Molecular line mapping of the giant molecular cloud associated with RCW 106 – I. 13CO
Identifieur interne : 009940 ( Main/Exploration ); précédent : 009939; suivant : 009941Molecular line mapping of the giant molecular cloud associated with RCW 106 – I. 13CO
Auteurs : I. Bains [Australie] ; T. Wong [Australie] ; M. Cunningham [Australie] ; P. Sparks [Australie] ; D. Brisbin [États-Unis] ; P. Calisse [Australie] ; J. T. Dempsey [Australie] ; G. Deragopian [Australie] ; S. Ellingsen [Australie] ; B. Fulton [Australie] ; F. Herpin [France] ; P. Jones [Australie] ; Y. Kouba [Australie] ; C. Kramer [Allemagne] ; E. F. Ladd [États-Unis] ; S. N. Longmore [Australie] ; J. Mcevoy [Australie] ; M. Maller [Australie] ; V. Minier [France] ; B. Mookerjea [Allemagne] ; C. Phillips [Australie] ; C. R. Purcell [Australie] ; A. Walsh [Australie] ; M. A. Voronkov [Australie, Russie] ; M. G. Burton [Australie]Source :
- Monthly Notices of the Royal Astronomical Society [ 0035-8711 ] ; 2006-04-21.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Niveau sonore, Chiffre d'affaires.
English descriptors
- KwdEn :
- Abundance ratio, Actual peak, Algorithm, Algorithms, Ambipolar diffusion, Arcmin, Arcsec, Australia telescope, Bains, Bandpass, Base contour level, Beam radius, Beam size, Believable clumps, Bottom right, Bourke, Brightest clumps, Brightest knots, Cell spacing, Cent level, Cent levels, Cent results, Centre, Centre position, Centre positions, Centred, Clump, Clump column densities, Clump mass, Clump masses, Clump number, Clump properties, Clump radius, Clump size, Clumpfind, Clumpfind algorithm, Clumpfind analysis, Clumps overlap, Column densities, Column density, Completeness limit, Continuum emission, Deg2 region, Density conditions, Different components, Discrete clumps, Distinct velocity features, Dust clump, Dust clumps, Dust data, Dust emission, Dust structure, Dust structures, Eld, Emission structure, Energy injection, Full bandpass, Full width, Future work, Galactic, Galactic centre, Galactic plane, Galactic rotation, Giant molecular cloud, Goss, Grid, HII regions, High mass, High mass star formation, Higher density tracers, Ira, Journal compilation, Karnik, Klessen, Kramer, LTE, Lower density, Main axis, Main beam brightness temperature, Mapping capability, Mapping manifolds, Mass distribution, Mass estimates, Mass ratio, Mass spectrum, Maximum change, Midcourse space experiment, Mmdust clump, Mnras, Molecular clouds, Molecular tracers, Moment image, Mookerjea, Mopra, Mopra antenna, Mopra beam size, Mopra data, Mopra observations, Mopra telescope, More details, Noise level, Optical depth effects, Other velocity features, Peak brightness, Pixel, Positions, Radius, Regression curve, Relative contrast, Same region, Same regions, Same resolution, Scatter plot, Scatter plots, Sest, Simbad data base, Spectral index, Star formation, Strong correlation, Subsequent publication, Swedish european, Telescope, Thin emission, Total intensity, Total mass, Total masses, Tracer, Tted, Tted clump radii, Turbulence, Turnover, Unclipped moment image, Velocity range, Velocity resolution, Velocity structure, Vertical line, Virial equilibrium, Whole region, Zeroth moment, Zeroth moment image.
