NOAO >   Observing Info >   Approved Programs >   2012B-0238

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Proposal Information for 2012B-0238


PI: Tracy Beck, Space Telescope Science Institute, tbeck@stsci.edu
Address: 3700 San Martin Drive, Baltimore, MD 21218, USA

CoI: Hiro Takami, ASIAA - Taiwan
CoI: Marc White, Australian National University
CoI: Mei-Yin Chou, ASIAA
CoI: Peter McGregor, Australian National University
CoI: Jennifer Karr, ASIAA

Title: Understanding the Jet Launching Mechanism in Young Star Outflows

Abstract: Understanding the mechanisms of mass accretion and ejection is one of the most important issues of star formation theories. Jets from young stars play a fundamental role in removing excess angular momentum from a disk, allowing mass accretion to occur. Therefore, understanding jets is important for understanding not only star formation, but also initial/ongoing conditions for planet formation in the inner regions of the disks. We propose for time with Gemini+NIFS to reveal the jet launching process by simultaneously studying the dynamic and evolving jet morphology as it relates to the recent accretion history onto the central star. Over the the past two years, optical spectral monitoring of several young stars has shown that we can well sample the large scale time variation of magnetospheric accretion and the inner jet/wind in very close proximity to the driving source. By combining these proposed NIFS and continuing CHFT optical spectral observations, we will be able to investigate time correlation between accretion onto the star and mass ejection in the jet, their physical link, and hence the driving mechanism of the jet.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2012B-0238

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