Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...414l..29c&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 414, no. 1, p. L29-L32.
Astronomy and Astrophysics
Astronomy
53
Emission Spectra, Stellar Envelopes, Stellar Evolution, Stellar Mass Ejection, Astronomical Maps, Infrared Astronomy, Stellar Winds
Scientific paper
High-resolution aperture synthesis maps of the (C-13)O, C(O-18) J = 1 - 0, and continuum emission at 2.7 mm from the Bok globule 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. Our images in the optically thick (C-13)O line show well-separated blue- and redshifted outflow lobes, and imply the presence of limb-brightened shells. The outflow opening angle close to its origin is the same as at distances of about 5 arcmin, suggesting that its morphology is determined primarily by a collimated driving wind. The high-density core is seen in both 2.7-mm continuum and (C-18)O maps, and has a mass of 0.2 solar mass. The (C-13)O and C(O-18) line profiles are consistent with those predicted by Zhou et al. (1993) for a collapsing core, and the continuum measurements also imply a density distribution typical of free-fall collapse.
Chandler Claire J.
Sargent Anneila I.
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