- Teeft :
- Abundance ratio, Actual peak, Algorithm, Ambipolar diffusion, Arcmin, Arcsec, Australia telescope, Bains, Bandpass, Base contour level, Beam radius, Beam size, Believable clumps, Bottom right, Bourke, Brightest clumps, Brightest knots, Cell spacing, Cent level, Cent levels, Cent results, Centre, Centre position, Centre positions, Centred, Clump, Clump column densities, Clump mass, Clump masses, Clump number, Clump properties, Clump radius, Clump size, Clumpfind, Clumpfind algorithm, Clumpfind analysis, Clumps overlap, Column densities, Column density, Completeness limit, Continuum emission, Deg2 region, Density conditions, Different components, Discrete clumps, Distinct velocity features, Dust clump, Dust clumps, Dust data, Dust emission, Dust structure, Dust structures, Eld, Emission structure, Energy injection, Full bandpass, Full width, Future work, Galactic, Galactic centre, Galactic plane, Galactic rotation, Goss, Grid, High mass, High mass star formation, Higher density tracers, Ira, Journal compilation, Karnik, Klessen, Kramer, Lower density, Main axis, Main beam brightness temperature, Mapping capability, Mass distribution, Mass estimates, Mass ratio, Mass spectrum, Maximum change, Midcourse space experiment, Mmdust clump, Mnras, Molecular clouds, Molecular tracers, Moment image, Mookerjea, Mopra, Mopra antenna, Mopra beam size, Mopra data, Mopra observations, Mopra telescope, More details, Noise level, Optical depth effects, Other velocity features, Peak brightness, Pixel, Radius, Regression curve, Relative contrast, Same region, Same regions, Same resolution, Scatter plot, Scatter plots, Sest, Simbad data base, Spectral index, Star formation, Strong correlation, Subsequent publication, Swedish european, Telescope, Thin emission, Total intensity, Total mass, Total masses, Tracer, Tted, Tted clump radii, Turbulence, Turnover, Unclipped moment image, Velocity range, Velocity resolution, Velocity structure, Vertical line, Virial equilibrium, Whole region, Zeroth moment, Zeroth moment image.
Abstract
We present the first paper in a series detailing the results of 13CO observations of a ∼1 deg2 region of the giant molecular cloud (GMC) complex associated with the H ii region RCW 106. The 13CO observations are also the first stage of a multimolecular line study of the same region. These observations were amongst the first made using the new on‐the‐fly mapping capability of the Australia Telescope National Facility Mopra Telescope. In the configuration used, the instrument provided a full width at half‐maximum (FWHM) beam size of 33 arcsec and a velocity resolution of 0.17 km s−1. The gas emission takes the form of a string of knots, oriented along an axis that extends from the north‐west (NW) to the south‐east (SE) of the field of the observations, and which is surrounded by a more extended, diffuse emission. We analyse the 2D integrated 13CO emission using the clumpfind algorithm and identify 61 clumps. We compare the gas data in the GMC with the dust data provided by 21‐μm Midcourse Space Experiment (MSX) and 1.2‐mm Swedish European Southern Observatory Submillimetre Telescope (SEST) images that we both regridded to the cell spacing of the Mopra data and smoothed to the same resolution. The 13CO emission is more diffuse and extended than the dust emission revealed at the latter two wavebands, which both have a much higher contrast between the peaks and the extended emission. From comparison of their centre positions, we find that only ∼50 per cent of the 13CO clump fits to the data are associated with any dust clumps. Using the clump fits, the total local thermodynamic equilibrium gas mass above the 3σ level measured from the molecular data is 2.7 × 105 M⊙, whereas that measured from the smoothed 1.2‐mm SEST dust data is 2.2 × 105 M⊙.
