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

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ID# 11

XTE J1751-305

Confirmed UCXB

RA                 Dec     [hh:mm:ss.ss]          [dd:mm:ss.ss] 17:51:13.49  -30:37:23.4                      [ICRS]

ℓ                      b [deg]                            [deg] 359.181912  -01.912008

Year of discovery: 2002

(Markwardt2002)

Basic data

Location in Globular Cluster
Type of accretor	NS AMXP (435.32 Hz / 2.30 ms)	Transient Markwardt2002
Distance [kpc] (other distances)	assumed 8.5	Gierlinski2005 Markwardt2002Papitto2008
z [kpc]	-0.28	Gierlinski2005
Orbital period (Porb) [min]	42.42235±0.00006	Markwardt2002
Porb determination method	X-ray pulsation
Thermonuclear X-ray burst
Peak X-ray flux [erg s-1 cm-2] (2 - 10 keV)	1.27E-09	Gierlinski2005
NH [x1022 cm-2]	1.000+0.023-0.011	Gierlinski2005
E(B-V) [mag]
Magnitude	R>23.1	Jonker2003b
Proposed companion	(warm helium dwarf) ( companion mass vs radius plane)	-- Markwardt2002

NOTES

The source was not detected in quiescence with a 3σ upper limit on the count rate of 1.2E-4 counts/s (0.5-7 keV; Wijnands2005). Combining the timing solution for the 2002 and 2009 outbursts Riggio2011 found the orbital period derivative to be in the interval from -2.7E-11 to 0.7E-11 s/s (1σ).

Spectral data

UV
Optical
X-ray	Featureless	Miller2003

Peak Optical/NIR magnitudes

If the system is transient, quiescent magnitudes are indicated with a "q" superindex Jonker2003b
R>23.1, I>21.6, Z>20.6, J>19.6, K>19.2

Aladin finding chart

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XTE J1751-305 in Simbad

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Pan-STARRS1 finding chart

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References to finding charts

Jonker2003b