AustralieFrV1, Main, Exploration, bibRecord, 009314

The RMS survey : 13CO observations of candidate massive YSOs in the southern galactic plane

Identifieur interne : 009314 ( Main/Exploration ); précédent : 009313; suivant : 009315

The RMS survey : 13CO observations of candidate massive YSOs in the southern galactic plane

Auteurs : J. S. Urquhart [Royaume-Uni] ; A. L. Busfield [Royaume-Uni] ; M. G. Hoare [Royaume-Uni] ; S. L. Lumsden [Royaume-Uni] ; R. D. Oudmaijer [Royaume-Uni] ; T. J. T. Moore [Royaume-Uni] ; A. G. Gibb [Canada] ; C. R. Purcell [Australie, Royaume-Uni] ; M. G. Burton [Australie] ; L. J. L. Marechal [France]

Source :

Astronomy and astrophysics : (Berlin. Print) [ 0004-6361 ] ; 2007.

RBID : Pascal:07-0505811

Descripteurs français

Pascal (Inist)
- Objet stellaire jeune, Plan galactique, Galaxies, Couleur, Source ponctuelle, Région H II compacte, Nébuleuse planétaire, Cinématique, Luminosité, Transition rotationnelle, Fréquence transition, Profil raie, Nuage moléculaire, Maser, Multiplicité, Courbe rotation, Vitesse radiale, Formation stellaire, Etoile premier type, Etoile pré séquence principale, Dynamique.

English descriptors

KwdEn :
- Color, Compact H II region, Dynamics, Early type stars, Galactic planes, Galaxies, Kinematics, Line shape, Luminosity, Masers, Molecular clouds, Multiplicity, Planetary nebulae, Point sources, Pre-main-sequence stars, Radial velocity, Rotation curve, Rotational transition, Star formation, Transition frequency, Young stellar object.

Abstract

Context. The Red MSX Source (RMS) survey is an ongoing multi-wavelength observational programme designed to return a large, well-selected sample of massive young stellar objects (MYSOs). We have identified ∼2000 MYSOs candidates located within our Galaxy by comparing the colours of MSX and 2MASS point sources to those of known MYSOs. The aim of our follow-up observations is to identify other contaminating objects such as ultra compact (UC) HII regions, evolved stars and planetary nebulae (PNe) and distinguish between genuine MYSOs and nearby low-mass YSOs. Aims. A critical part of our follow-up programme is to conduct ¹³CO molecular line observations in order to determine kinematic distances to all of our MYSO candidates. These distances will be used in combination with far-IR and (sub)millimetre fluxes to determine bolometric luminosities which will allow us to identify and remove nearby low-mass YSOs. In addition these molecular line observations will help in identifying evolved stars which are weak CO emitters. Methods. We have used the 22 m Mopra telescope, the 15 m JCMT and the 20 m Onsala telescope to conduct molecular line observations towards 854 MYSOs candidates located in the 3rd and 4th quadrants. These observations have been made at the J = 1-0 (Mopra and Onsala) and J = 2-1 (JCMT) rotational transition frequency of ¹³CO molecules and have a spatial resolution of ∼20"-40", a sensitivity of T^*_A ≃ 0.1 K and a velocity resolution of ∼0.2 km s^-1. Results. We detect ¹³CO emission towards a total of 752 of the 854 RMS sources observed (∼88%). In total 2132 emission components are detected above 30^- level (typically T^*_A > 0.3 K). Multiple emission profiles are observed towards the majority of these sources - 461 sources (∼60%) - with an average of ∼4 molecular clouds detected along the line of sight. These multiple emission features make it difficult to assign a kinematic velocity to many of our sample. We have used archival CS (J = 2-1) and maser velocities to resolve the component multiplicity towards 82 sources and have derived a criterion which is used to identify the most likely component for a further 218 multiple component sources. Combined with the single component detections we have obtained unambiguous kinematic velocities towards 591 sources (∼80% of the detections). The 161 sources for which we have not been able to determine the kinematic velocity will require additional line data. Using the rotation curve of Brand & Blitz (1993) and their radial velocities we calculate kinematic distances for all components detected.

