Min Comm. 202_PC-R.png02_chart.jpg02_data.txt
3 USNO-B1.0 1470-011408403 15 19.50, +57 04 49.4SR:14.7915.28 144.72455214.30Max Comm. 303_PC-R.png03_chart.jpg03_data.txt
4 USNO-A2.0 1425-0424002503 15 53.29, +57 34 25.8EW14.8715,24 0.2628152455519.4924Min Comm. 404_PC-R.png04_chart.jpg04_data.txt
5 USNO-A2.0 1425-0424080903 15 58.24, +57 26 40.7HADS14.0214.36 0.0578202455081.3219Max Comm. 505_PC-R.png05_chart.jpg05_data.txt
6 USNO-A2.0 1425-0424423503 16 17.96, +57 08 58.5BY:14.2514.49 11.342455125.05Max Comm. 606_PC-R.png06_chart.jpg06_data.txt
7 USNO-A2.0 1425-0424443003 16 19.06, +57 03 42.5EW16.6016.95 0.4288832455145.3205Min Comm. 707_PC-R.png07_chart.jpg07_data.txt
8 USNO-A2.0 1425-0424610603 16 29.28, +57 03 49.4EA14.3314.77 2.105032455169.4598Min Comm. 808_PC-R.png08_chart.jpg08_data.txt
9 USNO-A2.0 1425-0424626803 16 30.35, +57 14 02.0EW16.8717.26 0.3206762455120.5641Min Comm. 909_PC-R.png09_chart.jpg09_data.txt
10 USNO-A2.0 1425-0425196403 17 05.88, +57 46 56.7EW13.3513.39 0.2993622455202.3051Min Comm. 1010_PC-R.png10_chart.jpg10_data.txt
11 USNO-A2.0 1425-0425530403 17 26.60, +57 38 00.5EW15.9516.16 0.3856322455169.5118Min Comm. 1111_PC-R.png11_chart.jpg11_data.txt
12 USNO-A2.0 1425-0426664603 18 38.51, +57 20 26.0EB13.8013.88 1.657122455494.399Min Comm. 1212_PC-R.png12_chart.jpg12_data.txt
13 USNO-A2.0 1425-0426851703 18 50.58, +57 08 22.2EW16.1716.55 0.4019452455116.5799Min Comm. 1313_PC-R.png13_chart.jpg13_data.txt
14 USNO-A2.0 1425-0427686203 19 42.37, +57 04 49.8EB17.2617.64 0.7614522455163.3834Min Comm. 1414_PC-R.png14_chart.jpg14_data.txt
15 USNO-A2.0 1425-0428311103 20 23.65, +57 06 44.6EA14.6514.80 2.83432455116.402Min Comm. 1515_PC-R.png15_chart.jpg15_data.txt

Comments:


1. Infrared colors J–H = 0.622, H–K = 0.219, J–K = 0.841 (2MASS) are consistent with the dK spectral type (Bessell and Brett 1988) and BY classification.

2. Primary minima:
HJD(TT)±
2455116.416 0.002
2455120.382 0.004
2455121.375 0.001
2455122.368 0.003
2455123.358 0.003
2455144.230 0.002
2455230.333 0.001
2455516.461 0.002
MinII=18m.83.

3. IRAS 03114+5653. Infrared colors J–H = 1.598, H–K = 0.765, J–K = 2.363 (2MASS) are consistent with the gM spectral type (Bessell and Brett 1988) and SR: classification. Maximum: HJD(TT) 2455214.30 ± 0.09.

4. O'Connell effect. Primary minima:
HJD(TT)±
2455081.38270.0006
2455113.44470.0008
2455115.54750.0005
2455120.27880.0004
2455120.54170.0004
2455123.43270.0004
2455144.45730.0003
2455145.50930.0004
2455162.32830.0006
2455162.59100.0004
2455163.37960.0003
2455168.37250.0010
2455169.42420.0003
2455184.40480.0004
2455196.22900.0005
2455202.27660.0004
2455230.39680.0004
2455254.31350.0004
2455260.35850.0007
2455466.40520.0002
2455467.45530.0004
2455494.26330.0005
2455494.52610.0006
2455504.51330.0004
2455516.60430.0009
2455517.39080.0003
2455518.44190.0005
2455519.49240.0002
MinII = 15m.20.

