1998A&A...339..431B

Query : 1998A&A...339..431B

1998A&A...339..431B - Astronomy and Astrophysics, volume 339431-439 (1998/11-2)

X-rays from old open clusters: M 67 and NGC 188.

BELLONI T., VERBUNT F. and MATHIEU R.D.

Abstract (from CDS):

We have observed the old open clusters M67 and NGC188 with the ROSAT PSPC. In M67 we detect a variety of X-ray sources. The X-ray emission by a cataclysmic variable, a single hot white dwarf, two contact binaries, and some RS CVn systems is as expected. The X-ray emission by two binaries located below the subgiant branch in the Hertzsprung Russell diagram of the cluster, by a circular binary with a cool white dwarf, and by two eccentric binaries with Pb>700d is puzzling. Two members of NGC188 are detected, including the FKCom type star D719. Another possible FKCom type star, probably not a member of NGC188, is also detected.

Abstract Copyright: ∼

Journal keyword(s): stars: abundances - open clusters: individual: M 67, NGC 188 - X-rays: stars

Nomenclature: Table 1: [BVM98] M 67 NN N=59, (Nos 1-4, 6-19, 21-61). Table 2: <%M [BVM98] NGC 188 NN (Nos 1-34).

Errata: Erratum vol. 351, p. 398 (1999)

