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

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ID# 50

Swift J1357.2-0933

(Rau2011)

RA     (ICRS)     DEC [hh:mm:ss.ss]          [dd:mm:ss.ss] 13:57:16.82  -09:32:38.55

ℓ                      b [deg]                            [deg] 328.7018426  50.00430936

Year of discovery: 2011  
(Krimm2011a)

# of outbursts after discovery: 3

Basic data

Distance [kpc]	≥6 / >2.29	Charles2019MataSanchez2015
Distance to the plane (z) [kpc]	≥4.6 / >1.8	Charles2019MataSanchez2015
Orbital period (Porb) [h]	2.8±0.3	Corral-Santana2013MataSanchez2015
Peak X-ray flux [erg s-1 cm-2] [keV]	2.23E-10 [2-10]	ArmasPadilla2013
Outburst magnitude (AB)	r'=16.3±0.05	Rau2011
Quiescent magnitude (AB)	r’=21.71±0.08	Shahbaz2013MataSanchez2015ArmasPadilla2014a
E(B-V) [mag]	0.037	Schlafly2011

Strictly speaking it is not a dynamical BH but there is either a robust mass function or mass determination suggesting the presence of a BH

NOTES

Swift J1357.2-0933: Strictly speaking is not a dynamical BH because it lacks a detection of the secondary star but it has a robust mass function determination (Corral-Santana2013,MataSanchez2015), also based on the FWHM(Hα) scaling from Casares2015 coupled with Porb (Corral-Santana2018,Mata-Sanchez2015). The distance is still uncertain (see Rau2011,Shahbaz2013,MataSanchez2015,Charles2019). It showed other outbursts in 2017 (Drake2017), 2019 (vanVelzen2019) and 2021 (Bellm2021)

Dynamical parameters

Orbital period [h]	2.8±0.3	Corral-Santana2013MataSanchez2015
Star's spectral type	M2-4V	MataSanchez2015
Star's radial velocity amplitude (K2) [km/s]	967±49	MataSanchez2015
Mass function 'f(M1)' [M☉]	11±2.1	MataSanchez2015
BH mass (M1) [M☉]	12.4±3.6	MataSanchez2015Casares2016
Mass ratio (q=M2/M1)	∼0.04	MataSanchez2015Casares2016
Inclination angle (i) [deg]	∼90	Corral-Santana2013MataSanchez2015

Optical/NIR magnitudes

Mag. Outburst (AB) Rau2011
		r'=16.3±0.05
Mag. Quiescent (AB) Shahbaz2013MataSanchez2015ArmasPadilla2014a
u'=23.12±0.04		g'=22.29±0.08
r’=21.71±0.08		i’=21.2±0.4
J=20.51±0.06	H=20.07±0.05	Ks=20.09±0.05

Aladin finding chart

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Swift J1357.2-0933 in Simbad

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Pan-STARRS1 finding chart

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Finding charts

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Finding chart reference: Corral-Santana2013

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