Searching for Jet Rotation Signatures in Class 0 and I Jets
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|Title:||Searching for Jet Rotation Signatures in Class 0 and I Jets||Other Titles:||Searching for Jet Rotation Signatures in Class 0 and I Jets - Strengthening the Observational Support for Magnetocentrifugal Ejection||Authors:||Coffey, Deirdre; Bacciotti, Francesca; Chrysostomou, A.; Nisini, B.; Davis, C.||Permanent link:||http://hdl.handle.net/10197/11162||Date:||6-Aug-2009||Online since:||2019-10-18T13:32:05Z||Abstract:||In recent years, there has been a number of detections of asymmetries in the radial velocity profile across jets from young stars. The significance of these results is considerable. They may be interpreted as a signature of jet rotation about its symmetry axis, thereby representing the only existing observational indications supporting the theory that jets extract angular momentum from star-disk systems. However, the possibility that we are indeed observing jet rotation in pre-main sequence systems is undergoing active debate. To test the validity of a rotation argument, we must extend the survey to a larger sample, including younger sources. We present the latest results of a radial velocity analysis on jets from Class 0 and I sources, using high resolution data from the infrared spectrograph GNIRS on GEMINI South. These observations demonstrate the difficulty of conducting this study from the ground, and highlight the necessity for high angular resolution via adaptive optics or space-based facilities.||Funding Details:||European Commission||Type of material:||Conference Publication||Publisher:||Springer||Series/Report no.:||Astrophysics and Space Science Proceedings book series (ASSSP)||Copyright (published version):||2009 Springer||Keywords:||Radial velocity; High angular resolution; Doppler gradient; Young source; Toroidal velocity||DOI:||10.1007/978-3-642-00576-3_29||Other versions:||http://conferences.phys.uoa.gr/jets2008/||Language:||en||Status of Item:||Peer reviewed||Is part of:||Tsinganos, K., Ray, T., Stute, M. Protostellar Jets in Context||Conference Details:||Protostellar Jets in Context, Rhodes, Greece, 7-12 July 2008||ISBN:||9783642005756|
|Appears in Collections:||Physics Research Collection|
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