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The unusual morphology of the high-velocity gas in L723 - One outflow or two?

Avery, L. W.; Hayashi, S. S. and White, Glenn J. (1990). The unusual morphology of the high-velocity gas in L723 - One outflow or two? The Astrophysical Journal, 357 pp. 524–530.

URL: http://articles.adsabs.harvard.edu/cgi-bin/nph-iar...
DOI (Digital Object Identifier) Link: http://dx.doi.org/10.1086/168939
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Abstract

The molecular outflow in L723 in the CO $J$ = 2-1 line was mapped. The unusual morphology of the flow which has been revealed in earlier CO $J$ = 1-0 maps is very marked in the present data. The present maps of the emission integrated over the entire line wings reveal a striking quadrupolar morphology. It has been suggested that this structure could be due to two separate outflow sources which are virtually coincident or to a single, nonsteady source which is precessing. However, in the maps made of the more optically thin emission arising from only the higher velocity intervals in the line wings, the quadrupolar structure transforms into two continuous, roughly semicircular arcs, one on each side of the IRAS source 1915 + 1907. These arcs are interpreted to be the limb-brightened walls of evacuated cavities swept clear by a wind from the IRAS source. Consequently, it appears that L723 contains a single, rather conventional bipolar outflow with an axis oriented from northeast to southwest.

Item Type: Journal Article
Copyright Holders: 1990 the American Astronomical Society
ISSN: 1538-4357
Keywords: carbon monoxide; flow velocity; interstellar gas; molecular gases; morphology; stellar coronas; far infrared radiation; infrared astronomy satellite; infrared sources (astronomy); molecular clouds; red shift
Academic Unit/Department: Science > Physical Sciences
Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
Item ID: 31830
Depositing User: Glenn White
Date Deposited: 10 Feb 2012 10:55
Last Modified: 28 Jan 2014 10:43
URI: http://oro.open.ac.uk/id/eprint/31830
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