UltraCompCAT A Catalogue of Ultra-Compact and Short Orbital Period X-ray Binaries

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ID# 42

SLX 1735-269

Candidate UCXB

RA                 Dec     [hh:mm:ss.ss]          [dd:mm:ss.ss] 17:38:17.12    -26:59:38.6                      [ICRS]

ℓ                      b [deg]                            [deg] 000.796121  02.400170

Year of discovery: 1985

(Skinner1987)

Basic data

Location in Globular Cluster
Type of accretor	NS	Persistent
Distance [kpc] (other distances)	4.5±0.7(H), 5.8±0.9(He)	Galloway2020 Galloway2008Chelovekov2011Chelovekov2017Molkov2005
z [kpc]	0.24	Galloway2020
Orbital period (Porb) [min]
Porb determination method
Thermonuclear X-ray burst	Short-B IB SB	Bazzano1997 Molkov2005 Suzuki2005
Peak X-ray flux [erg s-1 cm-2] (2 - 10 keV)	3.45E-10	Wilson2003
NH [x1022 cm-2]	1.70±0.05	Wilson2003
E(B-V) [mag]
Magnitude	R=21.31±0.12	Zolotukhin2011
Proposed companion

NOTES

Although the source is persistent, it showed an episode of enhanced activity in 2005 (IntZand2007).

Spectral data

UV
Optical
X-ray

Peak Optical/NIR magnitudes

If the system is transient, quiescent magnitudes are indicated with a "q" superindex Zolotukhin2011 Wilson2003
R=21.31±0.12, I=20.10±0.07, J > 19.4

Aladin finding chart

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SLX 1735-269 in Simbad

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Pan-STARRS1 finding chart

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References to finding charts

Zolotukhin2011