Journal "Peremennye Zvezdy"

"Peremennye Zvezdy",
Prilozhenie,
vol. 19, N 1 (2019)

New variable stars in Perseus: area of 2°.3×2°.3, center α=02h00m δ=59°00′. Part I

E. G. Lapukhin^#1, A. M. Zubareva^#2,3, Y. Wang^#1, M. Dokuchaeva^#1, S. Kartashov^#1
#1. Reshetnev Siberian State University of Science and Technology, 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

DOI: 10.24411/2221-0474-2019-00004

Received: 10.03.2019; accepted: 29.05.2019
(E-mail for contact: slovoktk@mail.ru)

#	Other	Coord (J2000)	Type	Max	Min	Period	Epoch (JD)	type	Comment	L.Curve	Find.Chart	Data
1	2MASS 01523716+5856271	01:52:37.17, +58:56:27.3	EA	13.591	13.704	4.2056529	2456219.342	min		17863.png	ch17863.png	out17863.dat
2	2MASS 01523787+5906593	01:52:37.90, +59:06:59.8	EA	15.555	16.11	1.829427	2456968.249	min	Comm. 2	21076.png	ch21076.png	out21076.dat
3	2MASS 01525558+5758028	01:52:55.62, +57:58:03.2	BY:	13.614	13.66	0.877824	2458041.685	min		00048.png	ch00048.png	out00048.dat
4	2MASS 01525736+5924128	01:52:57.40, +59:24:13.0	EW	14.871	15.068	0.284103	2456967.141	min	Comm. 4	27255.png	ch27255.png	out27255.dat
5	2MASS 01542471+5806375	01:54:24.72, +58:06:37.9	EA	12.734	13.017	2.947915	2457993.355	min	Comm. 5	02238.png	ch02238.png	out02238.dat
6	2MASS 01550686+5956116	01:55:06.87, +59:56:11.9	EW	15.457	15.457	0.672292	2456967.555	min	Comm. 6	31996.png	ch31996.png	out31996.dat
7	2MASS 01552768+5812112	01:55:27.73, +58:12:11.3	BY:	13.609	13.673	0.340049:	2456967.157	max		03663.png	ch03663.png	out03663.dat
8	2MASS 01553673+5806051	01:55:36.75, +58:06:05.5	EA	12.591	12.866	2.131429	2456967.249	min	Comm. 8	01802.png	ch01802.png	out01802.dat
9	2MASS 01554562+5914448	01:55:45.63, +59:14:45.0	EA	14.202	14.414	2.853126	2458036.198	min		21913.png	ch21913.png	out21913.dat
10	2MASS 01571684+5809047	01:57:16.84, +58:09:04.8	EA	15.088	15.492	0.942553	2457994.259	min	Comm. 10	02498.png	ch02498.png	out02498.dat
11	2MASS 01574428+6010049	01:57:44.29, +60:10:04.7	EW	14.997	15.605	0.2810319	2456219.55	min	Comm. 11	26209.png	ch26209.png	out26209.dat
12	2MASS 01584060+5833226	01:58:40.62, +58:33:22.8	EA	14.443	14.535	0.912906	2456219.314	min		09448.png	ch09448.png	out09448.dat
13	2MASS 02002726+5811506	02:00:27.23, +58:11:50.4	EW	15.887	16.119	0.395088	2456227.322	min	Comm. 13	02790.png	ch02790.png	out02790.dat
14	2MASS 02034839+5838072	02:03:48.40, +58:38:07.5	EA	13.631	13.727	1.666808	2456928.433	min		10104.png	ch10104.png	out10104.dat
15	2MASS 02035862+5859236	02:03:58.70, +58:59:24.2	SR	12.763	13.165	94	2456892.4	other		16651.png	ch16651.png	out16651.dat
16	2MASS 02042874+5945477	02:04:28.77, +59:45:47.9	EA	12.973	13.282	0.916802	2458055.325	min	Comm. 16	36513.png	ch36513.png	out36513.dat
17	2MASS 02045130+5910113	02:04:51.29, +59:10:11.7	EW	14.134	14.233	1.054604	2456181.701	min	Comm. 17	19691.png	ch19691.png	out19691.dat
18	2MASS 02050113+5955042	02:05:01.19, +59:55:05.4	RRAB	15.556	16.357	0.3662276	2457994.221	max		33831.png	ch33831.png	out33831.dat
19	2MASS 02060139+5851318	02:06:01.40, +58:51:32.1	EA	13.477	13.867	4.82119	2456929.375	min	Comm. 19	13652.png	ch13652.png	out13652.dat
20	2MASS 02065780+5820331	02:06:57.81, +58:20:33.2	EA	14.376	14.747	1.72346	2456227.453	min	Comm. 20	04354.png	ch04354.png	out04354.dat
21	2MASS 02074006+5958080	02:07:40.03, +59:58:07.9	EA	15.082	15.754	1.4103931	2456182.334	min	Comm. 21	33057.png	ch33057.png	out33057.dat

Comments:

02. Min_II = 16^m.07.

04. Min_II = 15^m.01.

05. Min_II = 13^m.00.

06. Min_II = 15^m.61.

08. Min_II = 12^m.87.

10. Min_II = 15^m.15.

11. Min_II = 15^m.6:.

13. Min_II = 16^m.119.

16. Min_II = 13^m.06.

17. Min_II = 14^m.24.

19. Min_II = 13^m.86. Min_I – Min_II = 0.52 P.

20. Min_II = 14^m.43.

21. Min_II = 15^m.11.

Remarks:
We give a list of new variable stars in Perseus: area of 2°.3×2°.3, centered at α=02h00m δ=59°00′.
Our observations of the area in Perseus were performed at the observatory of Reshetnev Siberian State University of Science and Technology with a Hamilton telescope (D = 400 mm, F = 915 mm), equipped with an FLI ML9000 CCD chip (3056×3056 pixels, pixel size 12 μm). Exposures of all frames were 30 seconds. CCD-images were 2°.3 × 2°.3 square.
All unfiltered CCD-observations were obtained in the autumns of 2012, 2013, 2014 and 2017.
The magnitudes were referred to the unfiltered red band from the UCAC4 catalog (Zacharias et al., 2013) using VaST package (Sokolovsky & Lebedev, 2018). We also used VaST to search for new variable stars. To find periods, we applied WinEfk software provided by Dr. V.P. Goranskij.
This work was supported by Ministry of Education and Science of Russian Federation in the frame of state contract 3.6822.2017/7.8.

Acknowledgements: The authors wish to thank Dr. V.P. Goranskij for providing his efficient period-search software and Dr. Kirill Sokolovsky for providing VaST (a software package for detection of variable objects in a series of astronomical images).

References:
Sokolovsky, K. V., Lebedev, A. A., 2018, Astron. and Computing, 22, 28
Zacharias, N., Finch, C. T., Girard, T. M. et al., 2013, Astron. J., 145, 44