BlackCAT A Catalog of Stellar-Mass Black Holes in X-ray Binaries

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ID# 10

SLX 1746-331

(Torres2023)

RA     (ICRS)     DEC

[hh:mm:ss.ss]          [dd:mm:ss.ss]

17:49:48.96  -33:12:17.10


ℓ                      b

[deg]                            [deg]

356.8092322  -02.97358081

Year of discovery: 1985  
(Skinner1990)

# of outbursts after discovery: 3


Basic data

Distance [kpc]
Distance to the plane (z) [kpc]
Orbital period (Porb) [h]
Peak X-ray flux [erg s-1 cm-2]
[keV]
1.37E-08
[2-10]
XTE/ASM
Outburst magnitude (AB) Ks=18.78±0.06 Torres2007b
Quiescent magnitude (AB)
E(B-V) [mag] 1.278 Schlafly2011
Spectral type


NOTES

SLX 1746-331 is a galactic centre source and therefore suffer of large extinction. It showed outbursts in 2003 (Markwardt2003b), 2007 (Markwardt2007) and 2023 (Negoro2023a,Kennea2023).
The peak X-ray flux is taken from the 2003 outburst. It also showed some activity in 2011 (Ozawa2011).
The optical counterpart reported by Joshi2023 differs from the one reported during the 2017 outburst. Torres2023 re-analysed the IR data and found that the coordinates given in Torres2007b were erroneously reported, new coordinates are provided in Torres2023.
The system showed another outburst in 2023 (Negoro2023a). The analysis of the X-ray flux and assuming an inclination of 0º was used by Peng2023 to estimate a lower limit to the mass of the compact object of 3&plumn;2 M☉ which would imply a BH accretion.




Optical/NIR magnitudes

Mag. Outburst (AB)
Torres2007b
Ks=18.78±0.06
Mag. Quiescent (AB)
Additional information
New finding chart (2023 outburst) (Joshi2023)
Aladin finding chart
Scroll to zoom. Set survey image in "Manage layers"
Default image: DSS2 Red
SLX 1746-331 in Simbad

Finding charts

Orientation: North up, East left. Object marked
Click to enlarge in new tab/window

Finding chart reference: Torres2007b

Finding chart


This research has made use of NASA's Astrophysics Data System (ADS), the SIMBAD database operated at CDS (Strasbourg, France) and APLpy
Please acknowledge the use of this catalogue in any published work you derive from it.

Last modified: 25 March 2024.