NASA NTRS · 19870029336
The black hole binary A0620-00
Abstract
CCD photometry obtained with the 1.3-m McGraw-Hill telescope during 1981-1985 and 490-560-nm spectra obtained at KPNO on Jan. 17, 1985, are reported for A0620-00. The mass of the compact X-ray source is found to have lower limit 3.20 solar mass, strongly implying that it is a black hole; its mass is shown to exceed 7.3 solar mass if the K dwarf fills its Roche lobe during quiescence.
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Mcclintock, J. E., Remillard, R. A.. 1986-09-01. The black hole binary A0620-00. https://ntrs.nasa.gov/citations/19870029336
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