Affiliations:

Links toward previous steps (curation, corpus...)

to stream PascalFrancis, to step Corpus: 003906
to stream PascalFrancis, to step Curation: 002782
to stream PascalFrancis, to step Checkpoint: 003587
to stream Main, to step Merge: 009C99
to stream Main, to step Curation: 009314

Le document en format XML

<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">The RMS survey : <sup>13</sup>
CO observations of candidate massive YSOs in the southern galactic plane</title>
<author><name sortKey="Urquhart, J S" sort="Urquhart, J S" uniqKey="Urquhart J" first="J. S." last="Urquhart">J. S. Urquhart</name>
<affiliation wicri:level="4"><inist:fA14 i1="01"><s1>School of Physics and Astrophysics, University of Leeds</s1>
<s2>Leeds LS2 9JT</s2>
<s3>GBR</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
</inist:fA14>
<country>Royaume-Uni</country>
<placeName><settlement type="city">Leeds</settlement>
<region type="country">Angleterre</region>
<region type="région" nuts="1">Yorkshire-et-Humber</region>
</placeName>
<orgName type="university">Université de Leeds</orgName>
</affiliation>
</author>
<author><name sortKey="Busfield, A L" sort="Busfield, A L" uniqKey="Busfield A" first="A. L." last="Busfield">A. L. Busfield</name>
<affiliation wicri:level="4"><inist:fA14 i1="01"><s1>School of Physics and Astrophysics, University of Leeds</s1>
<s2>Leeds LS2 9JT</s2>
<s3>GBR</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
</inist:fA14>
<country>Royaume-Uni</country>
<placeName><settlement type="city">Leeds</settlement>
<region type="country">Angleterre</region>
<region type="région" nuts="1">Yorkshire-et-Humber</region>
</placeName>
<orgName type="university">Université de Leeds</orgName>
</affiliation>
</author>
<author><name sortKey="Hoare, M G" sort="Hoare, M G" uniqKey="Hoare M" first="M. G." last="Hoare">M. G. Hoare</name>
<affiliation wicri:level="4"><inist:fA14 i1="01"><s1>School of Physics and Astrophysics, University of Leeds</s1>
<s2>Leeds LS2 9JT</s2>
<s3>GBR</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
</inist:fA14>
<country>Royaume-Uni</country>
<placeName><settlement type="city">Leeds</settlement>
<region type="country">Angleterre</region>
<region type="région" nuts="1">Yorkshire-et-Humber</region>
</placeName>
<orgName type="university">Université de Leeds</orgName>
</affiliation>
</author>
<author><name sortKey="Lumsden, S L" sort="Lumsden, S L" uniqKey="Lumsden S" first="S. L." last="Lumsden">S. L. Lumsden</name>
<affiliation wicri:level="4"><inist:fA14 i1="01"><s1>School of Physics and Astrophysics, University of Leeds</s1>
<s2>Leeds LS2 9JT</s2>
<s3>GBR</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
</inist:fA14>
<country>Royaume-Uni</country>
<placeName><settlement type="city">Leeds</settlement>
<region type="country">Angleterre</region>
<region type="région" nuts="1">Yorkshire-et-Humber</region>
</placeName>
<orgName type="university">Université de Leeds</orgName>
</affiliation>
</author>
<author><name sortKey="Oudmaijer, R D" sort="Oudmaijer, R D" uniqKey="Oudmaijer R" first="R. D." last="Oudmaijer">R. D. Oudmaijer</name>
<affiliation wicri:level="4"><inist:fA14 i1="01"><s1>School of Physics and Astrophysics, University of Leeds</s1>
<s2>Leeds LS2 9JT</s2>
<s3>GBR</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
</inist:fA14>
<country>Royaume-Uni</country>
<placeName><settlement type="city">Leeds</settlement>
<region type="country">Angleterre</region>
<region type="région" nuts="1">Yorkshire-et-Humber</region>
</placeName>
<orgName type="university">Université de Leeds</orgName>
</affiliation>
</author>
<author><name sortKey="Moore, T J T" sort="Moore, T J T" uniqKey="Moore T" first="T. J. T." last="Moore">T. J. T. Moore</name>
<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf</s1>
<s2>Birkenhead CH41 1LD</s2>
<s3>GBR</s3>
<sZ>6 aut.</sZ>
</inist:fA14>
<country>Royaume-Uni</country>
<wicri:noRegion>Birkenhead CH41 1LD</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Gibb, A G" sort="Gibb, A G" uniqKey="Gibb A" first="A. G." last="Gibb">A. G. Gibb</name>
<affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Department of Physics and Astronomy, University of British Columbia, 6224 Aricultural Road</s1>
<s2>Vancouver, BC, V6T 1Z1</s2>
<s3>CAN</s3>
<sZ>7 aut.</sZ>
</inist:fA14>
<country>Canada</country>
<wicri:noRegion>Vancouver, BC, V6T 1Z1</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"><inist:fA14 i1="04"><s1>School of Physics and Astronomy, University of New South Wales</s1>
<s2>Sydney, NSW 2052</s2>
<s3>AUS</s3>
<sZ>8 aut.</sZ>
<sZ>9 aut.</sZ>
</inist:fA14>
<country>Australie</country>
<wicri:noRegion>Sydney, NSW 2052</wicri:noRegion>
</affiliation>
<affiliation wicri:level="4"><inist:fA14 i1="05"><s1>Jodrell Bank Observatory, University of Manchester</s1>
<s2>Cheshire SK11 9DL</s2>
<s3>GBR</s3>
<sZ>8 aut.</sZ>
</inist:fA14>
<country>Royaume-Uni</country>
<placeName><settlement type="city">Manchester</settlement>
<region type="nation">Angleterre</region>
<region nuts="2" type="region">Grand Manchester</region>
</placeName>
<orgName type="university">Université de Manchester</orgName>
</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"><inist:fA14 i1="04"><s1>School of Physics and Astronomy, University of New South Wales</s1>
<s2>Sydney, NSW 2052</s2>
<s3>AUS</s3>
<sZ>8 aut.</sZ>
<sZ>9 aut.</sZ>
</inist:fA14>
<country>Australie</country>
<wicri:noRegion>Sydney, NSW 2052</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Marechal, L J L" sort="Marechal, L J L" uniqKey="Marechal L" first="L. J. L." last="Marechal">L. J. L. Marechal</name>
<affiliation wicri:level="1"><inist:fA14 i1="06"><s1>École Normale Supérieure, Département de Physique, 24 rue Lhomond</s1>
<s2>75005 Paris</s2>
<s3>FRA</s3>
<sZ>10 aut.</sZ>
</inist:fA14>
<country>France</country>
<wicri:noRegion>75005 Paris</wicri:noRegion>
<placeName><settlement type="city">Paris</settlement>
<region type="région" nuts="2">Île-de-France</region>
</placeName>
</affiliation>
</author>
</titleStmt>
<publicationStmt><idno type="wicri:source">INIST</idno>
<idno type="inist">07-0505811</idno>
<date when="2007">2007</date>
<idno type="stanalyst">PASCAL 07-0505811 INIST</idno>
<idno type="RBID">Pascal:07-0505811</idno>
<idno type="wicri:Area/PascalFrancis/Corpus">003906</idno>
<idno type="wicri:Area/PascalFrancis/Curation">002782</idno>
<idno type="wicri:Area/PascalFrancis/Checkpoint">003587</idno>
<idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">003587</idno>
<idno type="wicri:doubleKey">0004-6361:2007:Urquhart J:the:rms:survey</idno>
<idno type="wicri:Area/Main/Merge">009C99</idno>
<idno type="wicri:Area/Main/Curation">009314</idno>
<idno type="wicri:Area/Main/Exploration">009314</idno>
</publicationStmt>
<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">The RMS survey : <sup>13</sup>
CO observations of candidate massive YSOs in the southern galactic plane</title>
<author><name sortKey="Urquhart, J S" sort="Urquhart, J S" uniqKey="Urquhart J" first="J. S." last="Urquhart">J. S. Urquhart</name>
<affiliation wicri:level="4"><inist:fA14 i1="01"><s1>School of Physics and Astrophysics, University of Leeds</s1>
<s2>Leeds LS2 9JT</s2>
<s3>GBR</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
</inist:fA14>
<country>Royaume-Uni</country>
<placeName><settlement type="city">Leeds</settlement>
<region type="country">Angleterre</region>
<region type="région" nuts="1">Yorkshire-et-Humber</region>
</placeName>
<orgName type="university">Université de Leeds</orgName>
</affiliation>
</author>
<author><name sortKey="Busfield, A L" sort="Busfield, A L" uniqKey="Busfield A" first="A. L." last="Busfield">A. L. Busfield</name>
<affiliation wicri:level="4"><inist:fA14 i1="01"><s1>School of Physics and Astrophysics, University of Leeds</s1>
<s2>Leeds LS2 9JT</s2>
<s3>GBR</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
</inist:fA14>
<country>Royaume-Uni</country>
<placeName><settlement type="city">Leeds</settlement>
<region type="country">Angleterre</region>
<region type="région" nuts="1">Yorkshire-et-Humber</region>
</placeName>
<orgName type="university">Université de Leeds</orgName>