Simbad objects: 107

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Number of rows : 107
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 [BVM98] NGC 188 24 X 00 32 29.4 +85 18 42           ~ 1 0
2 [BVM98] NGC 188 15 X 00 33 01.0 +85 24 52           ~ 1 0
3 1RXS J003241.9+851616 AG? 00 33 01.0503645096 +85 16 18.849546696   19.585 19.025     ~ 7 1
4 [BVM98] NGC 188 23 X 00 34 18.3 +85 19 20           ~ 1 0
5 Cl* NGC 188 DGV 1855 * 00 36 34.1168828184 +85 29 04.599157596   13.309 12.651     ~ 11 0
6 [BVM98] NGC 188 4 X 00 36 46.4 +85 32 23           ~ 1 0
7 [BVM98] NGC 188 2 X 00 36 48.1 +85 35 09           ~ 1 0
8 [BVM98] NGC 188 34 X 00 37 30.3 +85 05 34           ~ 1 0
9 [BVM98] NGC 188 9 X 00 37 32.6 +85 30 14           ~ 1 0
10 [BVM98] NGC 188 18 X 00 37 54.6 +85 22 54           ~ 1 0
11 [BVM98] NGC 188 12 X 00 37 55.9 +85 28 46           ~ 1 0
12 [BVM98] NGC 188 3 X 00 38 20.1 +85 34 27           ~ 1 0
13 Cl* NGC 188 DGV 1861 PM* 00 39 10.9341338040 +85 31 28.472556936   16.477 14.903     ~ 5 0
14 [BVM98] NGC 188 14 X 00 39 43.5 +85 26 38           ~ 1 0
15 NGC 188 3001 SB* 00 41 15.8284598496 +85 12 32.326525872 16.384 16.21 15.52 15.109 14.731 ~ 17 0
16 [BVM98] NGC 188 32 X 00 41 27.1 +85 12 30           ~ 1 0
17 [BVM98] NGC 188 7 X 00 42 34.5 +85 31 21           ~ 1 0
18 BD+84 12 * 00 42 43.4115091200 +85 14 14.133990876 10.061 10.05 9.55     F5 30 0
19 [BVM98] NGC 188 10 X 00 42 43.5 +85 29 07           ~ 1 0
20 XMMU J004257.3+851823 X 00 42 57.3 +85 18 23           ~ 2 0
21 [BVM98] NGC 188 33 X 00 43 53.8 +85 06 25           ~ 1 0
22 2XMM J004437.7+852711 AG? 00 44 37.36 +85 27 11.5   19.62 19.18     ~ 3 0
23 2MASS J00444460+8532163 RG* 00 44 44.5811194032 +85 32 16.533971196   15.277 14.108     ~ 32 0
24 [BVM98] NGC 188 17 X 00 45 22.0 +85 23 40           ~ 1 0
25 [BVM98] NGC 188 27 X 00 45 27.7 +85 16 36           ~ 1 0
26 [BVM98] NGC 188 8 X 00 46 21.9 +85 30 53           ~ 1 0
27 NGC 188 OpC 00 47 14.8 +85 14 42           ~ 990 0
28 XMMU J004744.9+852211 X 00 47 44.9 +85 22 11           ~ 2 0
29 Cl* NGC 188 DGV 1824 * 00 47 49.8677200320 +85 35 21.421095900   15.502 14.468     ~ 7 0
30 NGC 188 1001 * 00 47 57.0854501904 +85 14 56.024551968 13.913 13.07 11.93 11.307 10.765 G8IIIb 34 0
31 V* V780 Cep SB* 00 50 02.8090779168 +85 21 22.976588376 16.485 16.24 15.51 15.143 14.707 ~ 20 0
32 2XMM J005027.0+852212 AG? 00 50 26.93 +85 22 12.1   18.19 17.84     ~ 3 0
33 V* V372 Cep SB* 00 51 24.2581313904 +85 18 03.361652748 14.223 14.029 13.246 12.681 12.154 ~ 20 0
34 [BVM98] NGC 188 16 X 00 51 30.7 +85 24 46           ~ 1 0
35 2XMM J005417.7+852036 AG? 00 54 17.62 +85 20 36.4   21.42 20.92     ~ 3 0
36 NGC 752 OpC 01 56 53.7 +37 45 06           ~ 712 0
37 Cl* NGC 2682 SAND 262 * 08 49 23.7988105512 +11 54 36.824629968   16.48 15.640     ~ 20 0
38 [VV2006] J084935.4+115027 QSO 08 49 36.6104766288 +11 50 56.281777080           ~ 8 1
39 RX J084942+11418 X 08 49 42.4 +11 41 53           ~ 3 0
40 RX J084954+12015 X 08 49 54.1 +12 01 31           ~ 3 0
