1994A&A...289..763J

Query : 1994A&A...289..763J

1994A&A...289..763J - Astronomy and Astrophysics, volume 289763-774 (1994/9-3)

ROSAT PSPC observations of globular clusters.

JOHNSTON H.M., VERBUNT F. and HASINGER G.

Abstract (from CDS):

We present deep pointed observations of nine globular clusters obtained with the Rosat PSPC. The clusters observed were selected to be nearby, have low interstellar absorption towards them, and to have high collision number. X-ray sources are detected in the cores of seven of them, at luminosities of ∼1-6x1032erg/s. At least two of these are multiple. The sources are too dim to obtain spectra of them, but analysis of the X-ray colours indicates that their spectra are not all identical. Four of the seven have colours indicating soft spectra, with blackbody temperatures kT ≲0.3keV. Soft spectra can be excluded for the other three sources.

Abstract Copyright: ∼

Journal keyword(s): globular clusters: general - X-rays: general

Nomenclature: Tables 2-9: [JVH94] NGC 5139 NN (Nos 1-17), [JVH94] NGC 6341 NN (Nos 1-13), [JVH94] NGC 6397 NN (Nos 1-10), [JVH94] NGC NGC 6544 N (Nos 1-2), [JVH94] NGC 6626 N (Nos 1-4), [JVH94] NGC 6656 N (Nos 1-8), [JVH94] NGC 6752 NN (Nos 1-12), [JVH94] NGC 7099 NN (Nos 1-12).

