A new correlation for Be/X-ray binaries: the orbital period-Hα equivalent width diagram
نویسندگان
چکیده
A correlation between the orbital period and the strength of the Hα line in Be/X-ray binaries has been found. Those systems with shorter orbital periods show less emission in Hα than those with longer orbital periods. The neutron star appears to act as a barrier which prevents the formation of a extended disk in systems with short orbital period.
منابع مشابه
Orbital period–Hα correlation in Be star/X-ray binaries?
Reig, Fabregat & Coe (1997) plotted the equivalent width of Hα emission against the orbital period for several Be star/X-ray binary systems, and find a correlation. If instead of the equivalent width, which is a relative quantity, the luminosity of Hα emission, which is an absolute quantity, is used the correlation is not found.
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