Url:
DOI: 10.1111/j.1365-2966.2006.10055.x
Affiliations:
- Allemagne, Australie, France, Russie, États-Unis
- District de Cologne, District fédéral central, Pennsylvanie, Rhénanie-du-Nord-Westphalie
- Cologne, Moscou
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Le document en format XML
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Physikalisches Institut, Universitat zu Köln, Zülpicher Strasse 77, 50937 Köln</wicri:regionArea><placeName><region type="land" nuts="1">Rhénanie-du-Nord-Westphalie</region><region type="district" nuts="2">District de Cologne</region><settlement type="city">Cologne</settlement></placeName></affiliation></author><author><name sortKey="Phillips, C" sort="Phillips, C" uniqKey="Phillips C" first="C." last="Phillips">C. Phillips</name><affiliation wicri:level="1"><country xml:lang="fr">Australie</country><wicri:regionArea>Australia Telescope National Facility, CSIRO, PO Box 76, Epping, NSW 1710</wicri:regionArea><wicri:noRegion>NSW 1710</wicri:noRegion></affiliation></author><author><name sortKey="Purcell, C R" sort="Purcell, C R" uniqKey="Purcell C" first="C. R." last="Purcell">C. R. Purcell</name><affiliation wicri:level="1"><country xml:lang="fr">Australie</country><wicri:regionArea>School of Physics, UNSW, Sydney, NSW 2052</wicri:regionArea><wicri:noRegion>NSW 2052</wicri:noRegion></affiliation></author><author><name sortKey="Walsh, A" sort="Walsh, A" uniqKey="Walsh A" first="A." last="Walsh">A. Walsh</name><affiliation wicri:level="1"><country xml:lang="fr">Australie</country><wicri:regionArea>School of Physics, UNSW, Sydney, NSW 2052</wicri:regionArea><wicri:noRegion>NSW 2052</wicri:noRegion></affiliation></author><author><name sortKey="Voronkov, M A" sort="Voronkov, M A" uniqKey="Voronkov M" first="M. A." last="Voronkov">M. A. Voronkov</name><affiliation wicri:level="1"><country xml:lang="fr">Australie</country><wicri:regionArea>Australia Telescope National Facility, CSIRO, PO Box 76, Epping, NSW 1710</wicri:regionArea><wicri:noRegion>NSW 1710</wicri:noRegion></affiliation><affiliation wicri:level="1"><country xml:lang="fr">Russie</country><wicri:regionArea>Astro Space Centre, Profsouznaya St. 84/32, 117997 Moscow</wicri:regionArea><placeName><settlement type="city">Moscou</settlement><region>District fédéral central</region></placeName></affiliation></author><author><name sortKey="Burton, M G" sort="Burton, M G" uniqKey="Burton M" first="M. G." last="Burton">M. G. Burton</name><affiliation wicri:level="1"><country xml:lang="fr">Australie</country><wicri:regionArea>School of Physics, UNSW, Sydney, NSW 2052</wicri:regionArea><wicri:noRegion>NSW 2052</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j" type="main">Monthly Notices of the Royal Astronomical Society</title><title level="j" type="alt">MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY</title><idno type="ISSN">0035-8711</idno><idno type="eISSN">1365-2966</idno><imprint><biblScope unit="vol">367</biblScope><biblScope unit="issue">4</biblScope><biblScope unit="page" from="1609">1609</biblScope><biblScope unit="page" to="1628">1628</biblScope><biblScope unit="page-count">20</biblScope><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2006-04-21">2006-04-21</date></imprint><idno type="ISSN">0035-8711</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0035-8711</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Abundance ratio</term><term>Actual peak</term><term>Algorithm</term><term>Algorithms</term><term>Ambipolar diffusion</term><term>Arcmin</term><term>Arcsec</term><term>Australia telescope</term><term>Bains</term><term>Bandpass</term><term>Base contour level</term><term>Beam radius</term><term>Beam size</term><term>Believable clumps</term><term>Bottom right</term><term>Bourke</term><term>Brightest clumps</term><term>Brightest knots</term><term>Cell spacing</term><term>Cent level</term><term>Cent levels</term><term>Cent results</term><term>Centre</term><term>Centre position</term><term>Centre positions</term><term>Centred</term><term>Clump</term><term>Clump column densities</term><term>Clump mass</term><term>Clump masses</term><term>Clump number</term><term>Clump