1994A&A...288..466H


Query : 1994A&A...288..466H

1994A&A...288..466H - Astronomy and Astrophysics, volume 288466-471 (1994/8-2)

Discovery of multiple X-ray sources in 47 Tucanae.

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

Abstract (from CDS):

Two Rosat HRI observations of 47 Tuc were obtained with a one year interval. Four X-ray sources are detected within the core of 47 Tuc in the first observation. Two of these, and one new source are detected in the core a year later. The positions of two sources are compatible with the position of the X-ray source detected with the Einstein satellite. Four additional sources are detected outside the core, but within 4 core radii; several of these are expected to be cluster members as well. The luminosities of the core sources (Lx≃1033erg/s) are higher than those observed with Rosat of cataclysmic variables, but are in the range observed for soft X-ray transients in quiescence. In addition to the point sources, extended emission is detected out to several core radii; this may be the conglomerate emission of a number of low-luminosity sources.

Abstract Copyright: ∼

Journal keyword(s): globular clusters: general, 47 Tuc - X-rays: stars

Nomenclature: Table 1: [HJV94] NN (Nos 1-15)

Simbad objects: 25

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Number of rows : 25
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 2MASS J00224594-7159049 * 00 22 45.9752376864 -71 59 04.906852944           ~ 2 0
2 [HJV94] 2 X 00 22 46.9 -72 01 16           ~ 2 0
3 2MASS J00233071-7220436 AGN 00 23 30.7310522112 -72 20 43.666192608           ~ 7 0
4 CXOGlb J002353.9-720350 X 00 23 53.982 -72 03 50.07   14.28 13.07     ~ 18 0
5 CXOGlb J002400.9-720453 LXB 00 24 00.968 -72 04 53.18     21.7     ~ 59 0
6 CXOGlb J002402.1-720542 CV* 00 24 02.141 -72 05 41.94           ~ 15 0
7 CXOGlb J002403.4-720451 LXB 00 24 03.494 -72 04 51.94           ~ 62 1
8 RX J0021.8-7221 LXB 00 24 04.263 -72 04 57.97 18.868   19.772   19.316 ~ 78 0
9 Cl* NGC 104 AKO 7 * 00 24 04.6 -72 04 57   15.05 14.08     ~ 2 0
10 [HJV94] 8 X 00 24 04.7 -72 05 04           ~ 5 0
11 Cl* NGC 104 AKO 6 * 00 24 04.8 -72 04 54   16.83 16.01     ~ 6 0
12 Cl* NGC 104 AKO 8 * 00 24 04.9 -72 04 57   15.62 14.48     ~ 2 0
13 Cl* NGC 104 SAW V39 * 00 24 04.913 -72 04 55.36 17.678   17.391   16.45 ~ 39 0
14 NGC 104 GlC 00 24 05.359 -72 04 53.20     4.09     ~ 4158 0
15 Cl* NGC 104 SBG V3 CV* 00 24 06.2943986812 -72 04 45.361338815   13.429 10.622   9.316 ~ 34 0
16 CXOGlb J002407.1-720545 CV* 00 24 07.141 -72 05 45.67           ~ 16 0
17 HD 2072 * 00 24 14.4577194336 -71 58 49.256355936   9.85 9.09     G5 11 0
18 [HJV94] 12 X 00 24 15.3 -71 58 48           ~ 4 0
19 Cl* NGC 104 AGBWF 2-48 CV* 00 24 15.880 -72 04 36.38 21.243       19.02 Me 20 0
20 [HJV94] 14 X 00 24 46.9 -72 12 39           ~ 2 0
21 SRGE J002456.9-720651 XB* 00 24 56.97 -72 06 51.8           ~ 3 0
22 NGC 2682 OpC 08 51 23.5 +11 48 54           ~ 2528 0
23 NGC 5139 GlC 13 26 47.28 -47 28 46.1           ~ 3677 0
24 NGC 6397 GlC 17 40 42.09 -53 40 27.6     5.17     ~ 2103 0
25 NGC 6752 GlC 19 10 52.11 -59 59 04.4           ~ 2121 0

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