Diffraction-Limited Infrared Imaging Spectroscopy of Outflows from Young Stars

Details Diffraction-Limited Infrared Imaging Spectroscopy of Outflows from Young Stars Diffraction-Limited Infrared Imaging Spectroscopy of Outflows from Young Stars

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...21115402p&link_type=abstract

American Astronomical Society, AAS Meeting #211, #154.02; Bulletin of the American Astronomical Society, Vol. 39, p.1006

Physics

Optics

Scientific paper

We present the inital results of an ongoing program to study stellar outflows using the OSIRIS integral field spectrograph and adaptive optics at Keck Observatory. Bipolar jets from young stars play crucial roles in angular momentum transfer away from protoplanetary disks and the excitation of molecular cloud turbulence, but their underlying physical mechanism remains uncertain. High angular resolution observations near jets' origins, now obtainable using integral field spectroscopy and adaptive optics, allow us to measure their structure and kinematics in detail, providing information on velocities, collimation, proper motion, and physical conditions within these jets. Our multi-epoch Keck LGSAO OSIRIS plus Gemini GMOS observations of the jet from the Herbig Ae star LkHa 233 now provide the most detailed picture yet of an outflow from an intermediate-mass star. We also present data on outflows from several additional sources, including T Tauri stars, the FU Ori star Parsamian 21 and the enigmatic BP Psc.
This work was supported by the Center for Adaptive Optics, an NSF Science and Technology Center, and the NSF Astronomy & Astrophysics Postdoctoral Fellowship Program.

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