2018MNRAS.475.3561U


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.19CEST19:16:32

2018MNRAS.475.3561U - Mon. Not. R. Astron. Soc., 475, 3561-3576 (2018/April-2)

Multiband counterparts of two eclipsing ultraluminous X-ray sources in M 51.

URQUHART R., SORIA R., JOHNSTON H.M., PAKULL M.W., MOTCH C., SCHWOPE A., MILLER-JONES J.C.A. and ANDERSON G.E.

Abstract (from CDS):

We present the discovery and interpretation of ionized nebulae around two ultraluminous X-ray sources in M 51; both sources share the rare property of showing X-ray eclipses by their companion stars and are therefore prime targets for follow-up studies. Using archival Hubble Space Telescope images, we found an elongated, 100-pc-long emission-line structure associated with one X-ray source (CXOM51 J132940.0+471237; ULX-1 for simplicity), and a more circular, ionized nebula at the location of the second source (CXOM51 J132939.5+471244; ULX-2 for simplicity). We observed both nebulae with the Large Binocular Telescope's Multi-Object Double Spectrograph. From our analysis of the optical spectra, we argue that the gas in the ULX-1 bubble is shock-ionized, consistent with the effect of a jet with a kinetic power of ≃2 x 1039 erg s–1. Additional X-ray photoionization may also be present, to explain the strength of high-ionization lines such as He II λ4686 and [Ne V] λ3426. On the other hand, the emission lines from the ULX-2 bubble are typical for photoionization by normal O stars suggesting that the nebula is actually an H II region not physically related to the ULX but is simply a chance alignment. From archival Very Large Array data, we also detect spatially extended, steep-spectrum radio emission at the location of the ULX-1 bubble (consistent with its jet origin), but no radio counterpart for ULX-2 (consistent with the lack of shock-ionized gas around that source).

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

Journal keyword(s): accretion, accretion discs - stars: black holes - X-rays: binaries

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 - 2020
#notes
1 [HPH2013] 149 XB? 00 42 43.68 +41 25 18.6           ~ 27 0
2 [SST2011] J034555.61+680455.3 ULX 03 45 55.612 +68 04 55.29           ~ 141 1
3 [SST2011] J081929.00+704219.3 ULX 08 19 28.99 +70 42 19.4           ~ 158 2
4 M 81 Sy2 09 55 33.17306143 +69 03 55.0609270   7.89 6.94     ~ 3996 5
5 NAME M81-ULS1 ULX 09 55 42.146 +69 03 36.51     21.67     ~ 33 0
6 RX J0957.9+6903 ULX 09 57 53.290 +69 03 48.20           ~ 200 4
7 RX J132939+47126 HXB 13 29 39.48 +47 12 43.6   22.59 23.27   24.80 ~ 25 1
8 [KLK2016] X107 SFR 13 29 39.98 +47 12 36.9           ~ 12 0
9 M 51 GiP 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 3832 4
10 M 83 SBG 13 37 00.919 -29 51 56.74 8.85 8.11 7.52 7.21   ~ 2248 2
11 CXOU J133701.1-295151 SR? 13 37 01.11 -29 51 52.1           ~ 15 0
12 [FK2005] 25 ULX 14 03 19.63 -41 22 58.7           ~ 197 0
13 [LB2005] NGC 5457 X9 X 14 03 41.42 +54 19 05.2           ~ 4 0
14 NGC 6946 H2G 20 34 52.332 +60 09 13.24   10.5       ~ 2258 2
15 [FT87] NGC 6946 1 SNR 20 35 00.74 +60 11 30.6           ~ 90 0
16 [BL97] N7793-S26 SNR 23 58 00.27 -32 33 22.1           ~ 48 0

    Equat.    Gal    SGal    Ecl

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2020.10.19-19:16:32

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