Chin-Fei Lee et al. 2006 ApJ 639 292 doi:10.1086/499297
Chin-Fei Lee1, Paul T. P. Ho2, Henrik Beuther2, Tyler L. Bourke2, Qizhou Zhang2, Naomi Hirano3 and Hsien Shang3
Show affiliationsHH 212 is a highly collimated jet discovered in H2 powered by a young Class 0 source, IRAS 05413-0104, in the L1630 cloud of Orion. We have mapped around it in 1.33 mm continuum, 12CO (J = 2-1), 13CO (J = 2-1), C18O (J = 2-1), and SO (NJ = 56-45) emission at ~2
5 resolution with the Submillimeter Array. A dust core is seen in the continuum around the source. A flattened envelope is seen in C18O around the source in the equator perpendicular to the jet axis, with its inner part seen in 13CO. The structure and kinematics of the envelope can be roughly reproduced by a simple edge-on disk model with both infall and rotation. In this model, the density of the disk is assumed to have a power-law index of p = -1.5 or -2, as found in other low-mass envelopes. The envelope seems dynamically infalling toward the source with slow rotation because the kinematics is found to be roughly consistent with a free fall toward the source plus a rotation of a constant specific angular momentum. A 12CO outflow is seen surrounding the H2 jet, with a narrow waist around the source. Jetlike structures are also seen in 12CO near the source aligned with the H2 jet at high velocities. The morphological relationship between the H2 jet and the 12CO outflow, and the kinematics of the 12CO outflow along the jet axis, are both consistent with those seen in a jet-driven bow shock model. SO emission is seen around the source and the H2 knotty shocks in the south, tracing shocked emission around them.
ISM: individual (HH 212); ISM: jets and outflows; stars: formation
Issue 1 (2006 March 1)
Received 2005 September 12, accepted for publication 2005 November 1
Chin-Fei Lee et al. 2006 ApJ 639 292
A. I. MacFadyen and S. E. Woosley 1999 ApJ 524 262
M J van de Sande and J J A M van der Mullen 2002 J. Phys. D: Appl. Phys. 35 1381
Sigbjørn Hervik 2003 Class. Quantum Grav. 20 4315
J Weichsel et al 2008 Phys. Med. Biol. 53 4383
Murthy S. Gudipati and Louis J. Allamandola 2006 ApJ 638 286
Yun Song et al 2000 J. Phys.: Condens. Matter 12 5275
Martin Sieber 2002 J. Phys. A: Math. Gen. 35 L613
H Lei et al 2002 J. Phys.: Condens. Matter 14 7963
James M Nester 2007 J. Phys. A: Math. Theor. 40 2751