LeHavreV1, France, Analysis, bibRecord, 000155

SI-BEARING MOLECULES TOWARD IRC+10216: ALMA UNVEILS THE MOLECULAR ENVELOPE OF CWLEO

Identifieur interne : 000155 ( France/Analysis ); précédent : 000154; suivant : 000156

SI-BEARING MOLECULES TOWARD IRC+10216: ALMA UNVEILS THE MOLECULAR ENVELOPE OF CWLEO

Auteurs : L. Velilla Prieto [Espagne] ; J. Cernicharo [Espagne] ; G. Quintana Acaci [Espagne] ; M. Agúndez [Espagne] ; A. Castro Arrizo [France] ; J. P. Fonf Ia [Mexique] ; N. Marcelino [Italie] ; J. Zú Iga [Espagne] ; A. Requena [Espagne] ; A. Bastida [Espagne] ; F. Lique [France] ; M. Guélin [France]

Source :

The astrophysical journal. Letters [ 2041-8205 ] ; 2015.

RBID : PMC:4681092

Abstract

We report the detection of SiS rotational lines in high-vibrational states as well as SiO and SiC₂ lines in their ground vibrational state toward IRC+10216 during the Atacama Large Millimeter Array Cycle 0. The spatial distribution of these molecules shows compact emission for SiS and a more extended emission for SiO and SiC₂, and also proves the existence of an increase in the SiC₂ emission at the outer shells of the circumstellar envelope. We analyze the excitation conditions of the vibrationally excited SiS using the population diagram technique, and we use a large velocity gradient model to compare with the observations. We found moderate discrepancies between the observations and the models that could be explained if SiS lines detected are optically thick. Additionally, the line profiles of the detected rotational lines in the high energy vibrational states show a decreasing linewidth with increasing energy levels. This may be evidence that these lines could be excited only in the inner shells, i.e., the densest and hottest, of the circumstellar envelope of IRC+10216.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4681092

DOI: 10.1088/2041-8205/805/2/L13
PubMed: 26688711
PubMed Central: 4681092

Affiliations:

