A tentative 114-minute orbital period challenges the ultra-compact nature of the X-ray binary 4U 1812-12
arXiv:2205.04475 · doi:10.3847/2041-8213/ac6d54
Abstract
We present a detailed time-resolved photometric study of the ultra-compact X-ray binary candidate 4U 1812-12. The multicolor light curves obtained with HiPERCAM on the 10.4-m Gran Telescopio Canarias show an aprox 114 min modulation similar to a superhump. Under this interpretation, this period should lie very close to the orbital period of the system. Contrary to what its other observational properties suggest (namely, persistent dim luminosity, low optical-to-X-ray flux ratio and lack of hydrogen features in the optical spectrum), this implies that 4U1812-12 is most likely not an ultra-compact X-ray binary, which are usually defined as systems with orbital periods lower than 80 min. We discuss the nature of the system, showing that a scenario in which 4U 1812-12 is the progenitor of an ultra-compact X-ray binary may reconcile all the observables.
arXiv commentAccepted for publication in ApJ Letters
References in corpus (40)
- The disc instability model of dwarf-novae and low-mass X-ray binary transients
- Evolutionary Binary Sequences for Low- and Intermediate-Mass X-ray Binaries
- The distances to Galactic low-mass X-ray binaries: consequences for black hole luminosities and kicks
- Global optical/infrared - X-ray correlations in X-ray binaries: quantifying disc and jet contributions
- Superhumps in Cataclysmic Binaries. XXV. q_crit, epsilon(q), and Mass-Radius
- Mass Measurements of Stellar and Intermediate Mass Black-Holes
- Six new candidate ultracompact X-ray binaries
- The Multi-INstrument Burst ARchive (MINBAR)
- Revisiting a fundamental test of the disc instability model for X-ray binaries
- The chemical composition of donors in AM CVn stars and ultra-compact X-ray binaries: observational tests of their formation
- Models of Type I X-Ray Bursts in 4U 1820-30
- Stability of helium accretion discs in ultracompact binaries
- HiPERCAM: a quintuple-beam, high-speed optical imager on the 10.4-m Gran Telescopio Canarias
- The complete spectrum of the neutron star X-ray binary 4U0614+091
- The evolution of ultracompact X-ray binaries
- Superhumps in Low-Mass X-Ray Binaries
- Detection of superhumps in XTE J1118+480 approaching quiescence
- Evidence for quiescent synchrotron emission in the black hole X-ray transient Swift J1357.2-0933
- Swift J1753.5-0127: The Black Hole Candidate with the shortest orbital period
- Theoretical Considerations on the Properties of Accreting Millisecond Pulsars
- Furiously Fast and Red: Sub-second Optical Flaring in V404 Cyg during the 2015 Outburst Peak
- Correlated X-ray and Optical Variability in V404 Cyg in Quiescence
- Galactic Ultracompact X-ray Binaries: Disk Stability and Evolution
- Detection of negative superhumps in a LMXRB -- an end to the long debate on the nature of V1405 Aql (X1916-053)
- Multicolour observations of V404 Cyg with ULTRACAM
- Timing Analysis of the Light Curve of the Dipping-Bursting X-ray Binary X1916-053
- Hydrogen-Poor Disks in Compact X-Ray Binaries
- VLT spectroscopy and non-LTE modeling of the C/O-dominated accretion disks in two ultracompact X-ray binaries
- Two new candidate ultra-compact X-ray binaries
- Chandra Observations of the Faintest Low-Mass X-ray Binaries
- Formation of the planet around the millisecond pulsar J1719-1438
- Indications of non-conservative mass-transfer in AMXPs
- The complex evolution of the X-ray binary transient MAXI J1807+132 along the decay of its discovery outburst
- Simultaneous BeppoSAX and Rossi X-ray Timing Explorer observations of 4U1812-12
- Multiwavelength characterisation of the accreting millisecond X-ray pulsar and ultra-compact binary IGR J17062-6143
- INTEGRAL high energy behaviour of 4U 1812-12
- A Lack of Radio Emission from Neutron Star Low Mass X-ray Binaries
- Minimum Orbital Periods of H-Rich Bodies
- On the ultra-compact nature of the neutron star system 1RXS J170854.4-321857: insights from X-ray spectroscopy
- Optical spectroscopy of 4U 1812-12: an ultra-compact X-ray binary seen through an H II region