2021RAA....21..227Z

Query : 2021RAA....21..227Z

2021RAA....21..227Z - Research in Astron. and astroph., 21, 227 (2021/September-0)

Variable stars in the 50BiN open cluster survey. II. NGC 869.

ZHUO J., DENG L.-C., WANG K., LUO C.-Q., ZHANG X.-B., LI C.-Y., LIU C. and CHEN X.-D.

Abstract (from CDS):

This work presents a time-series photometric variability survey of the young open cluster NGC 869. More than 13 000 CCD frames in the BV filters were collected on 19 nights between 2014 November 6 and 2014 December 24. In a 20' x 20' field centered on the cluster, we detected a total of 28 stars showing photometric variability, 12 of which are new discoveries. The classifications and memberships of the variable stars are discussed according to the behaviors and periods of the light curves as well as their positions on the H-R diagram. These results conclude that 22 variable stars are probable members of the cluster while six other stars belong to the field star population. They are categorized as 18 pulsating variable stars (four β Cep, seven SPB, one β Cep/ SPB, four Be stars, and two δ Sct/ γ Dor candidates), seven eclipsing binaries (five EA and two EB) and three unknown type stars.

Abstract Copyright: © 2021 National Astronomical Observatories

Journal keyword(s): open clusters and associations - individual (NGC 869) - stars - variables - general

Simbad objects: 31

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Number of rows : 31
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NGC 869 563 Be* 02 18 19.7435303256 +57 08 46.168544724   12.524 12.2380     B1.8V 16 0
2 2MASS J02183340+5715195 * 02 18 33.4098227880 +57 15 19.550058840   13.99 13.34     ~ 2 0
3 NGC 869 725 * 02 18 33.8407844880 +57 13 38.659360548   11.937 11.6100   11.0191 B1.9III 8 0
4 NGC 869 730 * 02 18 34.3017141456 +57 15 26.540839512   13.268 12.597     ~ 5 0
5 NGC 869 778 * 02 18 39.8103690408 +57 06 59.894102772 12.09 12.4 12.072   11.660 B1.5V 21 0
6 BD+56 505 EB* 02 18 42.7728753816 +57 04 21.514973232   10.82 10.6020   9.6145 B0.5III 20 0
7 NGC 869 859 * 02 18 49.5437025648 +57 07 18.909925248 10.71 11.080 10.7850   10.3895 B2.0V 25 0
8 NGC 869 926 * 02 18 54.3430651560 +57 07 41.652815736 11.7 11.927 11.6280   11.1507 B3.1V 20 0
9 NGC 869 OpC 02 18 57.0 +57 08 02           ~ 504 0
10 NGC 869 986 V* 02 18 59.8213939440 +57 09 13.649680368 12.7 12.97 12.6210   12.1523 B3.0V 17 0
11 NGC 869 1001 * 02 19 00.3838349136 +57 04 27.181236000   10.870 10.4850   9.9653 B0.9III 16 0
12 2MASS J02190060+5713167 * 02 19 00.6146128872 +57 13 16.713847056   15.59 14.75     ~ 2 0
13 V* V615 Per EB* 02 19 01.6485064968 +57 07 19.013821536   13.401 13.047   12.5110 B5.9V 34 0
14 BD+56 521 * 02 19 01.7289279528 +57 10 43.146699744 10.73 10.844 10.3051   9.8469 B8V 32 0
15 NGC 869 1047 * 02 19 03.5818731312 +57 05 21.335080884     12.096   11.671 B2.2III 9 0
16 NGC 869 1072 * 02 19 06.0358032576 +57 09 56.428396992   13.916 13.3768   12.665 B8.0V 14 0
17 V* V617 Per El* 02 19 06.7212345648 +57 08 52.201321764 10.98 11.499 11.1780     B2.0III 23 0
18 NGC 869 1099 * 02 19 07.9787164704 +57 10 22.053330228   13.79 13.26 13.09   B9V 8 0
19 V* V618 Per EB* 02 19 11.8379891952 +57 06 40.901219676   15.175 14.6892   13.9857 B9.4V 22 0
20 NGC 869 1239 EB* 02 19 22.8151086000 +56 58 51.719242512   14.824 13.833   12.712 F7 8 0
21 NGC 869 1232 * 02 19 22.8362179656 +57 08 29.730903612     11.3250   10.8149 B1.8V 12 0
22 EM* GGA 156 Be* 02 19 28.8227174880 +57 07 04.543663836   11.564 11.003     B0-1Ve 24 0
23 NGC 869 1278 Be* 02 19 28.8928804896 +57 11 24.266861736     11.6848   11.1321 B0-1Ve 20 0
24 NGC 869 1295 a2* 02 19 32.0152370568 +57 07 18.461354592   14.247 13.7157   13.0766 ~ 14 0
25 NGC 869 1419 * 02 19 46.5431003208 +57 15 30.499453584   14.896 14.074     ~ 3 0
26 NGC 869 1438 Be* 02 19 47.8430186616 +57 06 39.543216912   11.313 11.362     B2e 19 0
27 NGC 869 1467 * 02 19 51.7323642576 +56 59 59.456769216   12.04 11.78     ~ 8 0
28 NGC 869 1516 EB* 02 20 02.9700015336 +57 11 18.680081064   11.21 10.9820   10.4386 B1.0V 20 0
29 NGC 869 1547 * 02 20 08.6790639648 +57 02 40.943373144   14.783 14.361     ~ 3 0
30 NGC 884 OpC 02 22 15.7 +57 08 59           ~ 503 0
31 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0

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