2015MNRAS.450..787S

Query : 2015MNRAS.450..787S

2015MNRAS.450..787S - Mon. Not. R. Astron. Soc., 450, 787-793 (2015/June-2)

The hyperluminous X-ray source candidate in IC 4320: another HLX bites the dust.

SUTTON A.D., ROBERTS T.P., GLADSTONE J.C. and WALTON D.J.

Abstract (from CDS):

The known members of the class of hyperluminous X-ray sources (HLXs) are few in number, yet they are of great interest as they are regarded as the likeliest intermediate-mass black hole (IMBH) candidates amongst the wider population of ultraluminous X-ray sources (ULXs). Here we report optical photometry and spectroscopy of an HLX candidate associated with the galaxy IC 4320, that reveal it is a background AGN. We discuss the implications of the exclusion of this object from the small number of well-studied HLXs, that appears to accentuate the difference in characteristics between the good IMBH candidate ESO 243-49 HLX-1 and the small handful of other HLXs.

Abstract Copyright: © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2015)

Journal keyword(s): accretion, accretion discs - black hole physics - X-rays: binaries - X-rays: galaxies

Simbad objects: 23

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Number of rows : 23
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 [GWA2003] 10 HXB 00 37 39.22 -33 42 50.6           ~ 7 0
2 MCG-06-02-022a EmG 00 37 41.1133192392 -33 42 58.515101748   19.26   18.52   ~ 314 1
3 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
4 ESO 243-49 GiC 01 10 27.7550638752 -46 04 27.356310264 16.54 14.92   13.48   ~ 187 0
5 [FWB2009] HLX-1 ULX 01 10 28.30 -46 04 22.3     24.5 23.80   ~ 230 1
6 NAME NGC 470 HLX1 ULX 01 19 42.8 +03 24 22           ~ 9 0
7 NGC 470 GiP 01 19 44.8526263032 +03 24 36.027176544 12.63 12.53 11.78     ~ 287 1
8 [SRW2012] Src. 3 UX? 07 26 49.45 +85 45 48.3           ~ 20 0
9 NGC 2276 AG? 07 27 14.485 +85 45 16.20   12.3       ~ 393 0
10 [CRS94] 2 X 09 55 40.8 +69 40 55           ~ 3 0
11 2CXO J095550.1+694046 HXB 09 55 50.12 +69 40 46.4           ~ 294 1
12 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 6156 6
13 3XMM J120405.8+201344 Sy1 12 04 05.8492369800 +20 13 45.168648132   19.82 19.62     ~ 14 0
14 CXOU J122518.6+144545 ULX 12 25 18.650 +14 45 45.76           ~ 13 0
15 BD+25 2534 HS* 12 37 23.5161671712 +25 03 59.867922240 9.117 10.26 10.59 10.642 10.809 sdB1(k) 268 0
16 [SRW2012] Src. 6 UX? 12 59 39.8 +27 57 16           ~ 2 0
17 XMMU J132218.3-164247 X 13 22 18.3 -16 42 47           ~ 5 1
18 IC 4320 EmG 13 44 03.7109865240 -27 13 54.033092616   14.25   12.70 13.07 ~ 47 0
19 2XMM J134404.1-271410 X 13 44 04.1 -27 14 10           ~ 5 0
20 M 101 GiP 14 03 12.583 +54 20 55.50   8.46 7.86 7.76   ~ 3138 2
21 NGC 5775 GiG 14 53 57.653 +03 32 40.10   13.0 11.34     ~ 460 2
22 X Nor X-1 LXB 16 34 01.610 -47 23 34.80           ~ 579 0
23 NGC 7793 GiG 23 57 49.7540045856 -32 35 27.701550744 10.26 9.74 9.28 9.06 9.7 ~ 1188 2

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