2010MNRAS.407..645J

Query : 2010MNRAS.407..645J

2010MNRAS.407..645J - Mon. Not. R. Astron. Soc., 407, 645-650 (2010/September-1)

A bright off-nuclear X-ray source: a type IIn supernova, a bright ULX or a recoiling supermassive black hole in CXOJ122518.6+144545.

JONKER P.G., TORRES M.A.P., FABIAN A.C., HEIDA M., MINIUTTI G. and POOLEY D.

Abstract (from CDS):

In this paper we report the discovery of CXOJ122518.6+144545, a peculiar X-ray source with a position 3.6±0.2 arcsec off-nuclear from a Sloan Digital Sky Survey Data Release 7 (SDSS DR7) z = 0.0447 galaxy. The 3.6 arcsec offset corresponds to 3.2 kpc at the distance of the galaxy. The 0.3-8keV X-ray flux of this source is 5x10–14 erg/cm2/s and its 0.3-8keV luminosity is 2.2x1041 erg/s (2.7x1041 erg/s; 0.5-10keV) assuming that the source belongs to the associated galaxy. We find a candidate optical counterpart in archival Hubble Space Telescope/Advanced Camera for Surveys g'-band observations of the field containing the galaxy obtained on 2003 June 16. The observed magnitude of g' = 26.4±0.1 corresponds to an absolute magnitude of -10.1. We discuss the possible nature of the X-ray source and its associated candidate optical counterpart and conclude that the source is either a very blue Type IIn supernova, an ultraluminous X-ray source with a very bright optical counterpart or a recoiling supermassive black hole.

Abstract Copyright: © 2010 The Authors. Journal compilation © 2010 RAS

Journal keyword(s): galaxies: individual: SDSS J122518.86+144547.7 - X-rays: binaries - X-rays: individual: CXO J122518.6+144545

Simbad objects: 16

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Number of rows : 16
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 MCG-06-02-022a EmG 00 37 41.1133192392 -33 42 58.515101748   19.26   18.52   ~ 314 1
2 ESO 243-49 GiC 01 10 27.7550638752 -46 04 27.356310264 16.54 14.92   13.48   ~ 187 0
3 NGC 2276 AG? 07 27 14.485 +85 45 16.20   12.3       ~ 393 0
4 QSO J0927+2943 QSO 09 27 12.6492308448 +29 43 44.087902824   17.7 18.63 18.3   ~ 92 3
5 M 81 Sy2 09 55 33.1726556496 +69 03 55.062505368   7.89 6.94     ~ 4725 3
6 2CXO J095550.1+694046 HXB 09 55 50.12 +69 40 46.4           ~ 294 1
7 NAME Lockman Hole reg 10 45 00.0 +58 00 00           ~ 910 0
8 2MASS J10504134+3456317 Sy1 10 50 41.3549218488 +34 56 31.431444324   19.83 19.24     ~ 37 1
9 NAME Antennae IG 12 01 53.170 -18 52 37.92           ~ 1749 0
10 CXOU J122518.6+144545 ULX 12 25 18.650 +14 45 45.76           ~ 13 0
11 2MASX J12251885+1445480 GiC 12 25 18.856 +14 45 48.01           ~ 13 0
12 SDSS J122519.45+144709.2 QSO 12 25 19.4498545848 +14 47 09.312887724           ~ 4 0
13 NGC 4395 Sy2 12 25 48.8633109888 +33 32 48.700168152 10.84 10.54 10.11 9.98   ~ 1286 1
14 [JRW2005b] 122 UX? 14 03 32.38 +54 21 03.0   21.13       ~ 120 0
15 NGC 5775 GiG 14 53 57.653 +03 32 40.10   13.0 11.34     ~ 460 2
16 QSO J1536+0441 QSO 15 36 36.2230215960 +04 41 27.067415352   17.75 17.41     ~ 81 1

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