Wednesday, 8th November 2006 at 3.30pm @ the JAC
Dave Lommen
Leiden Observatory, the Netherlands
"Studying the disks in young stellar objects with mm interferometry"
ABSTRACT: Disks of dust and gas are observed around many low-mass
young stars. Interferometry is indispensable in the study of these
young stellar objects (YSOs). In the earliest stages of a YSO's life,
the emission of the star/disk system is overwhelmed by that of the
surrounding envelope, and interferometry is needed to filter out the
large-scale structure and zoom in on the disk. In later stages
the envelope will have dispersed, but we need interferometry to
resolve the disks and constrain the physical models we have of these
systems. In this presentation I will discuss the results of a study of
southern T Tauri stars ("Class II objects") that were observed at 1 mm
with the SubMillimetre Array (SMA) and at 3 mm with the Australia
Telescope Compact Array (ATCA). I will furthermore present preliminary
results from SMA observations of two "Class I" sources, carried out in
May of this year.
Related paper:
Lomen et al., 2006,
"Investigating grain growth in disks around southern T Tauri stars at
millimetre wavelengths,"
(astro-ph/0610667)
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