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Issue A&A
Volume 430, Number 2, February I 2005
Page(s) 523 - 539
Section Interstellar and circumstellar matter
DOI http://dx.doi.org/10.1051/0004-6361:20035943



A&A 430, 523-539 (2005)
DOI: 10.1051/0004-6361:20035943

A uniform CO survey of the molecular clouds in Orion and Monoceros

B. A. Wilson1, 2, T. M. Dame2, M. R. W. Masheder1 and P. Thaddeus2

1  University of Bristol, Tyndall Avenue, Bristol, UK
2  Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
    e-mail: [awilson;tmdame]@cfa.harvard.edu

(Received 23 December 2003 / Accepted 30 August 2004)

Abstract
We report the results of a new large scale survey of the Orion-Monoceros complex of molecular clouds made in the $J = 1 \rightarrow 0$ line of with the Harvard-Smithsonian 1.2 m millimetre-wave telescope. The survey consists of 52 288 uniformly spaced spectra that cover an area of 432 deg 2 on the sky and represent the most sensitive large-scale survey of the region to date. Distances to the constituent molecular clouds of the complex, estimated from an analysis of foreground and background stars, have provided information on the three dimensional structure of the entire complex.


Key words: ISM: clouds -- ISM: structure -- ISM: kinematics and dynamics -- ISM: general

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© ESO 2005


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