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

« Previous BHT   Next BHT »

ID# 27

XTE J1550-564

V381 Nor

( Corbel2001 )

RA     [J2000]     DEC

[]          []

15:50:58.70  -56:28:35.20

ℓ                      b

[deg]                            [deg]

325.8824005  -01.82687035

Year of discovery: 1998  
( Smith1998a )

# of outbursts after discovery: 5

Basic data

Distance [kpc] 4.5±0.5 Orosz2011a Orosz2002
Distance to the plane (z) [kpc] -0.14±0.02 Orosz2011a Orosz2002
Orbital period (Porb) [h] 37.0088±0.0001 Orosz2011a Orosz2002
Peak X-ray flux [erg s-1 cm-2]
Outburst magnitude (AB) V∼16.6 Orosz2002
Quiescent magnitude (AB) V=22.0±0.2 Orosz2002 Orosz2011a Calvelo2010 Jain2001
E(B-V) [mag] 1.33 Orosz2011a

Dynamically confirmed BH


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 [h] 37.0088±0.0001 Orosz2011a Orosz2002
Star's spectral type K2 – 4IV Orosz2011a Orosz2002
Star's radial velocity amplitude (K2) [km/s] 363±6 Orosz2011a Orosz2002
Mass function 'f(M1)' [M] 7.7±0.4 Orosz2011a Orosz2002
BH mass (M1) [M] 7.8 – 15.6 Orosz2011a Orosz2002
Mass ratio (q=M2/M1) ≈0.03 Orosz2011a Orosz2002
Inclination angle (i) [deg] 75±4 Orosz2011a Orosz2002
Rot. broadening (v sini) [km/s] 55±5 Orosz2011a Orosz2002

Optical/NIR magnitudes

Mag. Outburst (AB)
Mag. Quiescent (AB)
Orosz2002 Orosz2011a Calvelo2010 Jain2001
B>23.8±0.1 V=22.0±0.2 R∼22
J=19.24±0.04 H=17.6±0.1 Ks=18.00±0.04
Aladin finding chart
Scroll to zoom. Set survey image in "Manage layers"
Default image: DSS2 Red
XTE J1550-564 in Simbad

Finding charts

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

Finding chart
Finding chart
Finding chart
Finding chart
Finding chart

Comparison stars (AB mag)

B117.0±0.2 V116.2±0.2 R115.6±0.2
B217.6±0.2 V216.0±0.2 R214.7±0.1
B316.7±0.1 V315.8±0.2 R315.0±0.2
B916.3±0.2 V914.5±0.2 R911.9±0.2
B1015.7±0.1 V1014.4±0.2 R1013.3±0.1
B1117.4±0.2 V1116.5±0.2 R1115.8±0.2
B1214.5±0.1 V1213.4±0.2 R1212.5±0.1
B1317.0±0.1 V1315.8±0.2 R1314.7±0.1
B1417.2±0.2 V1415.9±0.2 R1414.8±0.2
B1515.4±0.1 V1513.5±0.2 R1511.4±0.2
B1617.2±0.2 V1616.1±0.2 R1615.0±0.4
B1716.9±0.2 V1715.4±0.2 R1714.0±0.2
B1817.5±0.2 V1816.0±0.2 R1814.6±0.2
B1916.3±0.1 V1914.9±0.2 R1913.7±0.1
B2016.9±0.2 V2015.5±0.2 R2014.5±0.1
B2117.0±0.2 V2115.2±0.2 R2113.6±0.2
B2216.0±0.1 V2214.8±0.2 R2213.9±0.1
B2316.1±0.1 V2315.2±0.2 R2314.6±0.1
B2417.4±0.2 V2416.6±0.2 R2415.8±0.2
B2515.1±0.1 V2514.5±0.2 R2514.0±0.1
B2617.1±0.2 V2615.8±0.2 R2614.7±0.2
B2714.4±0.1 V2714.0±0.2 R2714.0±0.1
B2815.4±0.1 V2813.8±0.2 R2812.3±0.2
J 115.6±0.3 H 115.7±0.3 Ks116.1±0.2
J 214.0±0.2 H 213.7±0.2 Ks214.0±0.2
J 314.9±0.3 H 314.9±0.2 Ks315.2±0.2
J 415.5±0.3 H 415.3±0.2 Ks415.6±0.2
J 514.9±0.3 H 514.7±0.2 Ks515.0±0.3
J 614.8±0.3 H 614.8±0.2 Ks615.2±0.3
J 715.3±0.3 H 715.0±0.2 Ks715.3±0.2
J 815.0±0.3 H 814.8±0.2 Ks815.1±0.2

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.

Last modified: 27 August 2021.