000002541 001__ 2541
000002541 005__ 20160701171707.0
000002541 037__ $$aASTROimport-698
000002541 100__ $$aFrémat, Y.
000002541 245__ $$aHigh resolution spectroscopy of the triple system 20 Leo
000002541 260__ $$c2004
000002541 520__ $$a20 Leo is a spectroscopic triple system composed of 3 very similar stars, one of which seems to be a δ Sct star.  Observations at high spectral and high time resolution have been obtained at the Observatorie de Haute Provence with the ELODIE spectrograph on the 1.9-m telescope.  The spectra were taken during 7 nights in 2003 January and cover the whole optical domain from 3900 to 6800 Å.  We used a Fourier transform technique recently developed by P. Hadrava to disentangle the combined spectrum.  Application of the method allows the derivation of radial velocities at all orbital phases (even at phases of complete blending), as well as individual spectra for each component. From these computations we deduced more accurate individual radial velocities and improved orbital parameters describing the motion of the inner binary.  Model atmospheres were used to analyze each individual spectrum and determine stellar fundamental parameters of the three components such as effective temperature, surface gravity and projected rotation velocity. 
000002541 700__ $$a Lampens, P.
000002541 700__ $$a Hensberge, H.
000002541 700__ $$a Arentoft, T.
000002541 700__ $$a De Cat, P.
000002541 700__ $$a Garrido, R.
000002541 700__ $$a Parrao, L.
000002541 700__ $$a Peña, J. H.
000002541 700__ $$a Mathias, P.
000002541 700__ $$a van Cauteren, P.
000002541 773__ $$c395$$pIAU Colloq. 193: Variable Stars in the Local Group$$v310$$y2004
000002541 85642 $$ahttp://esoads.eso.org/abs/2004ASPC..310..395F
000002541 905__ $$apublished in
000002541 980__ $$aNONREF