Simbad objects: 98

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Number of rows : 98
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 104 GlC 00 24 05.359 -72 04 53.20     4.09     ~ 4158 0
2 PSR J0437-47 Psr 04 37 15.7994581776 -47 15 08.544351636           DC 1032 0
3 V* YZ Cnc CV* 08 10 56.6511822192 +28 08 33.260657100     15.24     ~ 256 0
4 V* SU UMa CV* 08 12 28.2695986944 +62 36 22.427676396           B2 516 0
5 NGC 2682 OpC 08 51 23.5 +11 48 54           ~ 2528 0
6 RX J1323.6-4718 Or* 13 23 35.8785763368 -47 18 46.627462764   12.292 11.236 10.820 9.830 K3Ve 19 0
7 [JVH94] NGC 5139 1 X 13 25 37.4 -47 17 52           ~ 1 0
8 HD 116649 * 13 25 44.6761898208 -47 49 08.512338216   7.69 7.58     A0V 30 0
9 V* V966 Cen Or* 13 25 47.8321566936 -48 14 57.846569964   10.37 9.77     G2V 48 0
10 2MASS J13255214-4719085 Y*? 13 25 52.1440450344 -47 19 08.487218676 16.877 16.295 14.764   12.296 ~ 12 0
11 [GBW2003] 33 V* 13 25 52.7 -47 28 55           ~ 3 0
12 SOPS IV e-94 C* 13 26 01.5892714032 -47 33 05.967491724   13.184 11.444 11.072 9.966 C1,3p 58 0
13 [GBW2003] 10 X 13 26 11.4 -47 37 11           ~ 3 0
14 2E 3049 X 13 26 19.796 -47 29 10.51   26.8   25.3   ~ 22 0
15 2XMM J132625.1-473227 AG? 13 26 25.14 -47 32 27.4           ~ 7 0
16 NGC 5139 GlC 13 26 47.28 -47 28 46.1           ~ 3677 0
17 [JVH94] NGC 5139 9 X 13 26 52.8 -47 29 10           ~ 4 0
18 NGC 5139 6221 Y*? 13 27 27.6571684512 -47 19 07.636014300 17.018 16.220 14.654 14.46 11.968 ~ 13 0
19 2XMM J132729.2-472554 AG? 13 27 29.30 -47 25 54.1           ~ 6 0
20 HD 116993 * 13 28 09.0491488296 -47 33 27.020342268   10.59 9.51     K1(III) 11 0
21 1RXS J132909.6-475544 X 13 29 09.6 -47 55 44           ~ 1 0
22 1RXS J132917.6-472316 Ro* 13 29 18.5921032728 -47 22 50.488736340   13.523 12.468 11.925 10.840 ~ 10 0
23 HD 117193 * 13 29 36.1669015680 -47 52 32.928999312   7.01 6.93     A1V 29 0
24 [JVH94] NGC 6341 3 X 17 16 09.7 +43 16 10           ~ 2 0
25 USNO-A2.0 1275-09269453 G 17 16 31.4073016272 +43 02 21.868859436   18.0   18.0   ~ 7 0
26 TYC 3081-510-1 Em* 17 16 32.7022900032 +43 02 28.824860580   11.65 10.88     G8 12 0
27 [JVH94] NGC 6341 9 X 17 16 44.1 +43 04 58           ~ 2 0
28 [FLM96] M 92 G X 17 16 47.9 +42 55 06           ~ 4 0
29 QSO B1715+4316 QSO 17 17 00.6061076112 +43 13 30.254516256   21.00 20.0     ~ 8 0
30 [FLM96] M 92 B X 17 17 01.26 +43 10 43.6           ~ 5 0
31 [FLM96] M 92 C X 17 17 06.8 +43 08 24           ~ 7 0
32 M 92 GlC 17 17 07.39 +43 08 09.4     6.52     ~ 2240 0
33 [JVH94] NGC 6341 5 X 17 17 12.9 +43 13 14           ~ 2 0
34 TYC 3085-1254-1 * 17 17 15.3974016912 +43 24 46.022163264   11.29 10.60     ~ 2 0
35 [JVH94] NGC 6341 13 X 17 17 28.1 +42 55 00           ~ 2 0
36 [FLM96] M 92 F X 17 17 29.3 +43 19 42           ~ 4 0
37 [JVH94] NGC 6341 11 X 17 18 01.7 +42 56 36           ~ 2 0
38 [FLM96] M 92 D X 17 18 09.6 +43 09 02           ~ 4 0
39 FIRST J171821.4+431523 X 17 18 20.7 +43 15 23           ~ 2 0
40 [JVH94] NGC 6397 3 X 17 38 38.0 -53 33 54           ~ 1 0
41 [JVH94] NGC 6397 7 X 17 39 05.1 -53 50 10           ~ 1 0
42 [JVH94] NGC 6397 8 X 17 40 10.9 -53 50 34           ~ 2 0
43 CGKB D QSO 17 40 32.9 -53 43 30           ~ 4 0
44 CGKB C X 17 40 41.5 -53 40 07           ~ 4 0
45 NGC 6397 GlC 17 40 42.09 -53 40 27.6     5.17     ~ 2103 0
46 [III2004] NGC 6397 3 X 17 40 59.3 -53 57 59           ~ 2 0
47 HD 160177 ** 17 41 27.6346045560 -53 48 10.771523892   10.29 9.40 9.665   K1IV/V 34 0
