2025RAA....25h5013W

Query : 2025RAA....25h5013W

2025RAA....25h5013W - Research in Astron. and astroph., 25, part no 8, 5013 (2025/August-0)

Revealing a Major Merger in the Nearby Galaxy Group IC 1262 with Chandra Observations.

WANG C., WANG Y., XIA J., FAN X. and XU H.-G.

Abstract (from CDS):

We analyze the deep Chandra data of the nearby IC 1262 group, and find that the bow-shaped structure, located about 17 kpc (25″) east of the X-ray peak, is a cold front moving eastward with a Mach number of M = 0.7± 0.1. Furthermore, the line-of-sight velocity distribution of the member galaxies is clearly divided into two subgroups. Assuming the same mass-to-light ratio, the group is undergoing a major merger. Since the cooler core of the group as a whole is not destroyed by the merger, and the high-velocity subgroup has a component of eastward movement, it can be naturally explained that the cold front appears on the east side of the group center.

Abstract Copyright: © 2025. National Astronomical Observatories, CAS and IOP Publishing Ltd. All rights, including for text and data mining, AI training, and similar technologies, are reserved.

Journal keyword(s): galaxies: groups: individual (IC 1262 group) - ISM: kinematics and dynamics - X-rays: galaxies: clusters

Simbad objects: 3

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Number of rows : 3
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 IC 1262 rG 17 33 02.0176600056 +43 45 34.803150516   14.9       ~ 79 0
2 IC 1263 G 17 33 07.2171697200 +43 49 19.338029652   14.8       ~ 27 0
3 Z 226-28 GiC 17 33 20.4060202896 +43 54 48.442994568   15.5       ~ 14 0

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