Other
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21740902s&link_type=abstract
American Astronomical Society, AAS Meeting #217, #409.02; Bulletin of the American Astronomical Society, Vol. 43, 2011
Other
Scientific paper
The globular cluster RZ2109 located in NGC4472 was the first unambiguous identification of a black hole x-ray source in a globular cluster. Optical spectroscopy of RZ2109 display 3000 km s-1 [O III]λλ4959,5007 line along with the stellar spectra of the host globular cluster. Notably, the observed
spectrum lacks measurable emission from any other atomic species. In this talk we present a multi-facility study of the low to moderate resolution (R 400-2400) optical spectra of RZ2109 with observations spanning 467 days. We focus on the [O III]λ5007 line velocity profile and variability along with the lower limit on the [O III]λ5007/Hβ ratio. We then consider possible models for the nature and geometry of emission line region. Finally we describe the ongoing search for additional broad emission line systems in x-ray binary hosting globular clusters.
MMS and SEZ wish to acknowledge support from NSF grants AST-0406891 and AST-0807557.
Kundu Anjan
Maccarone Thomas J.
Rhode Katherine L.
Salzer John Joseph
Steele Matthew M.
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