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

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ID# 31

XTE J1859+226

V406 Vul

( Garnavich1999 )

RA     [J2000]     DEC

[]          []

18:58:41.58  +22:39:29.40

ℓ                      b

[deg]                            [deg]

054.0460820  +08.60760698

Year of discovery: 1999  
( Wood1999 )

# of outbursts after discovery:

Basic data

Distance [kpc] 12.5±1.5 Corral-Santana2011
Distance to the plane (z) [kpc] 1.9±0.2 Corral-Santana2011
Orbital period (Porb) [h] 6.58±0.05 Corral-Santana2011
Peak X-ray flux [erg s-1 cm-2]
Outburst magnitude (AB) R∼15.2 Garnavich1999 Zurita2002
Quiescent magnitude (AB) R=22.54±0.07 Zurita2002 Gelino2010
E(B-V) [mag] 0.58 Hynes2002

Dynamically confirmed BH


Dynamical parameters

Orbital period [h] 6.58±0.05 Corral-Santana2011
Star's spectral type ~K5V Corral-Santana2011
Star's radial velocity amplitude (K2) [km/s] 541±70 Corral-Santana2011
Mass function 'f(M1)' [M] 4.5±0.6 Corral-Santana2011
BH mass (M1) [M] >5.42 Corral-Santana2011
Mass ratio (q=M2/M1)
Inclination angle (i) [deg] <70 Corral-Santana2011
Rot. broadening (v sini) [km/s]

Optical/NIR magnitudes

Mag. Outburst (AB)
Garnavich1999 Zurita2002
V=15.3 R∼15.2 I=15.01
Mag. Quiescent (AB)
Zurita2002 Gelino2010
V=23.25±0.09 R=22.54±0.07
J=20.97±0.03 H=20.68±0.05 Ks=20.94±0.35
Aladin finding chart
Scroll to zoom. Set survey image in "Manage layers"
Default image: DSS2 Red
XTE J1859+226 in Simbad

Pan-STARRS1 finding chart

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PS1 Finding chart PS1 Finding chart

Finding charts

Orientation: North up, East left. Object marked
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Finding chart reference: Zurita2002

Finding chart
Finding chart
Finding chart

Comparison stars (AB mag)

RC1=20.37±0.06 RC2=19.47±0.05 RC3=18.92±0.05
RC4=20.21±0.06 RC5=19.64±0.05

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.