Links to Exploration step

PMC:4681092

Le document en format XML

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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">SI-BEARING MOLECULES TOWARD IRC+10216: ALMA UNVEILS THE MOLECULAR ENVELOPE OF CWLEO</title>
<author><name sortKey="Prieto, L Velilla" sort="Prieto, L Velilla" uniqKey="Prieto L" first="L. Velilla" last="Prieto">L. Velilla Prieto</name>
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<author><name sortKey="Bastida, A" sort="Bastida, A" uniqKey="Bastida A" first="A." last="Bastida">A. Bastida</name>
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<country xml:lang="fr">France</country>
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<wicri:regionArea>LERMA, Observatoire de Paris, PSL Research University, CNRS, UMR 8112, F-75014, Paris</wicri:regionArea>
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<series><title level="j">The astrophysical journal. Letters</title>
<idno type="ISSN">2041-8205</idno>
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<front><div type="abstract" xml:lang="en"><p id="P1">We report the detection of SiS rotational lines in high-vibrational states as well as SiO and SiC<sub>2</sub>
 lines in their ground vibrational state toward IRC+10216 during the Atacama Large Millimeter Array Cycle 0. The spatial distribution of these molecules shows compact emission for SiS and a more extended emission for SiO and SiC<sub>2</sub>
, and also proves the existence of an increase in the SiC<sub>2</sub>
 emission at the outer shells of the circumstellar envelope. We analyze the excitation conditions of the vibrationally excited SiS using the population diagram technique, and we use a large velocity gradient model to compare with the observations. We found moderate discrepancies between the observations and the models that could be explained if SiS lines detected are optically thick. Additionally, the line profiles of the detected rotational lines in the high energy vibrational states show a decreasing linewidth with increasing energy levels. This may be evidence that these lines could be excited only in the inner shells, i.e., the densest and hottest, of the circumstellar envelope of IRC+10216.</p>
</div>
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<li>Communauté de Madrid</li>
<li>Haute-Normandie</li>
<li>Rhône-Alpes</li>
<li>Région Normandie</li>
<li>Région de Murcie</li>
<li>Île-de-France</li>
</region>
<settlement><li>Le Havre</li>
<li>Madrid</li>
<li>Paris</li>
<li>Saint Martin d’Hères</li>
</settlement>
<orgName><li>Université du Havre</li>
</orgName>
</list>
<tree><country name="Espagne"><region name="Communauté de Madrid"><name sortKey="Prieto, L Velilla" sort="Prieto, L Velilla" uniqKey="Prieto L" first="L. Velilla" last="Prieto">L. Velilla Prieto</name>
</region>
<name sortKey="Agundez, M" sort="Agundez, M" uniqKey="Agundez M" first="M." last="Agúndez">M. Agúndez</name>
<name sortKey="Bastida, A" sort="Bastida, A" uniqKey="Bastida A" first="A." last="Bastida">A. Bastida</name>
<name sortKey="Cernicharo, J" sort="Cernicharo, J" uniqKey="Cernicharo J" first="J." last="Cernicharo">J. Cernicharo</name>
<name sortKey="Prieto, L Velilla" sort="Prieto, L Velilla" uniqKey="Prieto L" first="L. Velilla" last="Prieto">L. Velilla Prieto</name>
<name sortKey="Quintana Acaci, G" sort="Quintana Acaci, G" uniqKey="Quintana Acaci G" first="G." last="Quintana Acaci">G. Quintana Acaci</name>
<name sortKey="Requena, A" sort="Requena, A" uniqKey="Requena A" first="A." last="Requena">A. Requena</name>
<name sortKey="Zu Iga, J" sort="Zu Iga, J" uniqKey="Zu Iga J" first="J." last="Zú Iga">J. Zú Iga</name>
</country>
<country name="France"><region name="Auvergne-Rhône-Alpes"><name sortKey="Castro Arrizo, A" sort="Castro Arrizo, A" uniqKey="Castro Arrizo A" first="A." last="Castro Arrizo">A. Castro Arrizo</name>
</region>
<name sortKey="Guelin, M" sort="Guelin, M" uniqKey="Guelin M" first="M." last="Guélin">M. Guélin</name>
<name sortKey="Guelin, M" sort="Guelin, M" uniqKey="Guelin M" first="M." last="Guélin">M. Guélin</name>
<name sortKey="Lique, F" sort="Lique, F" uniqKey="Lique F" first="F." last="Lique">F. Lique</name>
</country>
<country name="Mexique"><noRegion><name sortKey="Fonf Ia, J P" sort="Fonf Ia, J P" uniqKey="Fonf Ia J" first="J. P." last="Fonf Ia">J. P. Fonf Ia</name>
</noRegion>
</country>
<country name="Italie"><noRegion><name sortKey="Marcelino, N" sort="Marcelino, N" uniqKey="Marcelino N" first="N." last="Marcelino">N. Marcelino</name>
</noRegion>
</country>
</tree>
</affiliations>
</record>

Pour manipuler ce document sous Unix (Dilib)

EXPLOR_STEP=$WICRI_ROOT/Wicri/France/explor/LeHavreV1/Data/France/Analysis

HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000155 | SxmlIndent | more

HfdSelect -h $EXPLOR_AREA/Data/France/Analysis/biblio.hfd -nk 000155 | SxmlIndent | more

Pour mettre un lien sur cette page dans le réseau Wicri

{{Explor lien
   |wiki=    Wicri/France
   |area=    LeHavreV1
   |flux=    France
   |étape=   Analysis
   |type=    RBID
   |clé=     PMC:4681092
   |texte=   SI-BEARING MOLECULES TOWARD IRC+10216: ALMA UNVEILS THE MOLECULAR ENVELOPE OF CWLEO
}}

Pour générer des pages wiki

HfdIndexSelect -h $EXPLOR_AREA/Data/France/Analysis/RBID.i   -Sk "pubmed:26688711" \
       | HfdSelect -Kh $EXPLOR_AREA/Data/France/Analysis/biblio.hfd   \
       | NlmPubMed2Wicri -a LeHavreV1

This area was generated with Dilib version V0.6.25.
Data generation: Sat Dec 3 14:37:02 2016. Site generation: Tue Mar 5 08:25:07 2024

Serveur d'exploration sur la visibilité du Havre

SI-BEARING MOLECULES TOWARD IRC+10216: ALMA UNVEILS THE MOLECULAR ENVELOPE OF CWLEO

SI-BEARING MOLECULES TOWARD IRC+10216: ALMA UNVEILS THE MOLECULAR ENVELOPE OF CWLEO

Source :

Abstract

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

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki

	Serveur d'exploration sur la visibilité du Havre
	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.