Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...292..631f&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 292, no. 2, p. 631-640
Astronomy and Astrophysics
Astrophysics
22
Jet Flow, Molecular Clouds, Particle Acceleration, Velocity Distribution, Astronomical Photometry, Charge Coupled Devices, H Alpha Line, Image Processing, Imagery, Reflecting Telescopes, Sulfur
Scientific paper
High spatial resolution imaging observations of the L 1551 IRS 5 jet have been performed. The system has continued to evolve since it was observed by Neckel & Staude (1987). The tangential velocities of individual features within the jet suggest the presence of three different velocity systems. These velocities have all been constant over the past ten years of observation, although there is some indication that one of the components has recently been re-accelerated. The geometry suggested by the observational evidence is that of a conical volume, which is inclined towards the observer by some 30 deg. The jet knots appear to run along narrower channels near the surface of the cone. The flow times of the individual knots exhibit a regular pattern, which indicates precession of the jet and/or ejection of the knots with periods of about 20 years. The force required to accelerate the observable knot material to the inferred space velocities is of the order of 10-6(solar masses)(km)/(s)(yr), which is very much smaller than the average momentum transfer rate to the molecular material in the immediate surroundings of the jet.
Liseau Rene
Malcolm Fridlund C. V.
No associations
LandOfFree
The velocity field of the L 1551 IRS 5 jet 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 The velocity field of the L 1551 IRS 5 jet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The velocity field of the L 1551 IRS 5 jet will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1317881