</affiliation>
</author>
<author><name sortKey="Hoare, M G" sort="Hoare, M G" uniqKey="Hoare M" first="M. G." last="Hoare">M. G. Hoare</name>
<affiliation wicri:level="4"><inist:fA14 i1="01"><s1>School of Physics and Astrophysics, University of Leeds</s1>
<s2>Leeds LS2 9JT</s2>
<s3>GBR</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
</inist:fA14>
<country>Royaume-Uni</country>
<placeName><settlement type="city">Leeds</settlement>
<region type="country">Angleterre</region>
<region type="région" nuts="1">Yorkshire-et-Humber</region>
</placeName>
<orgName type="university">Université de Leeds</orgName>
</affiliation>
</author>
<author><name sortKey="Lumsden, S L" sort="Lumsden, S L" uniqKey="Lumsden S" first="S. L." last="Lumsden">S. L. Lumsden</name>
<affiliation wicri:level="4"><inist:fA14 i1="01"><s1>School of Physics and Astrophysics, University of Leeds</s1>
<s2>Leeds LS2 9JT</s2>
<s3>GBR</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
</inist:fA14>
<country>Royaume-Uni</country>
<placeName><settlement type="city">Leeds</settlement>
<region type="country">Angleterre</region>
<region type="région" nuts="1">Yorkshire-et-Humber</region>
</placeName>
<orgName type="university">Université de Leeds</orgName>
</affiliation>
</author>
<author><name sortKey="Oudmaijer, R D" sort="Oudmaijer, R D" uniqKey="Oudmaijer R" first="R. D." last="Oudmaijer">R. D. Oudmaijer</name>
<affiliation wicri:level="4"><inist:fA14 i1="01"><s1>School of Physics and Astrophysics, University of Leeds</s1>
<s2>Leeds LS2 9JT</s2>
<s3>GBR</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
</inist:fA14>
<country>Royaume-Uni</country>
<placeName><settlement type="city">Leeds</settlement>
<region type="country">Angleterre</region>
<region type="région" nuts="1">Yorkshire-et-Humber</region>
</placeName>
<orgName type="university">Université de Leeds</orgName>
</affiliation>
</author>
<author><name sortKey="Moore, T J T" sort="Moore, T J T" uniqKey="Moore T" first="T. J. T." last="Moore">T. J. T. Moore</name>
<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf</s1>
<s2>Birkenhead CH41 1LD</s2>
<s3>GBR</s3>
<sZ>6 aut.</sZ>
</inist:fA14>
<country>Royaume-Uni</country>
<wicri:noRegion>Birkenhead CH41 1LD</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Gibb, A G" sort="Gibb, A G" uniqKey="Gibb A" first="A. G." last="Gibb">A. G. Gibb</name>
<affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Department of Physics and Astronomy, University of British Columbia, 6224 Aricultural Road</s1>
<s2>Vancouver, BC, V6T 1Z1</s2>
<s3>CAN</s3>
<sZ>7 aut.</sZ>
</inist:fA14>
<country>Canada</country>
<wicri:noRegion>Vancouver, BC, V6T 1Z1</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"><inist:fA14 i1="04"><s1>School of Physics and Astronomy, University of New South Wales</s1>
<s2>Sydney, NSW 2052</s2>
<s3>AUS</s3>
<sZ>8 aut.</sZ>
<sZ>9 aut.</sZ>
</inist:fA14>
<country>Australie</country>
<wicri:noRegion>Sydney, NSW 2052</wicri:noRegion>
</affiliation>
<affiliation wicri:level="4"><inist:fA14 i1="05"><s1>Jodrell Bank Observatory, University of Manchester</s1>
<s2>Cheshire SK11 9DL</s2>
<s3>GBR</s3>
<sZ>8 aut.</sZ>
</inist:fA14>
<country>Royaume-Uni</country>
<placeName><settlement type="city">Manchester</settlement>
<region type="nation">Angleterre</region>
<region nuts="2" type="region">Grand Manchester</region>
</placeName>
<orgName type="university">Université de Manchester</orgName>
</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"><inist:fA14 i1="04"><s1>School of Physics and Astronomy, University of New South Wales</s1>
<s2>Sydney, NSW 2052</s2>
<s3>AUS</s3>
<sZ>8 aut.</sZ>
<sZ>9 aut.</sZ>
</inist:fA14>
<country>Australie</country>
<wicri:noRegion>Sydney, NSW 2052</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Marechal, L J L" sort="Marechal, L J L" uniqKey="Marechal L" first="L. J. L." last="Marechal">L. J. L. Marechal</name>
<affiliation wicri:level="1"><inist:fA14 i1="06"><s1>École Normale Supérieure, Département de Physique, 24 rue Lhomond</s1>
<s2>75005 Paris</s2>
<s3>FRA</s3>