48 CGKB G G 17 41 34.3 -53 31 54           ~ 4 0
49 1RXS J174243.4-540905 X 17 42 43.4 -54 09 05           ~ 1 0
50 1RXS J174441.6-531551 X 17 44 41.6 -53 15 51           ~ 3 0
51 NGC 6544 GlC 18 07 20.58 -24 59 50.4   11.36 9.90     ~ 332 0
52 HD 165517 Be* 18 07 27.2509608168 -25 06 16.492632048 8.42 9.30 9.10 9.16   B0Ia(n) 41 0
53 [JVH94] NGC 6544 1 * 18 09 36.4221011136 -24 44 07.035861264           ~ 1 0
54 M 28 GlC 18 24 32.89 -24 52 11.4           ~ 821 0
55 RX J1824.5-2452 X 18 24 32.9 -24 51 58           ~ 3 0
56 [JVH94] NGC 6626 1 X 18 24 38.3 -24 50 26           ~ 1 0
57 [JVH94] NGC 6626 3 X 18 24 41.7 -24 52 54           ~ 1 0
58 1RXS J182700.1-252112 X 18 27 00.1 -25 21 12           ~ 1 0
59 V* V4634 Sgr LXB 18 29 28.8 -23 47 48 18.90 19.40 19     ~ 399 0
60 NGC 6642 GlC 18 31 54.23 -23 28 34.1   11.30 10.24     ~ 240 0
61 [JVH94] NGC 6656 5 X 18 35 24.2 -23 55 40           ~ 2 0
62 2E 1832.8-2349 X 18 35 51.2 -23 46 44           ~ 6 1
63 [JVH94] NGC 6656 2 X 18 35 58.7 -23 46 31           ~ 1 0
64 [JVH94] NGC 6656 7 X 18 36 00.9 -24 04 14           ~ 3 0
65 HD 171495 * 18 36 10.4758045378 -23 46 27.457447555   11.02 10.63     A 10 0
66 [JVH94] NGC 6656 6 X 18 36 18.1 -24 03 55           ~ 1 0
67 M 22 GlC 18 36 23.94 -23 54 17.1           ~ 1459 0
68 OGLE BLG-DN-1057 CV* 18 36 24.696 -23 54 35.60     18.77   16.224 ~ 26 0
69 2MASS J18362712-2406189 X 18 36 27.12 -24 06 19.0           ~ 3 0
70 [JVH94] NGC 6752 8 X 19 09 43.9 -60 01 59           ~ 1 0
71 [JVH94] NGC 6752 4 X 19 10 04.0 -59 55 28           ~ 3 0
72 [G93] NGC 6752 A AGN 19 10 40.375 -59 58 41.47   21.76   20.97   ~ 11 0
73 [JVH94] NGC 6752 7 X 19 10 51.1 -59 58 51           ~ 2 1
74 NGC 6752 GlC 19 10 52.11 -59 59 04.4           ~ 2121 0
75 HD 178085 ** 19 10 57.8503449960 -60 16 19.925911668         7.660 G1V 79 0
76 [JVH94] NGC 6752 5 X 19 11 02.7 -59 55 53           ~ 1 0
77 X Aql X-1 LXB 19 11 16.0571313336 +00 35 05.868232692           ~ 1186 1
78 [JVH94] NGC 6752 12 X 19 11 53.7 -60 18 24           ~ 1 0
79 [JVH94] NGC 6752 3 X 19 13 27.1 -59 48 05           ~ 2 0
80 1RXS J191345.7-593359 X 19 13 45.7 -59 33 59           ~ 1 0
81 [JVH94] NGC 6752 9 X 19 14 12.6 -60 06 34           ~ 1 0
82 1RXS J191439.9-592802 X 19 14 39.9 -59 28 02           ~ 2 0
83 [JVH94] NGC 6752 10 X 19 14 54.8 -60 08 25           ~ 1 0
84 PSR J1959+2048 Psr 19 59 36.7643141520 +20 48 14.896407996   21.08 20.16 19.53 18.79 G: 854 3
85 HD 205738 PM* 21 37 57.5435164872 -23 04 06.011346180   9.03 8.62     F5V 16 0
86 [JVH94] NGC 7099 10 X 21 38 43.9 -23 23 51           ~ 1 0
87 QSO B2136-2307 QSO 21 38 50.5964179416 -22 53 23.517468492   17.5 17.0     ~ 9 0
88 ACT-CL J2139.0-2333 ClG 21 39 04.8 -23 33 08           ~ 10 0
89 [JVH94] NGC 7099 7 X 21 39 11.2 -23 09 11           ~ 1 0
90 [JVH94] NGC 7099 3 X 21 39 23.1 -22 55 49           ~ 2 0
91 [JVH94] NGC 7099 4 X 21 39 27.0 -22 59 32           ~ 1 0
92 HD 206035 EB* 21 39 58.2595990104 -23 21 11.086132248   10.89 10.64     A2 8 0
93 [JVH94] NGC 7099 9 X 21 40 08.0 -23 23 38           ~ 2 0
94 ClG 2137-2353 ClG 21 40 12.8 -23 39 27     18.5     ~ 390 0
95 M 30 GlC 21 40 22.12 -23 10 47.5     7.10     ~ 1121 0
96 [JVH94] NGC 7099 8 X 21 40 22.5 -23 10 49           ~ 2 0
97 6dFGS gJ214104.8-225033 Sy1 21 41 04.7796649848 -22 50 32.427801492   18.16   16.86   ~ 6 0
98 [JVH94] NGC 7099 5 X 21 41 32.3 -23 02 26           ~ 1 0

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