Bibcode
Shahbaz, T.; Linares, M.; Breton, R. P.
Bibliographical reference
Monthly Notices of the Royal Astronomical Society, Volume 472, Issue 4, p.4287-4296
Advertised on:
12
2017
Citations
23
Refereed citations
21
Description
Linares et al. obtained quasi-simultaneous g΄-,
r΄- and i΄-band light curves and an
absorption-line radial velocity curve of the secondary star in the
redback system 3FGL J0212.1+5320. The light curves showed two maxima and
minima primarily due to the secondary star's ellipsoidal modulation, but
with unequal maxima and minima. We fit these light curves and radial
velocities with our X-ray binary model including either a dark
solar-type star spot or a hotspot due to off-centre heating from an
intrabinary shock to account for the unequal maxima. Both models give a
radial velocity semi-amplitude and rotational broadening that agree with
the observations. The observed secondary star's effective temperature is
best matched with the value obtained using the hotspot model, which
gives a neutron star and secondary star mass of M1 = 1.85
^{+0.32}_{-0.26} M⊙ and M2 = 0.50
^{+0.22}_{-0.19} M⊙, respectively.
Related projects
![The illustration is inspired in the system V404 Cygni, and represents both the companion star and the accretion disc surrounding the black hole, as well as ejection processes in the form of a jet and wind. Black hole in outburst](/sites/default/files/styles/crop_square_2_2_to_320px/public/images/project/%C3%87Imagen%20TMD.jpg?h=25367c22&itok=0HYcf1S9)
Black holes, neutron stars, white dwarfs and their local environment
Accreting black-holes and neutron stars in X-ray binaries provide an ideal laboratory for exploring the physics of compact objects, yielding not only confirmation of the existence of stellar mass black holes via dynamical mass measurements, but also the best opportunity for probing high-gravity environments and the physics of accretion; the most
Montserrat
Armas Padilla