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

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ID# 53

MAXI J1305-704

( Coriat2012 )

RA     [J2000]     DEC

[]          []

13:06:55.30  -70:27:05.11

ℓ                      b

[deg]                            [deg]

304.2379729  -07.61898877

Year of discovery: 2012  
( Sato2012a )

# of outbursts after discovery:

Basic data

Distance [kpc] 7.5+1.8-1.4 MataSanchez2021
Distance to the plane (z) [kpc] -1.0±0.2 MataSanchez2021
Orbital period (Porb) [h] 9.5±0.1 MataSanchez2021
Peak X-ray flux [erg s-1 cm-2]
Outburst magnitude (AB) i’=16.61±0.05 Greiner2012
Quiescent magnitude (AB) i’=20.21±0.08 MataSanchez2021
E(B-V) [mag] 0.18 MataSanchez2021

Dynamically confirmed BH


MAXI J1305-704 showed X-ray dips during the outburst ( Shidatsu2013 ).
There is a contaminant star 1.64” North of the object ( MataSanchez2021 ).
The values of M1 and M2 are the most conservative given the different results of the inclination obtained from the photometric modelling. The best fit of the inclination (i=72+5-8 deg) would imply 9.0+1.5-1.0 and 0.43±0.16 M for M1 and M2 respectively ( MataSanchez2021 ).

Dynamical parameters

Orbital period [h] 9.5±0.1 MataSanchez2021
Star's spectral type K3 – 5 MataSanchez2021
Star's radial velocity amplitude (K2) [km/s] 554±8 MataSanchez2021
Mass function 'f(M1)' [M] 6.9±0.3 MataSanchez2021
BH mass (M1) [M] 8.9+1.6-1.0 MataSanchez2021
Mass ratio (q=M2/M1) 0.05±0.02 MataSanchez2021
Inclination angle (i) [deg] 60 – 82 MataSanchez2021
Rot. broadening (v sini) [km/s] <110 (84% c.l.) MataSanchez2021

Optical/NIR magnitudes

Mag. Outburst (AB)
uvw1=17.23±0.04 g’=16.51±0.05 r’=16.50±0.05 i’=16.61±0.05
z’=16.65±0.05 J=16.52±0.05 H=16.59±0.05
Mag. Quiescent (AB)
r’=20.60±0.07 i’=20.21±0.08 z’=19.93±0.06
Aladin finding chart
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Default image: DSS2 Red
MAXI J1305-704 in Simbad

Finding charts

Orientation: North up, East left. Object marked
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Finding chart reference: MataSanchez2021

Finding chart

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.