5. Maxima:
HJD(TT)±
2455081.323 0.003
2455081.3806 0.0005
2455081.4388 0.0005
2455084.330 0.002
2455084.3866 0.0009
2455084.4442 0.0002
2455085.370 0.001
2455109.364 0.001
2455109.424 0.002
2455113.470 0.002
2455142.3792 0.0006
2455168.225 0.001
2455168.3411 0.0009
2455168.399 0.001
2455168.4564 0.0001
2455168.5140 0.0006
2455168.5709 0.0002
2455169.2085 0.0006
2455169.3813 0.0007
2455169.440 0.001
2455169.4972 0.0008
2455169.5548 0.0009
2455169.6125 0.0006
2455230.4393 0.0003
2455230.4972 0.0009
2455254.2036 0.0008
2455254.261 0.001
2455254.3183 0.0005
2455466.2862 0.0004
2455466.4028 0.0008
2455466.4601 0.0007
2455467.3851 0.0003
2455494.2721 0.0009
2455494.3291 0.0004
2455494.5028 0.0006
2455495.5443 0.0006
2455504.3353 0.0008
2455519.3673 0.0009
2455519.425 0.001


6. Infrared colors J–H = 0.709, H–K = 0.191, J–K = 0.900 (2MASS) are consistent with the K spectral type (Bessell and Brett 1988) and BY: classification.

7. Primary minima:
HJD(TT)±
2455081.418 0.002
2455120.45090.0007
2455123.448 0.001
2455144.461 0.001
2455145.32050.0008
2455162.47710.0010
2455163.339 0.001
2455169.341 0.002
2455202.361 0.002
2455230.24000.0008
2455254.25550.0009
2455467.415 0.001
2455518.45070.0005
MinII = 16m.95.

8. MinII = 14m.75.

9. Primary minima:
HJD(TT)±
2455081.437 0.001
2455109.34000.0002
2455113.509 0.002
2455115.426 0.002
2455116.395 0.002
2455120.56410.0008
2455121.52440.0009
2455122.48840.0007
2455123.44630.0009
2455144.29060.0007
2455145.253 0.001
2455145.578 0.001
2455162.568 0.003
2455163.53500.0009
2455230.233 0.001
2455495.434 0.002
2455497.359 0.001
2455504.4040.002
2455517.55260.0009
2455518.5180.002
MinII = 17m.26.

10. Primary minima:
HJD(TT)±
2455116.388 0.003
2455121.480 0.001
2455162.48740.0010
2455168.477 0.001
2455202.30510.0005
2455230.442 0.002
2455466.342 0.001
2455504.35710.0007
MinII = 13m.39.

11. Primary minima:
HJD(TT)±
2455109.355 0.002
2455114.374 0.001
2455115.53010.0008
2455116.302 0.002
2455144.454 0.001
2455145.21940.0009
2455162.577 0.002
2455169.51180.0004
2455202.297 0.001
2455230.44550.0005
2455466.459 0.001
2455518.51100.0009
MinII = 16m.16.

12. Primary minimum: HJD(TT) 2455494.399 ± 0.002. MinII = 13m.83.

13. O'Connell effect. Primary minima:
HJD(TT)±
2455084.420 0.001
2455109.345 0.002
2455115.375 0.002
2455116.57990.0005
2455121.40450.0006
2455123.41330.0005
2455142.30620.0010
2455144.31550.0008
2455145.52210.0004
2455162.40150.0008
2455163.20130.0010
2455163.60620.0007
2455169.236 0.001
2455230.32970.0008
2455467.47840.0007
2455504.46300.0009
2455516.51240.0007
2455518.52340.0009
MinII = 16m.52.

14. Primary minima:
HJD(TT)±
2455115.404 0.001
2455121.509 0.002
2455144.357 0.001
2455163.38340.0007
2455466.44090.0010
2455517.446 0.001
MinII = 17m.60.

15. Primary minimum: HJD(TT) 2455116.402 ± 0.001.

Remarks:
During observations of a field in Perseus, we discovered fifteen new variable stars. Our observations were carried out at the Astrotel-Caucasus observatory, located at the Astronomical station of the Kazan Federal university, using the 300-mm Ritchey-Chretien telescope, equipped with an unfiltered Apogee Alta U9000 CCD camera. A total of 2316 images with 5-minute exposures were obtained on JD 2455080–2455519. For basic reductions for dark current, flat fields, bias, and for removing cosmic rays 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 1425-04237176 = USNO-B1.0 1473-0129296 (α=03h15m37s.41, δ=+57°19′ 36″.5, J2000; 2MASS), R1 = 14m.33, R2 = 14m.60 (USNO-B1.0). Unfiltered magnitudes were calibrated using the comparison star, assuming Rcomp = 14m.465. The coordinates of the variable stars in the table were drawn from the 2MASS catalogue (Skrutskie et al. 2006). To search for period and derive epochs of extrema, we use Peranso software.

Acknowledgements: We would like to thank S. V. Antipin for helpful discussion.

References:
Bessell, M.S., Brett, J.M., 1988, PASP, 100, 1134
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


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