The Bipolar Optical Outflow Associated with PV Cephei

Details The Bipolar Optical Outflow Associated with PV Cephei The Bipolar Optical Outflow Associated with PV Cephei

Jul 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aj....114..265g&link_type=abstract

Astronomical Journal v.114, p.265

Astronomy and Astrophysics

Astronomy

31

Ism: Jets And Outflows, Stars: Individual: Pv Cephei, Stars: Pre-Main Sequence

Scientific paper

We describe deep 10' X 19' CCD images of the bipolar [S II] jet emanating from the Herbig Ae/Be star PV Cephei. The 2.3 pc long jet exhibits a clear S-shaped morphology and lies within the lobes of the molecular outflow. The 23 HH knots-including 21 new detections-suggest an intermittent outflow with major eruptions every ˜2000 yr. We model the morphology of the optical outflow with a simple precessing jet; our preferred model has a large inclination to the line-of-sight, i˜80°; an opening angle for the precession axis, 0˜45°; and a modest precession period of ˜8300 yr. The close association of optical and radio outflows-together with our simple dynamical jet model-is consistent with Masson & Chernin's (1993, ApJ, 414, 230) picture where a precessing optical jet carves out cavities in an infalling envelope and drives a molecular outflow.

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