<sZ>10 aut.</sZ>
</inist:fA14>
<country>France</country>
<wicri:noRegion>75005 Paris</wicri:noRegion>
<placeName><settlement type="city">Paris</settlement>
<region type="région" nuts="2">Île-de-France</region>
</placeName>
</affiliation>
</author>
</analytic>
<series><title level="j" type="main">Astronomy and astrophysics : (Berlin. Print)</title>
<title level="j" type="abbreviated">Astron. astrophys. : (Berl., Print)</title>
<idno type="ISSN">0004-6361</idno>
<imprint><date when="2007">2007</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
<seriesStmt><title level="j" type="main">Astronomy and astrophysics : (Berlin. Print)</title>
<title level="j" type="abbreviated">Astron. astrophys. : (Berl., Print)</title>
<idno type="ISSN">0004-6361</idno>
</seriesStmt>
</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Color</term>
<term>Compact H II region</term>
<term>Dynamics</term>
<term>Early type stars</term>
<term>Galactic planes</term>
<term>Galaxies</term>
<term>Kinematics</term>
<term>Line shape</term>
<term>Luminosity</term>
<term>Masers</term>
<term>Molecular clouds</term>
<term>Multiplicity</term>
<term>Planetary nebulae</term>
<term>Point sources</term>
<term>Pre-main-sequence stars</term>
<term>Radial velocity</term>
<term>Rotation curve</term>
<term>Rotational transition</term>
<term>Star formation</term>
<term>Transition frequency</term>
<term>Young stellar object</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Objet stellaire jeune</term>
<term>Plan galactique</term>
<term>Galaxies</term>
<term>Couleur</term>
<term>Source ponctuelle</term>
<term>Région H II compacte</term>
<term>Nébuleuse planétaire</term>
<term>Cinématique</term>
<term>Luminosité</term>
<term>Transition rotationnelle</term>
<term>Fréquence transition</term>
<term>Profil raie</term>
<term>Nuage moléculaire</term>
<term>Maser</term>
<term>Multiplicité</term>
<term>Courbe rotation</term>
<term>Vitesse radiale</term>
<term>Formation stellaire</term>
<term>Etoile premier type</term>
<term>Etoile pré séquence principale</term>
<term>Dynamique</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en">Context. The Red MSX Source (RMS) survey is an ongoing multi-wavelength observational programme designed to return a large, well-selected sample of massive young stellar objects (MYSOs). We have identified ∼2000 MYSOs candidates located within our Galaxy by comparing the colours of MSX and 2MASS point sources to those of known MYSOs. The aim of our follow-up observations is to identify other contaminating objects such as ultra compact (UC) HII regions, evolved stars and planetary nebulae (PNe) and distinguish between genuine MYSOs and nearby low-mass YSOs. Aims. A critical part of our follow-up programme is to conduct <sup>13</sup>
CO molecular line observations in order to determine kinematic distances to all of our MYSO candidates. These distances will be used in combination with far-IR and (sub)millimetre fluxes to determine bolometric luminosities which will allow us to identify and remove nearby low-mass YSOs. In addition these molecular line observations will help in identifying evolved stars which are weak CO emitters. Methods. We have used the 22 m Mopra telescope, the 15 m JCMT and the 20 m Onsala telescope to conduct molecular line observations towards 854 MYSOs candidates located in the 3rd and 4th quadrants. These observations have been made at the J = 1-0 (Mopra and Onsala) and J = 2-1 (JCMT) rotational transition frequency of <sup>13</sup>
CO molecules and have a spatial resolution of ∼20"-40", a sensitivity of T<sup>*</sup>
<sub>A</sub>
 ≃ 0.1 K and a velocity resolution of ∼0.2 km s<sup>-1</sup>
. Results. We detect <sup>13</sup>
CO emission towards a total of 752 of the 854 RMS sources observed (∼88%). In total 2132 emission components are detected above 30<sup>-</sup>
 level (typically T<sup>*</sup>
<sub>A</sub>
 > 0.3 K). Multiple emission profiles are observed towards the majority of these sources - 461 sources (∼60%) - with an average of ∼4 molecular clouds detected along the line of sight. These multiple emission features make it difficult to assign a kinematic velocity to many of our sample. We have used archival CS (J = 2-1) and maser velocities to resolve the component multiplicity towards 82 sources and have derived a criterion which is used to identify the most likely component for a further 218 multiple component sources. Combined with the single component detections we have obtained unambiguous kinematic velocities towards 591 sources (∼80% of the detections). The 161 sources for which we have not been able to determine the kinematic velocity will require additional line data. Using the rotation curve of Brand & Blitz (1993) and their radial velocities we calculate kinematic distances for all components detected.</div>
</front>
</TEI>
<affiliations><list><country><li>Australie</li>
<li>Canada</li>
<li>France</li>
<li>Royaume-Uni</li>
</country>
<region><li>Angleterre</li>
<li>Grand Manchester</li>
<li>Yorkshire-et-Humber</li>
<li>Île-de-France</li>
</region>
<settlement><li>Leeds</li>
<li>Manchester</li>
<li>Paris</li>
</settlement>
<orgName><li>Université de Leeds</li>
<li>Université de Manchester</li>
</orgName>
</list>
<tree><country name="Royaume-Uni"><region name="Angleterre"><name sortKey="Urquhart, J S" sort="Urquhart, J S" uniqKey="Urquhart J" first="J. S." last="Urquhart">J. S. Urquhart</name>
</region>
<name sortKey="Busfield, A L" sort="Busfield, A L" uniqKey="Busfield A" first="A. L." last="Busfield">A. L. Busfield</name>
<name sortKey="Hoare, M G" sort="Hoare, M G" uniqKey="Hoare M" first="M. G." last="Hoare">M. G. Hoare</name>
<name sortKey="Lumsden, S L" sort="Lumsden, S L" uniqKey="Lumsden S" first="S. L." last="Lumsden">S. L. Lumsden</name>
<name sortKey="Moore, T J T" sort="Moore, T J T" uniqKey="Moore T" first="T. J. T." last="Moore">T. J. T. Moore</name>
<name sortKey="Oudmaijer, R D" sort="Oudmaijer, R D" uniqKey="Oudmaijer R" first="R. D." last="Oudmaijer">R. D. Oudmaijer</name>
<name sortKey="Purcell, C R" sort="Purcell, C R" uniqKey="Purcell C" first="C. R." last="Purcell">C. R. Purcell</name>
</country>
<country name="Canada"><noRegion><name sortKey="Gibb, A G" sort="Gibb, A G" uniqKey="Gibb A" first="A. G." last="Gibb">A. G. Gibb</name>
</noRegion>
</country>
<country name="Australie"><noRegion><name sortKey="Purcell, C R" sort="Purcell, C R" uniqKey="Purcell C" first="C. R." last="Purcell">C. R. Purcell</name>
</noRegion>
<name sortKey="Burton, M G" sort="Burton, M G" uniqKey="Burton M" first="M. G." last="Burton">M. G. Burton</name>
</country>
<country name="France"><region name="Île-de-France"><name sortKey="Marechal, L J L" sort="Marechal, L J L" uniqKey="Marechal L" first="L. J. L." last="Marechal">L. J. L. Marechal</name>
</region>
</country>
</tree>
</affiliations>
</record>

Pour manipuler ce document sous Unix (Dilib)

EXPLOR_STEP=$WICRI_ROOT/Wicri/Asie/explor/AustralieFrV1/Data/Main/Exploration

HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 009314 | SxmlIndent | more

HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 009314 | SxmlIndent | more

Pour mettre un lien sur cette page dans le réseau Wicri

{{Explor lien
   |wiki=    Wicri/Asie
   |area=    AustralieFrV1
   |flux=    Main
   |étape=   Exploration
   |type=    RBID
   |clé=     Pascal:07-0505811
   |texte=   The RMS survey : 13CO observations of candidate massive YSOs in the southern galactic plane
}}

This area was generated with Dilib version V0.6.33.
Data generation: Tue Dec 5 10:43:12 2017. Site generation: Tue Mar 5 14:07:20 2024

	Serveur d'exploration sur les relations entre la France et l'Australie
	Attention, ce site est en cours de développement ! Attention, site généré par des moyens informatiques à partir de corpus bruts. Les informations ne sont donc pas validées.

Serveur d'exploration sur les relations entre la France et l'Australie

The RMS survey : 13CO observations of candidate massive YSOs in the southern galactic plane

The RMS survey : 13CO observations of candidate massive YSOs in the southern galactic plane

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri