M17-SW datacubes in C and CO lines : J/A+A/575/A9

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Authors : Perez-Beaupuits J.P. orcid , Stutzki J., Ossenkopf V. (hide) , Stutzki J., Ossenkopf V. et..al

VizieR DOI : 10.26093/cds/vizier.35750009
Bibcode : 2015A&A...575A...9P (ADS) (Simbad) (Objects)
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CDS Keywords : Carbon monoxide; H II regions; Nebulae; Radio lines; Millimetric/submm sources; Molecular clouds; Spectroscopy
UAT : CO line emission, H II regions, Nebulae, Radio astronomy, Millimeter astronomy, Submillimeter astronomy, Molecular clouds, Spectroscopy

Observation (OC)

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Inserted into VizieR : 11-Feb-2015
Last modification : 28-Jul-2015

Detection of a large fraction of atomic gas not associated with star-forming material in M17 SW. (2015)

Keywords : ISM atoms - ISM: molecules - submillimeter: ISM - ISM: clouds

Abstract:We probe the column densities and masses traced by the ionized [CII] and neutral [CI] atomic carbon with spectrally resolved maps, and compare them to the diffuse and dense molecular gas traced by [CI] and low-J CO lines toward the star-forming region M17 SW. We mapped a 4.1pcx4.7pc region in the [CI] 609{mu}m line using the APEX telescope, as well as the CO isotopologues with the IRAM 30m telescope. Data are analyzed based on velocity channel maps that are 1km/s wide. We correlate their spatial distribution with that of the [CII] map obtained with SOFIA/GREAT. Optically thin approximations were used to estimate the column densities of [CI] and [CII] in each velocity channel. ...(more)
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Astronomy and Astrophysics policies
The FITS files contain the data cubes corresponding to the most relevant spectral lines used in our work: The ^12^CO(1-0), ^13^CO(1-0), C^18^O(2-1), [CI](1-0), [CI](2-1), [CII] and H41{alpha} lines, observed over a region of about 310"x120" towards the M17 SW nebula. They were obtained using the IRAM 30m telescope, the Atacama Pathfinder EXperiment (APEX) telescope, and the German REceiver for Astronomy at Terahertz frequencies (GREAT) on board the Stratospheric Observatory For Infrared Astronomy (SOFIA) with varying angular resolutions. They have all been convolved to a common angular resolution of 24", except for the H41{alpha} line which was convolved to an angular resolution of 30" to improve the S/N. The velocity resolution of all the data cubes is 1km/s.
Juan-Pablo Perez-Beaupuits, jp(at)mpifr.de, Max-Planck Institute for Radio Astronomy, Bonn, Germany

                


                

                    

                


                

                    

                


                

                    
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