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

ID# 27

XTE J1550-564

V381 Nor

RA (h:m:s)  DEC (º:':")  J2000:
15:50:58.70 -56:28:35.20
( Corbel2001 )

Galactic l (º)  b (º)  J2000:
325.8824005  -01.8268704

Year of discovery: 1998  
( Smith1998a )

# of outbursts after discovery: 5

Dynamically confirmed BH

Basic data

Distance (d) 4.5±0.5 (kpc) Orosz2011a Orosz2002
d above plane (z) -0.14±0.02 (kpc) Orosz2011a Orosz2002
Orbital period 37.0088±0.0001 (h) Orosz2011a Orosz2002
Peak X-ray flux 1.61E-07
(erg/s/cm2) [keV] Wu2002
Outburst magnitude (AB) V∼16.6 (mag) Orosz2002
Quiescent magnitude (AB) i=19.044±0.03 (mag) Orosz2002 Calvelo2010 Orosz2011a Jain2001
E(B-V) 1.33 (mag) Orosz2011a
Notes XTE J1550-564 showed a second complete outburst in 2000 ( Smith2000a ) and other three faint mini-outbursts in 2001, 2002 and 2003 ( Tomsick2001 , Belloni2002 , Dubath2003 ).

Dynamical parameters

Orbital period 37.0088±0.0001 (h) Orosz2011a Orosz2002
Star's spectral type K2 – 4IV Orosz2011a Orosz2002
Star's radial velocity amplitude (K2) 363±6 (km/s) Orosz2011a Orosz2002
Mass function 'f(M1)' 7.7±0.4 (M) Orosz2011a Orosz2002
BH mass (M1) 7.8 – 15.6 (M) Orosz2011a Orosz2002
Mass ratio (q=M/M1) ≈0.03 Orosz2011a Orosz2002
Inclination angle (i) 75±4 (deg) Orosz2011a Orosz2002
Rot. broadening (v sini) 55±5 (km/s) Orosz2011a Orosz2002

Optical/NIR magnitudes

Mag. Outburst (AB) Orosz2002
Mag. Quiescence (AB) Orosz2002 Calvelo2010 Orosz2011a Jain2001
i V B J H
=19.044±0.03 =22±0.4 >23.8±0.1 =19.24±0.04 =17.6±0.1
Ks R V
=18±0.04 ∼22 =22±0.2
Scroll to zoom. Set survey image in Controls
Default image: DSS2 Red
XTE J1550-564 in Simbad
Finding charts orientation:North up, East left
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Object marked with lines

Comparison stars reference: Jain2001a

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