J/A+A/315/578 CO Survey in Monoceros OB1 region (Oliver+ 1996)
A new CO Survey of the Monoceros OB1 region
Oliver R.J., Masheder M.R.W., Thaddeus P.
<Astron. Astrophys. 315, 578 (1996)>
=1996A&A...315..578O 1996A&A...315..578O (SIMBAD/NED BibCode)
ADC_Keywords: Interstellar medium
Keywords: ISM clouds - surveys, Galaxy: structure - radio lines: ISM -
ISM: molecules, ISM: bubbles
Abstract:
A new, fully sampled, sensitive CO survey of 52.5 square degrees
towards the Monoceros OB1 (Mon OB1) region has been completed using
the CfA 1.2 m millimeter-wave radio telescope. This survey extends
from b=-1.5° to b=+3.5° and from l=196.0° to l=206.5°
on a uniformly spaced grid of 3.75' in l and b, and has substantially
better sensitivity than previous surveys of the region. CO is detected
in 80% of the area, 60% of which is weak with integrated intensities
less than 5K.km/s. The large-scale kinematics are dominated by the
Perseus and Local spiral arms. Within the Local arm the molecular gas
appears to have been strongly influenced by supernova remnants and
expanding HII regions with the strongest emission at velocities
ranging from -17 to +10km/s, and a total mass of 1.3x105M☉.
Weak CO emission from Perseus arm clouds shows that they have a mean
kinematic distance of 3.5kpc and are comparable in size and mass to
local molecular clouds. The coincident positions of colour selected
IRAS point sources indicates that these distant clouds are undergoing
massive star formation.
Objects:
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RA (2000) DE Designation(s)
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06 30 49 +12 57.9 Mon OB1
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
appen.tex 77 331 LaTeX version of appendix
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Acknowledgements: R.J. Oliver
(End) Patricia Bauer [CDS] 02-May-1996