Probing outflows from young stars and brown dwarfs
Citation:
Emma Teresa Whelan, 'Probing outflows from young stars and brown dwarfs', [thesis], Trinity College (Dublin, Ireland). School of Physics, 2005, pp 239Download Item:
Abstract:
The phenomenon of mass outflow from young stellar objects, is arguably the
most spectacular stage in the formation of a star. Much is known about the large
scale manifestations of outflows and many breathtaking images attest to the energetic
nature of their interactions with their parent molecular clouds. However, in
comparison to what is known on the large-scale, the mysteries of the central engines
of young stars from which the outflows are launched, are little understood. A lot
of the knowledge concerning protostellar jets close to their point of origin (the jet
launch region) comes from the study of the forbidden emission lines (FELs) of one
group of protostars in particular, the low mass optically visible Classical T Tauri
stars. Traditionally probing the region of the central engine has proved difficult.
Direct imaging for example is challenging due to contamination by stellar radiation.
Intermediate resolution spectroscopy helps to overcome this problem however the
spatial resolutions achievable are not satisfactory. If a true understanding of the
central engine is to be attained information must be recovered on the smallest scales
possible.
Author: Whelan, Emma Teresa
Advisor:
Ray, TomPublisher:
Trinity College (Dublin, Ireland). School of PhysicsNote:
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Full text availableKeywords:
Physics, Ph.D., Ph.D. Trinity College DublinMetadata
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