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

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ID# 16

4U 0614+091

V1055 Ori

Confirmed UCXB

RA                 Dec     [hh:mm:ss.ss]          [dd:mm:ss.ss] 06:17:07.35   +09:08:13.4                      [ICRS]

ℓ                      b [deg]                            [deg] 200.877357  -03.363284

Year of discovery: 1972

(Giacconi1972)

Basic data

Location in Globular Cluster
Type of accretor	NS	Persistent
Distance [kpc] (other distances) Gaia [kpc]	1.99±0.02(H), 2.59±0.03(He) 3.3+1.3-2.4	Galloway2020 Brandt1992Kuulkers2010 Arnason2021
z [kpc]	-0.15	Galloway2020
Orbital period (Porb) [min]	51.3	Shahbaz2008
Porb determination method	Optical modulation
Thermonuclear X-ray burst	Short-B IB SB	Lewin1976 Kuulkers2010 Kuulkers2005
Peak X-ray flux [erg s-1 cm-2] (2 - 10 keV)	1.77E-09	Lin2018
NH [x1022 cm-2]	0.3	Madej2010
E(B-V) [mag]
Magnitude	V = 18.87±0.08	Machin1990
Proposed companion	CO WD; ONe WD (Optical spectrum; X-ray spectral modelling)	Nelemans2004Juett2001Madej2010

NOTES

The value reported by Shahbaz2008, corresponding to the strongest periodicity found by the authors, is only suggested as the orbital period. However, Nelemans2006, Hakala2011 and Zhang2012, reassure this value by finding potential periodicities of 48.5, 50 and 48 min, respectively. Madej2013 estimated an orbital period of ~30 min through time-resolved optical spectroscopy. Table 4 in Baglio2014 lists radio and IR fluxes in different bands. Burst oscillations at a frequency of 414.7 Hz (Strohmayer2008).

Spectral data

UV	Featureless	Madej2013
Optical	CO emission lines N emission lines	Nelemans2004Madej2013Machin1990 Machin1990
X-ray	Ne (0.7 keV) O (0.7 keV) Fe K (6.6 keV)	Juett2001 Madej2010 Koliopanos2021

Peak Optical/NIR magnitudes

If the system is transient, quiescent magnitudes are indicated with a "q" superindex Russell2007a Wagner1993 Machin1990 Gottwald1991 Davidsen1974
J = 18.12, H = 17.5, K = 17.1, V = 20.0±0.7, K = 17.2±0.3, V = 18.87±0.08, V = 18.5, B = 18.8±0.2

Aladin finding chart

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Default image: DSS2 Red

4U 0614+091 in Simbad

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Pan-STARRS1 finding chart

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References to finding charts

Migliari2006Gottwald1991Davidsen1974