THE SMALL-SCALE STRUCTURE AND KINEMATICS OF B335

Citation
Cj. Chandler et Ai. Sargent, THE SMALL-SCALE STRUCTURE AND KINEMATICS OF B335, The Astrophysical journal, 414(1), 1993, pp. 120000029
Citations number
22
Categorie Soggetti
Astronomy & Astrophysics
Journal title
ISSN journal
0004637X
Volume
414
Issue
1
Year of publication
1993
Part
2
Database
ISI
SICI code
0004-637X(1993)414:1<120000029:TSSAKO>2.0.ZU;2-A
Abstract
High-resolution (2.''8-5'') aperture synthesis maps of the (CO)-C-13, (CO)-O-18 J = 1 --> 0, and continuum emission at 2.7 mm from the Bok g lobule B335 trace bipolar, high-velocity emission to within 250 AU of its source, and delineate a core which is elongated on scales of 1000 AU perpendicular to the outflow but unresolved along its minor axis. O ur images in the optically thick (CO)-C-13 line show well-separated bl ue- and redshifted outflow lobes, and imply the presence of limb-brigh tened shells. The outflow opening angle close to its origin is the sam e as at distances of approximately 5', suggesting that its morphology is determined primarily by a collimated driving wind. The high-density (>3 x 10(6) cm-3) core is seen in both 2.7 mm continuum and (CO)-O-18 maps, and has a mass of 0.2 M.. The (CO)-C-13 and (CO)-O-18 line prof iles are consistent with those predicted by Zhou et al. (1993) for a c ollapsing core, and the continuum measurements also imply a density di stribution typical of free-fall collapse.