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, DeirdreBacciotti, FrancescaChrysostomou, 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 velocityHigh angular resolutionDoppler gradientYoung sourceToroidal 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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