2006AJ....132.1177P

Query : 2006AJ....132.1177P

2006AJ....132.1177P - Astron. J., 132, 1177-1188 (2006/September-0)

Survey for transiting extrasolar planets in stellar systems. IV. Variables in the field of NGC 1245.

PEPPER J. and BURKE C.J.

Abstract (from CDS):

The Survey for Transiting Extrasolar Planets in Stellar Systems (STEPSS) project is a search for planetary transits in open clusters. In this paper we analyze the STEPSS observations of the open cluster NGC 1245 to determine the variable-star content of the cluster. Out of 6787 stars observed with V<22, of which ∼870 are cluster members, we find 14 stars with clear intrinsic variability that are potential cluster members and 29 clear variables that are not cluster members. None of these variables have been previously identified. We present light curves, finder charts, and stellar/photometric data on these variable objects. Several of the interacting binaries have estimated distances consistent with the cluster distance determined from isochrone fits to the color-magnitude diagram. Four stars at the main-sequence turnoff of the cluster have light curves consistent with γ Doradus variability. If these γ Doradus candidates are confirmed, they represent the oldest and coolest members of this class of variable discovered to date.

Abstract Copyright: ∼

Journal keyword(s): Stars: Binaries: General - Stars: Variables: Other - Surveys - Techniques: Photometric

Nomenclature: Tables 1, 2: STEPSS NGC 1245 NNNNN N=40 added.

