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

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ID# 21

HETE J1900.1–2455

Short period LMXB

RA                 Dec    

[hh:mm:ss.ss]          [dd:mm:ss.ss]

19:00:09.77  -24:54:04

                     [ICRS]

ℓ                      b

[deg]                            [deg]

011.324799  -12.868715

Year of discovery: 2005

(Vanderspek2005)

Basic data
Location in Globular Cluster
Type of accretor NS
AMXP (377.29 Hz / 2.65 ms) 		Transient (Long outburst)
Kaaret2006
Distance [kpc]
(other distances)
 Gaia [kpc] 		2.9±0.1(H), 3.8(He)

3.5+1.7-3.5 		Galloway2020
Suzuki2007Galloway2008
Arnason2021
z [kpc] -0.85 Galloway2020
Orbital period (Porb) [min] 83.2543±0.001 Kaaret2006
Porb determination method X-ray pulsation
Thermonuclear X-ray burst Short-B Vanderspek2005Suzuki2007Papitto2013Galloway2020
Peak X-ray flux [erg s-1 cm-2]
(2 - 10 keV)		 3.92E-10 Papitto2013
NH [x1022 cm-2] 0.105 Papitto2013
E(B-V) [mag]
Magnitude V=18.09±0.03 Steeghs2005b
Proposed companion


NOTES
The source showed intermittent pulsations, detected only sporadically after 2 months of its outburst (e.g., Patruno2012).
Elebert2007 measured a modulation in the R-band light curves that might be due to superhumps.
The source was detected at a net count rate of (2.36 ± 0.03)E-3 count/s during quiescence in 2016 April (Degenaar2017).
QPOs with a single peak at 883 Hz (Kaaret2006) and burst oscillation at ~376 Hz (Watts2009).

Spectral data
UV
Optical Hα, He II λ4686, Bowen blend of N III and C III
Broad He II λ4686 emission line (the spectrum is contaminated by a nearby field star, limiting the detection of Balmer emission components. However, such Balmer emission is at most very weak).		 Elebert2007

 Steeghs2005b
X-ray Fe Kα (~6.6 keV), excess at ~1 keV (Fe-Lα and/or Ne-Kα) Papitto2013

Peak Optical/NIR magnitudes
If the system is transient, quiescent magnitudes are indicated with a "q" superindex
Elebert2007 Fox2005 Steeghs2005b Steeghs2005
R=17.91±0.05,V=18.00±0.04, B=17.92±0.04, R~18.4, V=18.09±0.03, R=18.02±0.03, I=17.88±0.02, J=17.6±0.2
Aladin finding chart
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HETE J1900.1–2455 in Simbad

Pan-STARRS1 finding chart

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PS1 Finding chart PS1 Finding chart

References to finding charts

Elebert2007


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: 09 May 2023.