Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21341410b&link_type=abstract
American Astronomical Society, AAS Meeting #213, #414.10; Bulletin of the American Astronomical Society, Vol. 41, p.225
Astronomy and Astrophysics
Astronomy
1
Scientific paper
The majority of atomic Hydrogen Br gamma emission detected in the spectra of young stellar objects (YSOs) is believed to arise from within several stellar radii of the star in recombination regions associated with the magnetospheric accretion of circumstellar disk material. In this study, we present the results of our K-band integral field spectroscopic measurements of Br gamma emission in eight YSOs. We spatially resolve the Brg emission line structures in half of the young stars in our target sample. The emission extends to more than 100AU in two cases. The extended Brg emission is associated with the known Herbig-Haro energy flows from the stars or is scattered off of spatially resolved outflow cavities. At some velocities, the spatially extended emission comprises up to 20% of the Brg flux from the stars.
Bary Jeff
Beck Tracy L.
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