The Serpens radio jet: Evidence of precession of nutation

Details The Serpens radio jet: Evidence of precession of nutation The Serpens radio jet: Evidence of precession of nutation

Jun 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994ap%26ss.216..137c&link_type=abstract

Astrophysics and Space Science, vol. 216, no. 1-2, p. 137-138

Astronomy and Astrophysics

Astronomy

4

Continuums, Nutation, Radio Astronomy, Radio Jets (Astronomy), Star Formation, Very Large Array (Vla)

Scientific paper

Previous very large array (VLA) observations of the triple radio continuum source in Serpens showed that it has very unusual and extraordinary characteristics. While this source is associated with a star forming region, its outer components exhibit a combination of thermal and nonthermal spectra and large proper motions, Furthermore, the NW lobe has knotty and extended emission connecting the central source with the bright outer knot. Here, we present results of new VLA radio continuum high-angular resolution observations of this Radio Jet. Combining these observations with those obtained previously, we find that: (a) one of the knots along the main body of the radio jet (knot G) exhibits proper motions similar to those observed in the outer NW and SE components, and the time variable knot A; (b) the outer knots are moving away from the central source in slightly different directions; and (c) the orientation of the central source seems to change with time. These results are consistent with a central precessing source that undergoes periodic ejection of material.

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