properties</term><term>Clump radius</term><term>Clump size</term><term>Clumpfind</term><term>Clumpfind algorithm</term><term>Clumpfind analysis</term><term>Clumps overlap</term><term>Column densities</term><term>Column density</term><term>Completeness limit</term><term>Continuum emission</term><term>Deg2 region</term><term>Density conditions</term><term>Different components</term><term>Discrete clumps</term><term>Distinct velocity features</term><term>Dust clump</term><term>Dust clumps</term><term>Dust data</term><term>Dust emission</term><term>Dust structure</term><term>Dust structures</term><term>Eld</term><term>Emission structure</term><term>Energy injection</term><term>Full bandpass</term><term>Full width</term><term>Future work</term><term>Galactic</term><term>Galactic centre</term><term>Galactic plane</term><term>Galactic rotation</term><term>Giant molecular cloud</term><term>Goss</term><term>Grid</term><term>HII regions</term><term>High mass</term><term>High mass star formation</term><term>Higher density tracers</term><term>Ira</term><term>Journal compilation</term><term>Karnik</term><term>Klessen</term><term>Kramer</term><term>LTE</term><term>Lower density</term><term>Main axis</term><term>Main beam brightness temperature</term><term>Mapping capability</term><term>Mapping manifolds</term><term>Mass distribution</term><term>Mass estimates</term><term>Mass ratio</term><term>Mass spectrum</term><term>Maximum change</term><term>Midcourse space experiment</term><term>Mmdust clump</term><term>Mnras</term><term>Molecular clouds</term><term>Molecular tracers</term><term>Moment image</term><term>Mookerjea</term><term>Mopra</term><term>Mopra antenna</term><term>Mopra beam size</term><term>Mopra data</term><term>Mopra observations</term><term>Mopra telescope</term><term>More details</term><term>Noise level</term><term>Optical depth effects</term><term>Other velocity features</term><term>Peak brightness</term><term>Pixel</term><term>Positions</term><term>Radius</term><term>Regression curve</term><term>Relative contrast</term><term>Same region</term><term>Same regions</term><term>Same resolution</term><term>Scatter plot</term><term>Scatter plots</term><term>Sest</term><term>Simbad data base</term><term>Spectral index</term><term>Star formation</term><term>Strong correlation</term><term>Subsequent publication</term><term>Swedish european</term><term>Telescope</term><term>Thin emission</term><term>Total intensity</term><term>Total mass</term><term>Total masses</term><term>Tracer</term><term>Tted</term><term>Tted clump radii</term><term>Turbulence</term><term>Turnover</term><term>Unclipped moment image</term><term>Velocity range</term><term>Velocity resolution</term><term>Velocity structure</term><term>Vertical line</term><term>Virial equilibrium</term><term>Whole region</term><term>Zeroth moment</term><term>Zeroth moment image</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Algorithme</term><term>Equilibre thermodynamique local</term><term>Formation stellaire</term><term>Nuage moléculaire géant</term><term>Position</term><term>Région HII</term><term>Variété applications</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Abundance ratio</term><term>Actual peak</term><term>Algorithm</term><term>Ambipolar diffusion</term><term>Arcmin</term><term>Arcsec</term><term>Australia telescope</term><term>Bains</term><term>Bandpass</term><term>Base contour level</term><term>Beam radius</term><term>Beam size</term><term>Believable clumps</term><term>Bottom right</term><term>Bourke</term><term>Brightest clumps</term><term>Brightest knots</term><term>Cell spacing</term><term>Cent level</term><term>Cent levels</term><term>Cent results</term><term>Centre</term><term>Centre position</term><term>Centre positions</term><term>Centred</term><term>Clump</term><term>Clump column densities</term><term>Clump mass</term><term>Clump masses</term><term>Clump number</term><term>Clump properties</term><term>Clump radius</term><term>Clump size</term><term>Clumpfind</term><term>Clumpfind algorithm</term><term>Clumpfind analysis</term><term>Clumps overlap</term><term>Column densities</term><term>Column density</term><term>Completeness