Bibcode
Casares, J.; Torres, M. A. P.
Referencia bibliográfica
Monthly Notices of the Royal Astronomical Society, Volume 481, Issue 4, p.4372-4380
Fecha de publicación:
12
2018
Número de citas
9
Número de citas referidas
9
Descripción
We investigate the feasibility of detecting quiescent black hole X-ray
binaries using optical photometric techniques. To test this, we employ a
combination of r-band and H α filters currently available at the
Roque de los Muchachos Observatory. Photometric observations of four
dynamical black holes (GRO J0422+320, A 0620-00, XTE J1118+480, and XTE
J1859+226) at SNR ≳ 35-50, supplemented with near simultaneous
spectroscopic data, demonstrate that it is possible to recover the full
width at half-maximum of the H α emission line to better than 10
per cent for targets with a wide range of line equivalent widths and
down to magnitude r ˜ 22. We further explore the potential of our
photometric system to disentangle other populations of compact stars and
H α emitters. In particular, we show that HAWKs, a survey designed
to unveil quiescent black holes, will also provide a detailed census of
other Galactic populations, most notably short period (eclipsing)
cataclysmic variables, neutron star X-ray binaries, and ultracompact
binaries.
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