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

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ID# 5

1H 1659-487

GX 339-4 = V821 Ara

(Gallo2004)

RA     (ICRS)     DEC [hh:mm:ss.ss]          [dd:mm:ss.ss] 17:02:49.40  -48:47:23.40

ℓ                      b [deg]                            [deg] 338.9390902  -04.32648295

Year of discovery: 1972  
(Markert1973)

# of outbursts after discovery: >20

Basic data

Distance [kpc]	>5	Hynes2004Heida2017
Distance to the plane (z) [kpc]	>-0.45	Hynes2004Heida2017
Orbital period (Porb) [h]	42.21±0.01	Heida2017Hynes2003aLevine2006
Peak X-ray flux [erg s-1 cm-2] [keV]	2.56E-08 [2-10]	XTE/ASM
Outburst magnitude (AB)	I=13.6±0.1	Buxton2012
Quiescent magnitude (AB)	r=19.9±0.1	Shahbaz2001Lewis2012
E(B-V) [mag]	1.2	Hynes2004

Dynamically confirmed BH

NOTES

1H J1659-487 (GX 339-4) is a quasi persistent source. Peak X-ray flux from the 2002 outburst (Homan2005). Peak outburst magnitude obtained from Buxton2012 (MJD=54132).

Dynamical parameters

Orbital period [h]	42.21±0.01	Heida2017Hynes2003aLevine2006
Star's spectral type	K1 – 2 probably IV	Hynes2004Munoz-Darias2008Heida2017
Star's radial velocity amplitude (K2) [km/s]	>219±3	Heida2017
Mass function 'f(M1)' [M☉]	1.91±0.08	Heida2017
BH mass (M1) [M☉]	2.3 – 9.5	Heida2017
Mass ratio (q=M2/M1)	≤0.18±0.05	Heida2017
Inclination angle (i) [deg]	37 – 78	Heida2017
Rot. broadening (v sini) [km/s]	64±8	Heida2017

Optical/NIR magnitudes

Mag. Outburst (AB) Buxton2012
	V=14.7±0.1		I=13.6±0.1
	J=12.6±0.1
Mag. Quiescent (AB) Shahbaz2001Lewis2012
			R=21.6±0.3
r=19.9±0.1

Aladin finding chart

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1H 1659-487 in Simbad

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Finding charts

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Comparison stars (AB mag)

Buxton2012

V1=18.50±0.06	I1=15.57±0.07	J1=14.26±0.09	H1=13.88±0.09
V2=17.39±0.05	I2=15.80±0.07	J2=14.79±0.09	H2=14.41±0.10
V3=16.95±0.05	I3=15.93±0.06