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A global view on star formation: the GLOSTAR Galactic plane survey

dc.contributor.authorORTIZ-LEÓN, Gisela
dc.contributor.authorMENTEN, Karl
dc.contributor.authorBRUNTHALER, Andreas
hal.structure.identifierFEMIS 2021
dc.contributor.authorCSENGERI, Timea
dc.contributor.authorURQUHART, James
dc.contributor.authorWYROWSKI, Friedrich
dc.contributor.authorGONG, Yan
dc.contributor.authorRUGEL, Michael
dc.contributor.authorDZIB, Sergio
dc.contributor.authorYANG, Aiyuan
dc.contributor.authorNGUYEN, Hans
dc.contributor.authorCOTTON, William
dc.contributor.authorMEDINA, Sac Nicté X.
dc.contributor.authorDOKARA, Rohit
dc.contributor.authorKÖNIG, Carsten
dc.contributor.authorBEUTHER, Henrik
dc.contributor.authorPANDIAN, Jagadheep
dc.contributor.authorREICH, Wolfgang
dc.contributor.authorROY, Nirupam
dc.date.issued2021-07
dc.identifier.issn0004-6361
dc.description.abstractEnThe Cygnus X complex is covered by the Global View of Star Formation in the Milky Way (GLOSTAR) survey, an unbiased radio-wavelength Galactic plane survey, in 4–8 GHz continuum radiation and several spectral lines. The GLOSTAR survey observed the 6.7 GHz transition of methanol (CH 3 OH), an exclusive tracer of high-mass young stellar objects. Using the Very Large Array in both the B and D configurations, we observed an area in Cygnus X of 7° × 3° in size and simultaneously covered the methanol line and the continuum, allowing cross-registration. We detected thirteen sources with Class II methanol maser emission and one source with methanol absorption. Two methanol maser sources are newly detected; in addition, we found four new velocity components associated with known masers. Five masers are concentrated in the DR21 ridge and W75N. We determined the characteristics of the detected masers and investigated the association with infrared, (sub)millimeter, and radio continuum emission. All maser sources are associated with (sub)millimeter dust continuum emission, which is consistent with the picture of masers tracing regions in an active stage of star formation. On the other hand, only five masers (38 ± 17%) have radio continuum counterparts seen with GLOSTAR within ~1″, testifying to their youth. Comparing the distributions of the bolometric luminosity and the luminosity-to-mass ratio of cores that host 6.7 GHz methanol masers with those of the full core population, we identified lower limits L Bol ~ 200 L ⊙ and L Bol / M core ~ 1 L ⊙ M ⊙ −1 for a dust source to host maser emission.
dc.description.sponsorshipInitiative d'excellence de l'Université de Bordeaux
dc.description.sponsorshipFUTURE - ANR-16-IDEX-0003
dc.language.isoen
dc.publisherEDP Sciences
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.title.enA global view on star formation: the GLOSTAR Galactic plane survey
dc.typeArticle de revue
dc.identifier.doi10.1051/0004-6361/202140817
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Astrophysique galactique [astro-ph.GA]
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]
bordeaux.journalAstronomy and Astrophysics - A&A
bordeaux.pageA87
bordeaux.volume651
bordeaux.peerReviewedoui
hal.identifierinsu-03439597
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//insu-03439597v1
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