41 [VV2006] J084954.1+115317 QSO 08 49 54.1531921368 +11 53 17.248699968   19.23 18.74     ~ 11 0
42 BD+12 1917 V* 08 49 56.8183190424 +11 41 32.987890788   11.2 9.782   8.540 K3III 78 1
43 RX J084957+11349 X 08 49 57.2 +11 34 54           ~ 3 0
44 RX J085011+11355 X 08 50 11.1 +11 35 35           ~ 4 0
45 RX J085014+12010 X 08 50 14.3 +12 01 03           ~ 3 0
46 Cl* NGC 2682 SAND 628 CV* 08 50 36.9972256176 +11 54 04.678000848 15.522 15.23 14.522     F9 34 0
47 RX J085038+11472 AGN 08 50 37.97 +11 47 09.3   24.95 22.94     ~ 4 0
48 NGC 2682 10 * 08 50 44.9881507032 +11 37 30.315188100 13.179 12.63 12.045   11.204 ~ 14 0
49 SDSS J085052.71+114742.8 AGN 08 50 52.71794 +11 47 42.8980   22.13 21.86     ~ 5 0
50 NGC 2682 24 SB* 08 50 53.1648732419 +11 47 34.206354717 13.922 13.91 13.307 13.199 12.593 ~ 35 0
51 Cl* NGC 2682 ES I-43 * 08 50 56.2236755280 +11 45 15.833228400 18.497 17.41 16.280   14.967 ~ 16 0
52 [BVM98] M 67 15 AGN 08 50 57.104 +11 46 07.57   24.63 23.27     ~ 3 0
53 [BVM98] M 67 36 X 08 50 57.55 +11 52 55.2           ~ 3 0
54 LB 3597 QSO 08 50 58.8449408328 +11 51 38.476080612 20.567 20.54 20.301     ~ 23 0
55 NGC 2682 51 SB* 08 51 01.5495469560 +11 49 34.326309756 13.485 13.22 12.57 12.54 11.976 G0IV 33 0
56 Cl* NGC 2682 ES I-23 * 08 51 03.6146369568 +11 46 17.287883832 17.193 16.92 16.169   15.341 ~ 11 0
57 RX J085104+11462 X 08 51 03.818 +11 46 30.15   21.57 21.21     ~ 6 0
58 [BVM98] M 67 54 * 08 51 04.43 +11 41 51.6   21.02 19.36     ~ 2 0
59 [BVM98] M 67 34 G 08 51 04.69 +11 55 29.7   22.80 21.99     ~ 3 0
60 Cl* NGC 2682 FBC 2984 * 08 51 05.1947750400 +11 55 18.448051332   21.615 20.184   18.621 ~ 4 0
61 Cl* NGC 2682 SAND 1077 SB* 08 51 07.2254409816 +11 53 01.951858464 13.382 13.24 12.595   11.752 F4 53 0
62 Cl* NGC 2682 ES IV-33 SB* 08 51 08.0039594736 +11 49 55.884208980 17.117 16.67 15.793 15.244 14.692 ~ 25 0
63 Cl* NGC 2682 SAND 1063 RS* 08 51 13.3549065744 +11 51 40.172654052 15.557 14.84 13.573   12.591 G8IV 62 0
64 1RXS J085118.1+113207 X 08 51 17.4 +11 31 54           ~ 1 0
65 Cl* NGC 2682 ES I-50 SB* 08 51 17.7224075472 +11 44 29.561572500 16.629 16.26 15.347   14.281 ~ 31 0
66 Cl* NGC 2682 ES IV-15 SB* 08 51 18.2619418512 +11 50 19.702239432 15.050 14.94 14.292 13.914 13.547 F9V 47 0
67 Cl* NGC 2682 SAND 999 RS* 08 51 18.6870620808 +11 47 02.715891216 13.632 13.38 12.569 12.143 11.69 ~ 97 0
68 NGC 2682 119 RS* 08 51 19.0167198768 +11 50 05.755781940 13.197 13.13 12.547 12.177 11.837 F9IV 88 0
69 Cl* NGC 2682 SAND 1070 RS* 08 51 19.6901093120 +11 52 10.753229665 14.643 14.52 13.939   13.156 G1V 47 0
70 [BVM98] M 67 23 X 08 51 20.6 +11 48 43           ~ 2 0
71 NGC 2682 131 SB* 08 51 20.794032 +11 53 26.13120   11.647 11.248 11.042 10.722 F5IV 128 0
72 NGC 2682 136 SB* 08 51 21.7535381400 +11 52 37.872333372   11.92 11.235   10.595 F8V 84 0
73 Cl* NGC 2682 SAND 1019 SB* 08 51 23.2771502112 +11 48 26.560354284 15.407 15.15 14.440 13.842 13.338 G0V 34 0
