2003ApJ...596L.171G

Query : 2003ApJ...596L.171G

2003ApJ...596L.171G - Astrophys. J., 596, L171-L174 (2003/October-3)

Nonnuclear hyper/ultraluminous X-ray sources in the starbursting Cartwheel ring galaxy.

GAO Y., WANG Q.D., APPLETON P.N. and LUCAS R.A.

Abstract (from CDS):

We report the Chandra/ACIS-S detection of more than 20 ultraluminous X-ray sources (ULXs; L0.5–10keV≳3x1039 ergs/s) in the Cartwheel collisional ring galaxy system, of which over a dozen are located in the outer active star-forming ring. A remarkable hyperluminous X-ray source (HLX; L0.5–10keV≳1041 ergs/s assuming isotropic radiation), which dominates the X-ray emission from the Cartwheel ring, is located in the same segment of the ring as most ULXs. These powerful H/ULXs appear to be coincident with giant H II region complexes, young star clusters, and radio and mid-infrared hot spots: all strong indicators of recent massive star formation. The X-ray spectra show that H/ULXs have similar properties as those of the most luminous ULXs found in the nearest starbursts and galaxy mergers such as the Antennae galaxies and M82. The close association between the X-ray sources and the starbursting ring strongly suggests that the H/ULXs are intimately associated with the production and rapid evolution of short-lived massive stars. The observations represent the most extreme X-ray luminosities discovered to date associated with star-forming regions–rivaling the X-ray luminosities usually associated with active galactic nuclei.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Active - Galaxies: Individual: Name: Cartwheel - Galaxies: Individual: Alphanumeric: VV 784 - Galaxies: Interactions - Galaxies: Starburst - X-Rays: Galaxies

Nomenclature: Table 1: [GWA2003] NN (Nos 1-31).

Simbad objects: 45

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Number of rows : 45
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 CXOU J003737.5-334256 HII 00 37 37.5 -33 42 59           ~ 9 0
2 CXOU J003737.6-334254 HII 00 37 37.5 -33 42 53           ~ 8 0
3 CXOU J003737.5-334342 X 00 37 37.56 -33 43 42.7           ~ 2 0
4 CXOU J003737.8-334253 X 00 37 37.87 -33 42 53.6           ~ 3 0
5 CXOU J003738.3-334308 HII 00 37 38.4 -33 43 12           ~ 6 0
6 CXOU J003738.7-334316 HII 00 37 38.6 -33 43 17           ~ 8 0
7 CXOU J003738.7-334318 HII 00 37 38.8 -33 43 18           ~ 9 0
8 CXOU J003738.9-334317 X 00 37 38.97 -33 43 17.5           ~ 2 0
9 CXOU J003739.1-334230 HII 00 37 39.0 -33 42 30           ~ 7 0
10 [GWA2003] 10 HXB 00 37 39.22 -33 42 50.6           ~ 7 0
11 CXO J003739.3-334323 HXB 00 37 39.39 -33 43 23.3           ~ 16 0
12 CXOU J003740.2-334327 HII 00 37 40.154 -33 43 26.00           ~ 11 0
13 CXOU J003740.4-334325 X 00 37 40.46 -33 43 25.4           ~ 5 0
14 CXOU J003740.7-334330 HII 00 37 40.7 -33 43 30           ~ 5 0
15 CXOU J003740.8-334330 HII 00 37 41.0 -33 43 32           ~ 8 0
16 CXOU J003741.0-334221 X 00 37 41.06 -33 42 21.9           ~ 3 0
17 MCG-06-02-022a EmG 00 37 41.1133192392 -33 42 58.515101748   19.26   18.52   ~ 314 1
18 CXOU J003741.1-334332 HII 00 37 41.2 -33 43 31           ~ 10 0
19 [H95] 3 HII 00 37 41.6 -33 42 36           ~ 4 0
20 CXOU J003741.7-334235 X 00 37 41.73 -33 42 35.7           ~ 4 0
21 [H95] 4 HII 00 37 41.8 -33 42 38           ~ 2 0
22 [H95] 10 HII 00 37 41.9 -33 43 26           ~ 4 0
23 CXOU J003741.9-334326 X 00 37 42.01 -33 43 26.8           ~ 6 0
24 [H95] 9 HII 00 37 42.1 -33 43 27           ~ 2 0
25 CXOU J003742.1-334314 X 00 37 42.15 -33 43 14.2           ~ 5 0
26 [GWA2003] 21 HXB 00 37 42.50 -33 43 04.5           ~ 6 0
27 CXOU J003742.7-334212 X 00 37 42.80 -33 42 12.8           ~ 3 0
28 CXOU J003742.8-334209 X 00 37 42.87 -33 42 10.2           ~ 3 0
29 CXOU J003742.9-334204 X 00 37 42.96 -33 42 04.6           ~ 3 0
30 CXOU J003743.0-334206 X 00 37 43.02 -33 42 06.3           ~ 3 0
31 CXOU J003743.1-334143 X 00 37 43.13 -33 41 43.3           ~ 1 0
32 CXOU J003743.1-334204 X 00 37 43.14 -33 42 04.4           ~ 2 0
33 LEDA 2249 G 00 37 43.550 -33 42 06.51   16.66   15.94   ~ 20 0
34 CXOU J003743.7-334147 X 00 37 43.70 -33 41 47.6           ~ 1 0
35 CXOU J003743.8-334209 X 00 37 43.87 -33 42 10.2           ~ 4 0
36 LEDA 2252 G 00 37 44.9633851992 -33 42 20.452830948   15.26   14.54   ~ 18 0
37 CXOU J003745.3-334229 X 00 37 45.32 -33 42 29.0           ~ 3 0
38 2XMM J003745.5-334151 AG? 00 37 45.61 -33 41 51.8           ~ 4 0
39 6dFGS gJ003746.3-333952 G 00 37 46.2972257376 -33 39 52.114306752   16.202   15.185   ~ 21 0
40 NAME 30 Dor Nebula SFR 05 38 36.0 -69 05 11           ~ 1276 2
41 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 6156 6
42 NGC 3256 Sy2 10 27 51.284 -43 54 13.55   11.83 11.33 10.62 11.9 ~ 920 2
43 NGC 4038 EmG 12 01 53.002 -18 52 03.32   10.91   9.74 11.0 ~ 1364 1
44 NAME Antennae IG 12 01 53.170 -18 52 37.92           ~ 1749 0
45 NGC 4039 GiP 12 01 53.51 -18 53 10.3   11.08   9.77   ~ 1173 1

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