2004ApJ...611..208H

Query : 2004ApJ...611..208H

2004ApJ...611..208H - Astrophys. J., 611, 208-219 (2004/August-2)

Chandra observations of ultraluminous infrared galaxies: extended hot gaseous halos in merging galaxies.

HUO Z.Y., XIA X.Y., XUE S.J., MAO S. and DENG Z.G.

Abstract (from CDS):

We study the properties of hot gaseous halos in 10 nearby ultraluminous IRAS galaxies observed with the ACIS instrument on board Chandra. For all sample galaxies, diffuse soft X-ray emissions are found within ∼10 kpc of the central region; their spectra are well fitted by a MEKAL model plus emission lines from α-elements and other ions. The temperature of the hot gas is about 0.7 keV and metallicity is about 1 Z☉. Outside the central region, extended hot gaseous halos are found for 9 out of the 10 ultraluminous infrared galaxies (ULIRGs). Most spectra of these extended halos can be fitted with a MEKAL model with a temperature of about 0.6 keV and a low metallicity (Z∼0.1 Z☉). We discuss the implications of our results on the origin of X-ray halos in elliptical galaxies and the feedback processes associated with starbursts.

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Journal keyword(s): Galaxies: Elliptical and Lenticular, cD - Galaxies: Evolution - Galaxies: Interactions - Galaxies: ISM - Galaxies: Starburst

Simbad objects: 19

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Number of rows : 19
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 55 rG 00 14 53.602 -39 11 47.86 8.54 8.58 7.87 7.84   ~ 828 2
2 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 3588 2
3 IRAS 05189-2524 Sy2 05 21 01.3994605776 -25 21 45.321827832   15.47 14.75     ~ 545 0
4 Z 289-11 Sy2 09 35 51.6045544584 +61 21 11.589382368   15.20 15.50     ~ 617 2
5 NGC 2992 Sy2 09 45 42.045 -14 19 34.90 13.54 13.14 12.18 12.6 12.2 ~ 951 3
6 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 6156 6
7 NGC 3690C G 11 28 30.70 +58 33 48.4           ~ 351 0
8 NGC 3690 IG 11 28 31.0 +58 33 41   13.19 12.86     ~ 1015 4
9 NGC 3690B GiP 11 28 31.02 +58 33 40.7   11.8       ~ 635 4
10 NGC 3690NE AGN 11 28 33.07 +58 33 54.2   11.8       ~ 635 4
11 Z 294-4 Sy1 12 56 14.2341182928 +56 52 25.238373852   14.68 13.84     ~ 2096 3
12 Z 271-60 Sy2 13 44 42.1883001099 +55 53 13.596220922   15.68 14.91     ~ 958 3
13 IC 1127 SyG 15 34 57.22396 +23 30 11.6084   14.76 13.88     ~ 3090 4
14 NGC 6251 Bla 16 32 31.96989253 +82 32 16.3999044 15.24 14.66 12.89 7.62   ~ 772 1
15 NGC 6240 Sy2 16 52 58.9 +02 24 03   14.31 13.37     ~ 1734 2
16 LEDA 60189 LIN 17 23 21.96264 -00 17 00.8088   15.1       ~ 454 0
17 NAME Super Antennae Sy2 19 31 21.4272801984 -72 39 21.442847832   17.39 16.37 14.65   ~ 318 3
18 ESO 286-19 LIN 20 58 26.8183783008 -42 38 59.411838156   14.79 14.79 14.20   ~ 318 0
19 ESO 148-2 Sy2 23 15 46.76280 -59 03 15.6924   14.94 14.73 13.95   ~ 289 1

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