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

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ID# 32

1RXH J173523.7-354013

1RXS J173524.4−353957, RX J1735.3−3540

Candidate UCXB

RA                 Dec     [hh:mm:ss.ss]          [dd:mm:ss.ss] 17:35:23.75  -35:40:16.1                      [ICRS]

ℓ                      b [deg]                            [deg] 353.144504  -01.741226

Year of discovery: 1990

(Voges1999)

Basic data

Location in Globular Cluster
Type of accretor	NS	Persistent
Distance [kpc] (other distances)	6.2(H), 9.5(He)	Degenaar2010b
z [kpc]	-0.29	Degenaar2010b
Orbital period (Porb) [min]
Porb determination method
Thermonuclear X-ray burst	IB	Degenaar2010b
Peak X-ray flux [erg s-1 cm-2] (2 - 10 keV)	2.30E-12	ArmasPadilla2013b
NH [x1022 cm-2]	1.4±0.1	ArmasPadilla2013b
E(B-V) [mag]
Magnitude	V=21.2	Degenaar2010b
Proposed companion

NOTES

In the optical spectra narrow Hα and Ca II emission lines are present, which are suggested to arise from de accretion disk or in the hemisphere of the secondary facing the neutron star due to X-ray resprocession (Degenaar2010b).

Spectral data

UV
Optical	Hα Ca II λ8498 and λ8542, O I λ8446 emission lines	Degenaar2010b
X-ray	Featureless	ArmasPadilla2013b

Peak Optical/NIR magnitudes

If the system is transient, quiescent magnitudes are indicated with a "q" superindex Degenaar2010b
V=21.2, R =18.8, J=15.4, H=14.3, K=13.8, R>17.5, B>23

Aladin finding chart

Scroll to zoom. Set survey image in "Manage layers"
Default image: DSS2 Red

1RXH J173523.7-354013 in Simbad

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References to finding charts

Degenaar2010b