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

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ID# 53

MAXI J1305-704

(Coriat2012)

RA     (ICRS)     DEC [hh:mm:ss.ss]          [dd:mm:ss.ss] 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 9.74±0.04	MataSanchez2021Shidatsu2013
Peak X-ray flux [erg s-1 cm-2] [keV]	1.03E-09 [2-10]	Morihana2013
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

NOTES

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 9.74±0.04	MataSanchez2021Shidatsu2013
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) Greiner2012
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) MataSanchez2021
		g’=21.78±0.10
r’=20.60±0.07		i’=20.21±0.08	z’=19.93±0.06

Aladin finding chart

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MAXI J1305-704 in Simbad

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Finding charts

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