Dynamical Evidence for a Black Hole in the Microquasar XTE J1550-564

Details Dynamical Evidence for a Black Hole in the Microquasar XTE J1550-564 Dynamical Evidence for a Black Hole in the Microquasar XTE J1550-564

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001atel...70....1o&link_type=abstract

The Astronomer's Telegram, #70

Astronomy and Astrophysics

Astronomy

6

Optical, Binaries, Black Holes, Transients

Scientific paper

We obtained direct CCD images and time series spectroscopy of the microquasar XTE J1550-564 on May 24-27, 2001 using the FORS1 instrument on Antu, which is the first 8.2 meter telescope at the European Southern Observatory, Paranal (visitor program 67.D-0229(A)). We obtained a total of 18 spectra covering a wavelength range of 4571 to 6927 Angstroms with a resolution of 3.6 Angstroms FWHM. The spectra show a broad, double-peaked H alpha emission line with an equivalent width of ~23 Angstroms and a peak-to-peak separation of 800 km/s.

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