Kinematics and Evolution of the Giant HH34 Complex

Details Kinematics and Evolution of the Giant HH34 Complex Kinematics and Evolution of the Giant HH34 Complex

Nov 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aj....114.2095d&link_type=abstract

Astronomical Journal v.114, p.2095

Astronomy and Astrophysics

Astronomy

80

Stars: Pre-Main Sequence, Ism: Individual: Hh34, Ism: Kinematics And Dynamics, Ism: Jets And Outflows

Scientific paper

We present morphological and kinematic evidence that the HH34 protostellar outflow extends symmetrically about the HH34 source for roughly 1.5 parsecs, and has a total length of at least 3 parsecs. The northern components of the flow (HH34N, HH126, HH85, HH33, and HH40) are all redshifted, while the southern components (HH34, HH34X, HH173, HH86, HH87, and HH88) are all blueshifted. The northern and southern components are symmetrically placed relative to the driving source HH34 IRS, and their radial velocities are symmetric relative to the radial velocity of the cloud core containing HH34 IRS. The magnitude of the radial velocity tends to decrease with increasing distance from HH34 IRS. Proper motions of some of the components (HH33, HH4O, HH85A, HH86A, HH86B, HH87, and HH88) were also determined and are consistent with the single flow hypothesis; the proper motions of knots north of the HH34 source are directed to the northwest, while those to the south are directed to the southeast. The proper motions also tend to decrease with increasing distance from the HH34 source. The dynamic age of the flow is at least 104 years. We propose that the parsec-scale chain of Herbig-Haro objects in the HH34 system is powered by a time variable, quasi-episodic jet and discuss the expected behavior of the resulting shock structures over the lifetime of the flow.

Affiliated with

Also associated with

No associations

Rating

Kinematics and Evolution of the Giant HH34 Complex 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 Kinematics and Evolution of the Giant HH34 Complex, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Kinematics and Evolution of the Giant HH34 Complex will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1684729