Simbad objects: 53

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Number of rows : 53
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 ZTF J031348.53+471602.6 BY* 03 13 48.5357381376 +47 16 02.673395112   18.25 17.04   15.64 ~ 3 0
2 ATO J048.4621+47.1391 EB* 03 13 50.9112089568 +47 08 20.910785964   16.80 15.98   14.98 ~ 5 0
3 STEPSS NGC 1245 50209 V* 03 13 51.3155920536 +47 14 25.960957044   17.94 17.33   16.43 ~ 1 0
4 ZTF J031352.02+470850.5 RS* 03 13 52.0238366472 +47 08 50.443191600   17.45 16.62   15.52 ~ 3 0
5 2MASS J03135669+4723282 V* 03 13 56.6944453584 +47 23 28.290651720   20.93 19.16   16.16 ~ 1 0
6 2MASS J03140339+4705144 gD* 03 14 03.3905020104 +47 05 14.467715988   16.39 15.83   15.37 ~ 2 0
7 2MASS J03140379+4703222 V* 03 14 03.7978460088 +47 03 22.259009628   19.06 17.99   16.59 ~ 1 0
8 STEPSS NGC 1245 50701 V* 03 14 04 +47 16.3   21.70 20.22   18.22 ~ 1 0
9 ZTF J031406.65+472203.5 BY* 03 14 06.6635465568 +47 22 03.398389140   19.23 17.72   15.62 ~ 3 0
10 ATO J048.6171+47.1852 EB* 03 14 28.1108884392 +47 11 06.777839292   17.72 17.05   16.31 ~ 8 0
11 STEPSS NGC 1245 50470 V* 03 14 28.1668360128 +47 16 36.331475160   18.72 18.10   17.20 ~ 1 0
12 2MASS J03142872+4710408 V* 03 14 28.7235644952 +47 10 40.885306248   18.00 16.80   15.30 ~ 1 0
13 2MASS J03143504+4709095 EB* 03 14 35.0190623832 +47 09 09.278496396   19.84 18.71   17.7 ~ 2 0
14 Cl* Melotte 20 DH 52 V* 03 14 35.8942608960 +47 19 28.964172684   20.94 19.28   15.88 ~ 5 1
15 NGC 1245 OpC 03 14 44.3 +47 14 06   9.16 8.4     ~ 171 0
16 ZTF J031447.87+470654.5 EB* 03 14 47.8755052920 +47 06 54.502165152   18.48 17.65   16.93 ~ 5 0
17 ZTF J031449.55+471602.9 EB* 03 14 49.5622968624 +47 16 03.013036032   19.71 18.42   16.32 ~ 4 1
18 2MASS J03145015+4715251 V* 03 14 50.1651135192 +47 15 25.178401404   19.90 18.50   16.70 ~ 1 0
19 ZTF J031451.79+471924.6 BY* 03 14 51.7784892936 +47 19 24.723194844   19.09 17.59   15.59 ~ 3 0
20 ZTF J031453.23+471631.5 EB* 03 14 53.2365107472 +47 16 31.509280812   19.34 18.31   17.36 ~ 4 0
21 2MASS J03145353+4712519 V* 03 14 53.5678428456 +47 12 52.034031720   20.28 19.05   17.55 ~ 1 0
22 STEPSS NGC 1245 10462 EB* 03 14 56.3142100324 +47 11 59.210124633   20.3 19.23   18.19 ~ 2 0
23 ZTF J031457.46+471543.0 RS* 03 14 57.4704515904 +47 15 43.002475596   16.88 16.27   15.75 ~ 7 0
24 2MASS J03150277+4718258 gD* 03 15 02.7845451384 +47 18 25.784841816   16.92 16.27   15.69 ~ 2 0
25 STEPSS NGC 1245 20065 V* 03 15 03.8340668928 +47 14 32.905416516   17.27 16.28   14.98 ~ 2 1
26 2MASS J03150464+4715090 V* 03 15 04.6754570064 +47 15 09.276384456   19.74 18.64   17.62 ~ 3 1
27 2MASS J03150636+4717030 V* 03 15 06.1298451617 +47 17 01.972818244   19.47 18.52   17.64 ~ 2 0
28 2MASS J03150798+4709492 EB* 03 15 07.9709417016 +47 09 49.363221996   20.55 19.21   17.41 ~ 2 0
29 ATO J048.7952+47.2506 RS* 03 15 10.8733427232 +47 15 02.464477272   16.70 15.75   14.55 ~ 4 0
30 2MASS J03151250+4711157 V* 03 15 12.5244813048 +47 11 15.879140304   19.46 18.52   17.67 ~ 2 0
31 2MASS J03151453+4715287 V* 03 15 14.5353228432 +47 15 28.728920448   22.13 20.61   17.41 ~ 1 0
32 2MASS J03151490+4714185 gD* 03 15 14.9122102248 +47 14 18.540140352   16.7 16.13   15.61 ~ 5 0
33 ZTF J031519.48+470931.9 EB* 03 15 19.4816104152 +47 09 31.999542084   21.31 19.93   18.03 ~ 4 0
34 2MASS J03152015+4719237 V* 03 15 20.16 +47 19 23.8   17.40 16.91   16.11 ~ 1 0
35 2MASS J03152045+4706012 V* 03 15 20.4601213848 +47 06 01.237678164   17.50 16.59   15.49 ~ 1 0
36 STEPSS NGC 1245 20343 V* 03 15 22.5672368736 +47 18 43.263502308   21.06 19.36   16.26 ~ 1 0
37 2MASS J03152440+4719552 V* 03 15 24.4665394992 +47 19 55.754106816   21.34 19.95   18.15 ~ 1 0
38 STEPSS NGC 1245 20329 V* 03 15 24.4667699664 +47 18 00.667432584   20.48 19.08   16.78 ~ 1 0
39 2MASS J03152825+4704264 V* 03 15 28.2579530424 +47 04 26.552697852   18.57 17.24   15.64 ~ 1 0
40 2MASS J03152956+4714374 EB* 03 15 29.5674932280 +47 14 37.408788960   17.27 16.62   16.01 ~ 2 0
41 STEPSS NGC 1245 30338 V* 03 15 35.5641839510 +47 23 03.968248210   20.11 19.06   18.09 ~ 2 0
42 2MASS J03153626+4717089 V* 03 15 36.2765858352 +47 17 09.001383216   20.80 19.24   17.14 ~ 1 0
43 ZTF J031536.50+470445.5 EB* 03 15 36.5064654840 +47 04 45.465961476   18.93 18.15   17.05 ~ 4 0
44 ZTF J031541.06+472601.1 EB* 03 15 41.0560162224 +47 26 01.035300660   18.99 17.69   16.39 ~ 3 0
45 NGC 2158 OpC 06 07 26.7 +24 05 53           ~ 317 0
46 NGC 2660 OpC 08 42 40.0 -47 11 59   9.05 8.8     ~ 164 0
47 NGC 6208 OpC 16 49 20.5 -53 43 27   8.06 7.2     ~ 94 0
48 NGC 6633 OpC 18 27 30.2 +06 38 21           ~ 423 0
49 NGC 6705 OpC 18 51 03.7 -06 16 18   6.32 5.8     ~ 442 0
50 NGC 6791 OpC 19 20 52.8 +37 46 40   10.52 9.5     ~ 1120 0
51 NGC 6819 OpC 19 41 18.3 +40 11 19   8.21 7.3     ~ 719 0
52 NGC 6940 OpC 20 34 28.4 +28 17 07           ~ 215 0
53 NGC 7789 OpC 23 57 19.4 +56 43 28   7.68 6.7     ~ 575 0

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