Disk and wind interaction in the young stellar object MWC 297 spatially resolved with AMBER/VLTI

摘要: The young stellar object MWC 297 is an embedded B1.5Ve star exhibiting strong hydrogen emission lines and a near-infrared continuum excess. This has been observed with the VLT interferometer equipped AMBER instrument during its first commissioning run. VLTI/AMBER currently only near infrared which can observe spectrally dispersed visibilities. spatially resolved in visibility of $0.50^{+0.08}_{-0.10}$ as well Brgamma line where decrease to lower value $0.33\pm0.06$. change wavelength be interpreted by presence optically thick disk responsible for wind traced whose apparent size 40% larger. We validate this interpretation building model environment that combines geometrically thin, accretion consisting gas dust, latitude-dependent outflowing above surface. visibilities obtained from are fully consistent interferometric data. They agree also existing optical, spectra other broad-band reproduce shape profile at higher spectral resolution VLT/ISAAC spectrograph, those Halpha Hbeta lines. models yield inclination system approximately 20 degrees. A picture emerges surrounded equatorial flat possibly still accreting much velocity polar region than equator. unique capability measure therefore allows us time compare geometry structure system.