2013ApJ...770...17G

Query : 2013ApJ...770...17G

2013ApJ...770...17G - Astrophys. J., 770, 17 (2013/June-2)

X-ray discovery of a dwarf-galaxy-galaxy collision.

GARMIRE G.P.

Abstract (from CDS):

We report the discovery of a probable dwarf galaxy colliding with NGC 1232. This collision is visible only in the X-ray spectral band, and it is creating a region of shocked gas with a temperature of 5.8 MK covering an impact area 7.25 kpc in diameter. The X-ray luminosity is 3.7x1038 erg/s. The long lifetime of this gas against radiative and adiabatic cooling should permit the use of the luminous afterglow from such collisions to be used as a way of estimating their importance in galaxy evolution.

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Journal keyword(s): galaxies: dwarf - galaxies: evolution - galaxies: individual: NGC 1232 - X-rays: galaxies

Simbad objects: 9

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Number of rows : 9
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 1232 EmG 03 09 45.514 -20 34 45.48   10.67 9.87 9.53 10.2 ~ 296 0
2 NGC 1232A AG? 03 10 01.94 -20 36 02.2   15.28   14.61   ~ 20 0
3 NAME Eridanus ClG GrG 03 38 32.00 -22 18 51.0           ~ 200 0
4 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
5 NAME 30 Dor Nebula SFR 05 38 36.0 -69 05 11           ~ 1276 2
6 NGC 2903 AGN 09 32 10.111 +21 30 02.99 10.44 9.75 9.07 8.68   ~ 1204 3
7 M 101 GiP 14 03 12.583 +54 20 55.50   8.46 7.86 7.76   ~ 3138 2
8 NAME Cyg Superbubble PoC 20 47 +41.2           ~ 92 1
9 NAME Local Group GrG ~ ~           ~ 9325 0

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