Dynamical Evidence for a Black Hole in the Eclipsing X-ray Binary M33 X-7

Details Dynamical Evidence for a Black Hole in the Eclipsing X-ray Binary M33 X-7 Dynamical Evidence for a Black Hole in the Eclipsing X-ray Binary M33 X-7

Jan 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007atel..977....1o&link_type=abstract

The Astronomer's Telegram, #977

Astronomy and Astrophysics

Astronomy

1

Optical, Black Holes

Scientific paper

We have obtained optical spectroscopy of the counterpart to the eclipsing high-mass X-ray binary M33 X-7 (Pietsch et al 2004, 2006) using the GMOS instrument on the Gemini-North Telescope. We used the B1200 grating (lambda_c=4650 Angstroms) and a 0.5 arcsecond slit rotated to a position angle of 215.6 degrees (which is the angle defined by M33 X-7 and its neighbor star 0.9 arcseconds to the southwest).

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