limit</term><term>Continuum emission</term><term>Deg2 region</term><term>Density conditions</term><term>Different components</term><term>Discrete clumps</term><term>Distinct velocity features</term><term>Dust clump</term><term>Dust clumps</term><term>Dust data</term><term>Dust emission</term><term>Dust structure</term><term>Dust structures</term><term>Eld</term><term>Emission structure</term><term>Energy injection</term><term>Full bandpass</term><term>Full width</term><term>Future work</term><term>Galactic</term><term>Galactic centre</term><term>Galactic plane</term><term>Galactic rotation</term><term>Goss</term><term>Grid</term><term>High mass</term><term>High mass star formation</term><term>Higher density tracers</term><term>Ira</term><term>Journal compilation</term><term>Karnik</term><term>Klessen</term><term>Kramer</term><term>Lower density</term><term>Main axis</term><term>Main beam brightness temperature</term><term>Mapping capability</term><term>Mass distribution</term><term>Mass estimates</term><term>Mass ratio</term><term>Mass spectrum</term><term>Maximum change</term><term>Midcourse space experiment</term><term>Mmdust clump</term><term>Mnras</term><term>Molecular clouds</term><term>Molecular tracers</term><term>Moment image</term><term>Mookerjea</term><term>Mopra</term><term>Mopra antenna</term><term>Mopra beam size</term><term>Mopra data</term><term>Mopra observations</term><term>Mopra telescope</term><term>More details</term><term>Noise level</term><term>Optical depth effects</term><term>Other velocity features</term><term>Peak brightness</term><term>Pixel</term><term>Radius</term><term>Regression curve</term><term>Relative contrast</term><term>Same region</term><term>Same regions</term><term>Same resolution</term><term>Scatter plot</term><term>Scatter plots</term><term>Sest</term><term>Simbad data base</term><term>Spectral index</term><term>Star formation</term><term>Strong correlation</term><term>Subsequent publication</term><term>Swedish european</term><term>Telescope</term><term>Thin emission</term><term>Total intensity</term><term>Total mass</term><term>Total masses</term><term>Tracer</term><term>Tted</term><term>Tted clump radii</term><term>Turbulence</term><term>Turnover</term><term>Unclipped moment image</term><term>Velocity range</term><term>Velocity resolution</term><term>Velocity structure</term><term>Vertical line</term><term>Virial equilibrium</term><term>Whole region</term><term>Zeroth moment</term><term>Zeroth moment image</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Niveau sonore</term><term>Chiffre d'affaires</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We present the first paper in a series detailing the results of 13CO observations of a ∼1 deg2 region of the giant molecular cloud (GMC) complex associated with the H ii region RCW 106. The 13CO observations are also the first stage of a multimolecular line study of the same region. These observations were amongst the first made using the new on‐the‐fly mapping capability of the Australia Telescope National Facility Mopra Telescope. In the configuration used, the instrument provided a full width at half‐maximum (FWHM) beam size of 33 arcsec and a velocity resolution of 0.17 km s−1. The gas emission takes the form of a string of knots, oriented along an axis that extends from the north‐west (NW) to the south‐east (SE) of the field of the observations, and which is surrounded by a more extended, diffuse emission. We analyse the 2D integrated 13CO emission using the clumpfind algorithm and identify 61 clumps. We compare the gas data in the GMC with the dust data provided by 21‐μm Midcourse Space Experiment (MSX) and 1.2‐mm Swedish European Southern Observatory Submillimetre Telescope (SEST) images that we both regridded to the cell spacing of the Mopra data and smoothed to the same resolution. The 13CO emission is more diffuse and extended than the dust emission revealed at the latter two wavebands, which both have a much higher contrast between the peaks and the extended emission. From comparison of their centre positions, we find that only ∼50 per cent of the 13CO clump fits to the data are associated with any dust clumps. Using the clump fits, the total local thermodynamic equilibrium gas mass above the 3σ level measured from the molecular data is 2.7 × 105 M⊙, whereas that measured from the smoothed 1.2‐mm SEST dust data is 2.2 × 105 M⊙.