We have measured the rotational velocity of the companion star to be Ʊ rot sin i = 80 ± 10 km s ˗1 (1σ) by fitting Kurucz model spectra to our observed spectrum of the black-hole candidate GRO J1655–40. From this we have calculated q = 0·31 ± 0·08, the mass of the compact object to be M 1 = 7·91 ± 3·79 M ô (1σ) and for the companion star M 2 = 2·76 ± 1·79 M ô (1σ), which is consistent with previous studies. We have also determined T eff = 6500 ± 50 K and [Fe/H] = −0·15 +0·15 -0·10 .
No takes yet. Share an insight, caveat, or question.
Buxton et al. (2001) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: