Afficher la notice abrégée

APEX Band 9 Reveals Vibrationally Excited Water Sources in Evolved Stars

hal.structure.identifierFORMATION STELLAIRE 2018
dc.contributor.authorBAUDRY, Alain
hal.structure.identifierFORMATION STELLAIRE 2018
dc.contributor.authorHERPIN, Fabrice
dc.contributor.authorHUMPHREYS, E.
hal.structure.identifierEuropean Southern Observatory [ESO]
dc.contributor.authorTORSTENSSON, K.
dc.contributor.authorVLEMMINGS, W.
dc.contributor.authorRICHARDS, A.
dc.contributor.authorGRAY, M.
dc.contributor.authorDE BREUCK, C..
hal.structure.identifierOnsala Space Observatory
dc.contributor.authorOLBERG, M.
dc.date.issued2018
dc.identifier.issn0722-6691
dc.description.abstractEnWe have used the Atacama Pathfinder Experiment (APEX) telescope with the sensitive Swedish-ESO PI APEX (SEPIA) Band 9 receiver to discover several new vibrationally excited line sources of water at 658 GHz in the atmosphere of selected O-rich evolved stars. We have shown that this transition is masing and can be used to probe the gas in the dust formation zone or the wind beyond the central star. The 658 GHz line is widespread in evolved stars but most sources are weaker than about 300–500 Jy. However, some exceptional cases reach up to a few thousand Jy. New models incorporating several vibrationally excited transitions of water allow us to predict the physical conditions prevailing in 658 GHz sources. The strongest ones could be mapped with ALMA to study the small-scale clumpiness of the gas in the dust formation zone or, more generally, the stellar wind.
dc.language.isoen
dc.publisherEuropean Southern Observatory
dc.title.enAPEX Band 9 Reveals Vibrationally Excited Water Sources in Evolved Stars
dc.typeArticle de revue
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Astrophysique galactique [astro-ph.GA]
bordeaux.journalThe Messenger
bordeaux.page37-41
bordeaux.volume171
bordeaux.peerReviewedoui
hal.identifierhal-01756786
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01756786v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=The%20Messenger&rft.date=2018&rft.volume=171&rft.spage=37-41&rft.epage=37-41&rft.eissn=0722-6691&rft.issn=0722-6691&rft.au=BAUDRY,%20Alain&HERPIN,%20Fabrice&HUMPHREYS,%20E.&TORSTENSSON,%20K.&VLEMMINGS,%20W.&rft.genre=article


Fichier(s) constituant ce document

FichiersTailleFormatVue

Il n'y a pas de fichiers associés à ce document.

Ce document figure dans la(les) collection(s) suivante(s)

Afficher la notice abrégée