</div></front></TEI><affiliations><list><country><li>Allemagne</li><li>Australie</li><li>France</li><li>Russie</li><li>États-Unis</li></country><region><li>District de Cologne</li><li>District fédéral central</li><li>Pennsylvanie</li><li>Rhénanie-du-Nord-Westphalie</li></region><settlement><li>Cologne</li><li>Moscou</li></settlement></list><tree><country name="Australie"><noRegion><name sortKey="Bains, I" sort="Bains, I" uniqKey="Bains I" first="I." last="Bains">I. Bains</name></noRegion><name sortKey="Bains, I" sort="Bains, I" uniqKey="Bains I" first="I." last="Bains">I. Bains</name><name sortKey="Burton, M G" sort="Burton, M G" uniqKey="Burton M" first="M. G." last="Burton">M. G. Burton</name><name sortKey="Calisse, P" sort="Calisse, P" uniqKey="Calisse P" first="P." last="Calisse">P. Calisse</name><name sortKey="Cunningham, M" sort="Cunningham, M" uniqKey="Cunningham M" first="M." last="Cunningham">M. Cunningham</name><name sortKey="Dempsey, J T" sort="Dempsey, J T" uniqKey="Dempsey J" first="J. T." last="Dempsey">J. T. Dempsey</name><name sortKey="Deragopian, G" sort="Deragopian, G" uniqKey="Deragopian G" first="G." last="Deragopian">G. Deragopian</name><name sortKey="Ellingsen, S" sort="Ellingsen, S" uniqKey="Ellingsen S" first="S." last="Ellingsen">S. Ellingsen</name><name sortKey="Fulton, B" sort="Fulton, B" uniqKey="Fulton B" first="B." last="Fulton">B. Fulton</name><name sortKey="Jones, P" sort="Jones, P" uniqKey="Jones P" first="P." last="Jones">P. Jones</name><name sortKey="Kouba, Y" sort="Kouba, Y" uniqKey="Kouba Y" first="Y." last="Kouba">Y. Kouba</name><name sortKey="Longmore, S N" sort="Longmore, S N" uniqKey="Longmore S" first="S. N." last="Longmore">S. N. Longmore</name><name sortKey="Maller, M" sort="Maller, M" uniqKey="Maller M" first="M." last="Maller">M. Maller</name><name sortKey="Mcevoy, J" sort="Mcevoy, J" uniqKey="Mcevoy J" first="J." last="Mcevoy">J. Mcevoy</name><name sortKey="Phillips, C" sort="Phillips, C" uniqKey="Phillips C" first="C." last="Phillips">C. Phillips</name><name sortKey="Purcell, C R" sort="Purcell, C R" uniqKey="Purcell C" first="C. R." last="Purcell">C. R. Purcell</name><name sortKey="Sparks, P" sort="Sparks, P" uniqKey="Sparks P" first="P." last="Sparks">P. Sparks</name><name sortKey="Voronkov, M A" sort="Voronkov, M A" uniqKey="Voronkov M" first="M. A." last="Voronkov">M. A. Voronkov</name><name sortKey="Walsh, A" sort="Walsh, A" uniqKey="Walsh A" first="A." last="Walsh">A. Walsh</name><name sortKey="Wong, T" sort="Wong, T" uniqKey="Wong T" first="T." last="Wong">T. Wong</name><name sortKey="Wong, T" sort="Wong, T" uniqKey="Wong T" first="T." last="Wong">T. Wong</name></country><country name="États-Unis"><region name="Pennsylvanie"><name sortKey="Brisbin, D" sort="Brisbin, D" uniqKey="Brisbin D" first="D." last="Brisbin">D. Brisbin</name></region><name sortKey="Ladd, E F" sort="Ladd, E F" uniqKey="Ladd E" first="E. F." last="Ladd">E. F. Ladd</name></country><country name="France"><noRegion><name sortKey="Herpin, F" sort="Herpin, F" uniqKey="Herpin F" first="F." last="Herpin">F. Herpin</name></noRegion><name sortKey="Minier, V" sort="Minier, V" uniqKey="Minier V" first="V." last="Minier">V. Minier</name><name sortKey="Minier, V" sort="Minier, V" uniqKey="Minier V" first="V." last="Minier">V. Minier</name></country><country name="Allemagne"><region name="Rhénanie-du-Nord-Westphalie"><name sortKey="Kramer, C" sort="Kramer, C" uniqKey="Kramer C" first="C." last="Kramer">C. Kramer</name></region><name sortKey="Mookerjea, B" sort="Mookerjea, B" uniqKey="Mookerjea B" first="B." last="Mookerjea">B. Mookerjea</name></country><country name="Russie"><region name="District fédéral central"><name sortKey="Voronkov, M A" sort="Voronkov, M A" uniqKey="Voronkov M" first="M. A." last="Voronkov">M. A. Voronkov</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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