74 NGC 2682 OpC 08 51 23.5 +11 48 54           ~ 2528 0
75 NGC 2682 143 SB* 08 51 23.7746734704 +11 49 49.338989364   12.39 11.420   10.61 G4III 105 0
76 Cl* NGC 2682 SAND 1112 RS* 08 51 24.1103539344 +12 01 30.643631940   15.76 15.043     G6V 19 0
77 NGC 2682 147 RS* 08 51 24.9497688840 +11 49 00.800179176 13.897 13.84 13.282 12.906 12.545 G0V 31 0
78 Cl* NGC 2682 SAND 1113 RS* 08 51 25.3043953560 +12 02 56.494997844 15.299 14.78 13.736     ~ 71 0
79 V* ET Cnc EB* 08 51 26.7153102238 +11 56 12.173349613 17.711 16.98 15.850     ~ 38 0
80 [BVM98] M 67 32 AGN 08 51 27.129 +11 55 24.97   25.82 23.46     ~ 3 0
81 V* EU Cnc CV* 08 51 27.1835851536 +11 46 56.996141700   21.93 21.75     ~ 46 0
82 HD 75638 ** 08 51 27.314904 +12 07 40.51704           F0 31 0
83 NGC 2682 159 * 08 51 27.8885213448 +11 55 40.949794380 14.598 13.94 13.320   12.625 G1IV 64 0
84 Cl* NGC 2682 SAND 1036 EB* 08 51 28.1469477144 +11 49 27.495860592 13.262 13.27 12.809   12.184 F3 84 0
85 NGC 2682 176 SB* 08 51 31.2372498181 +11 45 50.657346109 13.242 13.22 12.624 12.312 11.950 F8 53 0
86 Cl* NGC 2682 EIS 2593 * 08 51 33.02 +11 34 11.9   21.59 21.03     ~ 2 0
87 [BVM98] M 67 48 G 08 51 35.70 +11 48 00.9   22.72 22.38     ~ 3 0
88 NGC 2682 195 SB* 08 51 36.0102891818 +11 46 33.602537041 13.539 13.4 12.682 12.328 11.915 G0 64 0
89 NGC 2682 200 * 08 51 37.1607693888 +11 59 02.503934952   11.95 10.915   10.248 G8 23 0
90 Cl* NGC 2682 SAND 1282 SB* 08 51 37.8473566296 +11 50 57.092451072 13.964 13.89 13.333   12.634 F7V 181 0
91 [BVM98] M 67 27 X 08 51 43.1 +12 02 32           ~ 1 0
92 NGC 2682 241 * 08 51 49.1427101712 +11 49 43.607392284 13.385 13.31 12.759   12.025 F8IV 37 0
93 LB 6378 QSO 08 51 49.9413614904 +11 49 52.279783788   20.77 20.64     ~ 14 0
94 NGC 2682 244 RG* 08 51 50.2026472872 +11 46 06.919342284   11.72 10.700   9.820 G8III 104 0
95 2XMM J085151.3+113549 QSO 08 51 51.4015997424 +11 35 48.872465484   21.65 20.99     ~ 3 0
96 Cl* NGC 2682 FBC 4542 * 08 51 57.46 +11 59 25.4   20.076 18.841   17.752 ~ 3 0
97 Cl* NGC 2682 SAND 1414 * 08 52 06.3658987440 +11 37 31.149933636 15.539 15.453 14.717   13.881 ~ 14 0
98 Cl* NGC 2682 EIS 2018 QSO 08 52 07.47 +11 41 14.5   21.67 21.52     ~ 4 0
99 Cl* NGC 2682 FBC 4858 * 08 52 10.0481008656 +11 55 28.994377188 19.830 18.983 17.358     ~ 6 0
100 [BVM98] M 67 51 X 08 52 13.52 +11 46 21.1   22.45 21.95     ~ 2 0
101 Cl* NGC 2682 FBC 4960 * 08 52 14.4091238640 +11 46 33.022657236 17.263 16.78 15.807   14.688 ~ 20 0
102 Cl* NGC 2682 SAND 1601 EB* 08 52 16.8391686288 +11 48 31.249877400   15.45 14.651   13.33 ~ 23 0
103 Cl* NGC 2682 FBC 5023 Ro* 08 52 17.0383800336 +11 41 09.065716296 19.661 18.595 16.919   14.255 ~ 12 0
104 [BVM98] M 67 29 X 08 52 22.3 +11 59 58           ~ 2 0
105 V* AK Her SB* 17 13 57.8236051704 +16 21 00.618202044   9.04 8.51   7.874 F4V 271 0
106 V* V389 Oph Mi* 17 56 52.9913072688 +05 52 12.300731076       15.42   ~ 14 1
107 NGC 6940 OpC 20 34 28.4 +28 17 07           ~ 215 0

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