Mass outflow from the X-ray binary X2127 + 119 in M15
نویسندگان
چکیده
منابع مشابه
Mass Outflow from the X-ray Binary X2127+119 in M15
The bright X-ray binary X2127+119 in the core of the globular cluster M15 has long been thought to be in an unusual evolutionary state, in which the binary is embedded in a common envelope. Support for this idea comes from X2127+119’s absorption lines, which are blue shifted at all orbital phases, indicating the existence of outflows from the system. A common-envelope scenario implies that the ...
متن کاملTime-resolved Spectroscopy of the M15 X-ray Binary AC211/X2127+119
We present time-resolved spectroscopy acquired during two epochs (spaced apart by ∼ 15 days) of the eclipsing Low Mass X-ray Binary AC211/X2127+119 in the globular cluster M15. The spectra show variations in the Heii λ4686 emission line not only modulated on the orbital period, but also on time-scales of a few days. During the first epoch of observation, the emission line shows a strong S-wave ...
متن کاملThe X-Ray Binary X2127+119 in M15: Evidence for a Very-Low-Mass, Stripped-Giant Companion
We present integral field spectroscopy of X2127+119, the luminous X-ray binary in the globular cluster M15, obtained with INTEGRAL/WYFFOS on the William Herschel Telescope. We find that tomograms of He II λ4686 line profiles appear to be incompatible with the previously-assumed view of X2127+119, in which the binary consists of a 1.4-M⊙ neutron star and a 0.8-M⊙ sub-giant companion near the mai...
متن کاملA Second Intense Burst with Photospheric Radius Expansion from X2127+119 in M15
In 2000 September we observed a bright X-ray burst from X2127+119 with the Rossi X-ray Timing Explorer. This burst has a multi-peaked profile, a peak luminosity of ∼6.5×10 erg s, a total integrated energy of ∼2×10 ergs, and significant photospheric radius expansion to a maximum extent of R=118±5 km. From the luminositytemperature relation during the expansion phase we derive estimates for the g...
متن کاملA new mass - ratio for the X - ray Binary X 2127 + 119 in M 15 ?
The luminous low-mass X-ray binary X2127+119 in the core of the globular cluster M15 (NGC 7078), which has an orbital period of 17 hours, has long been assumed to contain a donor star evolving off the main sequence, with a mass of 0.8 M⊙ (the main-sequence turn-off mass for M15). We present orbital-phase-resolved spectroscopy of X2127+119 in the Hα and He iλ6678 spectral region, obtained with t...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2002
ISSN: 0035-8711,1365-2966
DOI: 10.1046/j.1365-8711.2002.05833.x