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

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ID# 20

GRS 1716-249

N Oph 1993 = V2293 Oph

(Mirabel1993)

RA     (ICRS)     DEC

[hh:mm:ss.ss]          [dd:mm:ss.ss]

17:19:36.93  -25:01:03.43

ℓ                      b

[deg]                            [deg]

000.1422746  06.99086431

Year of discovery: 1993  
(Ballet1993Harmon1993a)

# of outbursts after discovery: 2


Basic data
Distance [kpc] 2.4±0.4
7±1 		dellaValle1994

Saikia2022Casares2023
Distance to the plane (z) [kpc] 0.29±0.05
0.9±0.1 		dellaValle1994

Saikia2022Casares2023
Orbital period (Porb) [h] 6.7±0.2 Casares2023
Peak X-ray flux [erg s-1 cm-2]
[keV]		 1.97E-08
[2-10]		 Revnivtsev1998a
Outburst magnitude (AB) V∼16.6 dellaValle1994
Quiescent magnitude (AB) i’=21.39±0.05 dellaValle1994Casares2023Saikia2022
E(B-V) [mag] 0.9 dellaValle1994

Strictly speaking it is not a dynamical BH but there is either a robust mass function or mass determination suggesting the presence of a BH


NOTES
N Oph 1993 is too faint (r=23.2±0.1; Casares2023) to perform a dynamical study with current instrumentation. However, Casares2023 derived the dynamical parameters below using the FWHM (Hα) - K2 relation (Casares2015) using time-resolved spectroscopy.
It had another outburst on December 2016 (Negoro2016a)

Dynamical parameters
Orbital period [h] 6.7±0.2 Casares2023
Star's spectral type M0-5V
~ K6		 Chaty2002a

Casares2023
Star's radial velocity amplitude (K2) [km/s] 521±52 Casares2023
Mass function 'f(M1)' [M☉] 4±1 Casares2023
BH mass (M1) [M☉] 6.4+3.2-2.0 Casares2023
Mass ratio (q=M2/M1) ≤0.25 Casares2023
Inclination angle (i) [deg] 61±15 Casares2023



Optical/NIR magnitudes
Mag. Outburst (AB)
dellaValle1994
V∼16.6
Mag. Quiescent (AB)
dellaValle1994Casares2023Saikia2022
B≥21.3 V≥21.0 R≥20.06
r=23.2±0.1 i’=21.39±0.05
Aladin finding chart
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Default image: DSS2 Red
GRS 1716-249 in Simbad

Pan-STARRS1 finding chart

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PS1 Finding chart PS1 Finding chart

Finding charts

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Finding chart
Finding chart
Finding chart
Finding chart

Comparison stars (AB mag)

Masetti1996
BA=17.80 VA=16.24 RA=15.06
BB=17.48 VB=15.72 RB=14.66
BC=15.48 VC=13.82 RC=12.76
BD=16.99 VD=15.92 RD=15.26
BE=15.07 VE=13.86 RE=13.06


This research has made use of NASA's Astrophysics Data System (ADS), the SIMBAD database operated at CDS (Strasbourg, France) and APLpy
Please acknowledge the use of this catalogue in any published work you derive from it.
Last modified: 25 March 2024.