2019MNRAS.483.3566V


C.D.S. - SIMBAD4 rel 1.7 - 2021.05.09CEST06:55:34

2019MNRAS.483.3566V - Mon. Not. R. Astron. Soc., 483, 3566-3573 (2019/March-1)

Discovery of a transient ultraluminous X-ray source in the elliptical galaxy M86.

VAN HAAFTEN L.M., MACCARONE T.J., RHODE K.L., KUNDU A. and ZEPF S.E.

Abstract (from CDS):

We report the discovery of the transient ultraluminous X-ray source (ULX) CXOU J122602.3+125951 (hereafter M86 tULX-1), located 3'52'' (19 kpc) north-west of the centre of the giant elliptical galaxy M86 (NGC 4406) in the Virgo Cluster. The spectrum of M86 tULX-1 can be fit by a power law plus multicolour disc model with a 1.0+0.8–2.6 index and a 0.66+0.17–0.11 keV inner disc temperature, or by a power law with a 1.86 ± 0.10 index. For an isotropically emitting source at the distance of M86, the luminosity based on the superposition of spectral models is (5 ± 1) x 1039 erg s–1. Its relatively hard spectrum places M86 tULX-1 in a hitherto unpopulated region in the luminosity-disc temperature diagram, between other ULXs and the (sub-Eddington) black-hole X-ray binaries. We discovered M86 tULX-1 in an archival 148-ks 2013 July Chandra observation, and it was not detected in a 20-ks 2016 May Chandra observation, meaning it faded by a factor of at least 30 in three years. Based on our analysis of deep optical imaging of M86, it is probably not located in a globular cluster. It is the brightest ULX found in an old field environment unaffected by recent galaxy interaction. We conclude that M86 tULX-1 may be a stellar-mass black hole of ∼30-100 M with a low-mass giant companion, or a transitional object in a state between the normal stellar-mass black holes and the ultraluminous state.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): stars: black holes - galaxies: individual: (M86, NGC 4406) - X-rays: binaries - X-rays: individual: CXOU J122602.3+125951

Simbad objects: 27

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Number of rows : 27

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NAME NGC 300 2010da s*b 00 55 04.86 -37 41 43.7           LBV 118 0
2 RX J031820.3-662911 UX? 03 18 20.00 -66 29 10.9           ~ 176 1
3 2E 756 ULX 03 18 22.00 -66 36 04.3   23.5 23.6     O9.5 204 3
4 NGC 1399 BiC 03 38 29.083 -35 27 02.67 11.05 9.74 9.59 8.12   ~ 1478 1
5 [SST2011] J034555.61+680455.3 ULX 03 45 55.612 +68 04 55.29           ~ 145 1
6 [SST2011] J081929.00+704219.3 ULX 08 19 28.99 +70 42 19.4           ~ 159 2
7 RX J0957.9+6903 ULX 09 57 53.290 +69 03 48.20           ~ 205 4
8 NGC 4150 GiG 12 10 33.655 +30 24 05.35 12.72 12.44 11.64     ~ 288 2
9 CXOU J122518.6+144545 ULX 12 25 18.650 +14 45 45.76           ~ 12 0
10 CXOU J122602.3+125951 ULX 12 26 02.30 +12 59 51.1           ~ 1 0
11 M 86 GiG 12 26 11.814 +12 56 45.49 10.32 9.83 8.90   7.50 ~ 1024 1
12 CXO J122611.8+125647 ULX 12 26 11.830 +12 56 47.80           ~ 1 0
13 NAME Vir I ClG 12 26 32.1 +12 43 24   10.00 8.49     ~ 6028 0
14 [LB2005] NGC 4472 X3 BH? 12 29 39.73 +07 53 30.6           ~ 24 2
15 M 49 Sy2 12 29 46.798 +08 00 01.48   13.21 12.17     ~ 1990 2
16 LEDA 43234 G 12 48 15.2244073438 +17 46 26.496619532   16.5       ~ 163 0
17 CXOU J132518.2-430304 UX? 13 25 18.24 -43 03 04.5           ~ 9 0
18 NAME Centaurus A Sy2 13 25 27.61509104 -43 01 08.8056025   8.18 6.84 6.66   ~ 4094 3
19 [FK2005] 23 ULX 13 29 38.62 +58 25 05.6           ~ 111 2
20 [FK2005] 25 ULX 14 03 19.63 -41 22 58.7           ~ 201 0
21 NAME NGC 5907 ULX-2 ULX 15 16 01.100 +56 17 51.40           ~ 5 0
22 NAME Galactic Center gam 17 45 39.60213 -29 00 22.0000           ~ 12163 0
23 [FT87] NGC 6946 1 SNR 20 35 00.74 +60 11 30.6           ~ 92 0
24 ASASSN -15oi SN* 20 39 09.096 -30 45 20.71           ~ 68 0
25 NGC 7793 GiG 23 57 49.7533807411 -32 35 27.708304655 10.26 9.74 9.28 9.06 9.7 ~ 967 2
26 [RP99] P9 X 23 58 08.70 -32 34 03.7   21.2       ~ 7 0
27 GrW 150914 GWE ~ ~           ~ 426 1

    Equat.    Gal    SGal    Ecl

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2021.05.09-06:55:34

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