Astronomy and Astrophysics – Astrophysics
Scientific paper
2005-10-12
Astronomy and Astrophysics
Astrophysics
13 pages; to be published in A&A; Acceptance day: 11/10/2005
Scientific paper
10.1051/0004-6361:20053924
The young stellar object MWC 297 has been observed with the VLT interferometer equipped with the AMBER instrument. MWC 297 has been spatially resolved in the continuum with a visibility of 0.50 as well as in the Br gamma emission line where the visibility decrease to a lower value of 0.33. This change in the visibility with the wavelength can be interpreted by the presence of an optically thick disk responsible for the visibility in the continuum and of a stellar wind traced by Br gamma and whose apparent size is 40% larger. We validate this interpretation by building a model of the stellar environment that combines a geometrically thin, optically thick accretion disk model consisting of gas and dust, and a latitude-dependent stellar wind outflowing above the disk surface. The continuum emission and visibilities obtained from this model are fully consistent with the interferometric AMBER data. They agree also with existing optical, near-infrared spectra and other broad-band near-infrared interferometric visibilities. A picture emerges in which MWC 297 is surrounded by an equatorial flat disk that is possibly still accreting and an outflowing wind which has a much higher velocity in the polar region than at the equator. [abridged]
AMBER Collaboration
Benisty Myriam
Berger Jean Philippe
Chesneau Olivier
de Wit Willem-Jan
No associations
LandOfFree
Disk and wind interaction in the young stellar object MWC 297 spatially resolved with VLTI/AMBER does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Disk and wind interaction in the young stellar object MWC 297 spatially resolved with VLTI/AMBER, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Disk and wind interaction in the young stellar object MWC 297 spatially resolved with VLTI/AMBER will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-685435