Proper Motions and Kinematics of Giant HH Flows in Cepheus and Perseus

Details Proper Motions and Kinematics of Giant HH Flows in Cepheus and Perseus Proper Motions and Kinematics of Giant HH Flows in Cepheus and Perseus

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.6204d&link_type=abstract

American Astronomical Society, AAS Meeting #211, #62.04; Bulletin of the American Astronomical Society, Vol. 39, p.848

Astronomy and Astrophysics

Astronomy

Scientific paper

Over two dozen giant Herbig-Haro (HH) flows were discovered in deep, narrow-band images of star forming regions obtained by the PI and his collaborators from 1993-1997. Radial velocities for several of these parsec-scale outflows were also obtained during that period; however, the kinematics of the majority of these flows remained uncertain due to the lack of information about their proper motions. We now present second epoch images for several of these outflows located in the Cepheus and Perseus star forming regions. The proper motions of the HH objects in these flows are used to infer the ejection history of the associated proto-stars over periods of order 100 to 10,000 years, and the resulting outflow kinematics are compared with theoretical models of proto-stellar outflows. The energy and momentum of these flows is estimated based on standard mass loss rates for pre-main sequence stars. The impact of these flows on the host cloud and the role of proto-stellar outflows in generating the large scale turbulence observed in molecular clouds is quantified. We also discuss correlations between outflow kinematics and the luminosity and evolutionary status of the proto-stellar sources, and estimate the frequency and evolution of star formation throughout select regions of the Perseus molecular cloud. These observations were obtained at the Kitt Peak National Observatory, National Optical Astronomy Observatory, which is operated by the Association of Universities for Research in Astronomy, Inc. (AURA) under cooperative agreement with the National Science Foundation.

Affiliated with

Also associated with

No associations

Rating

Proper Motions and Kinematics of Giant HH Flows in Cepheus and Perseus does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Proper Motions and Kinematics of Giant HH Flows in Cepheus and Perseus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Proper Motions and Kinematics of Giant HH Flows in Cepheus and Perseus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1478252