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2.- Revised orbital solution in LS 5039• First γ-ray Binary detected by HESS at TeV with L γ =10 34 ergs/s• Spatially resolved radio emissionMicroquasar or pulsar wind?• Radial velocity curve of the 06.5V((f)) indicate P orb =3.906 d (Casares et al.2005). But the orbital parameters depend on the spectral lines used.HI and HeI may be contaminated by wind emissionbecause show larger scatter and the solution is blueshiftted(as expected by contamination from P-Cygni)We adopted the HeII solution
Optical star almost fills Roche lobe at periastronpseudo-synchronized1/ 2(1 e)1V sin i 2Rc Porbsin3/ 2(1 e)V sin i=113 km/sii = 23.2 -- 26.8 oThis result suggests that LS 5039 might be a black hole with 3-5 solar masses
Page 1 and 2: NEW OPTICAL RESULTSON γ-RAY BINARI
Page 3: 1.- Introduction• Only 3 galactic
Page 7 and 8: Not accounting for 1d perturbation
Page 9 and 10: Long-term variability in Hα lineWH

Curriculum Vitae

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