6.7GHz methanol maser flare in G11.497-1.485

DOI

Maser flares are of particular significance for the study of massive star formation as they not only signal but also provide unique insights into transient phenomena such as accretion bursts. With this project, we aim to investigate the context of the ongoing 6.7 GHz methanol maser flare in the little-known massive star forming region G11.497-1.485. Two epoch of the Karl G. Jansky Very Large Array (VLA) observations have been performed for 6.7GHz and 12GHz class II methanol, and 22GHz water masers, as well as continuum at C, Ku, and K-bands. The VLA overview revealed the presence of five distinct radio-continuum sources (CM1-4 and N) in G11.497-1.485. The central source CM1 is found to show signs of accretion disk fragmentation, highlighted by the cm-continuum traced fragments, as well as to drive a high-energy jet, the ends of which are marked by non-thermal knots CM2 and CM3. CM1 showed a gradual flaring of methanol masers and fading of a 22GHz water maser, which might be signalling an accretion burst. The two remaining sources of the region, CM4 and N, revealed one of the most compact jet and disk-jet systems found to date. The obtained data revealed, for the first time, the structure of the G11.497-1.485 region. The change in fluxes of the maser and continuum emission confirmed a transient event and revealed its impact on multiple sources in the region.

Cone search capability for table J/A+A/684/A86/tablea1 (Parameters of the 6.7GHz CH3OH maser in G11.497-1.485 CM1)

Cone search capability for table J/A+A/684/A86/tablea2 (Parameters of the 12GHz CH3OH maser in G11.497-1.485 CM1)

Cone search capability for table J/A+A/684/A86/tablea3 (Parameters of the 22GHz H2O maser in G11.497-1.485 CM1)

Cone search capability for table J/A+A/684/A86/tablea4 (Parameters of the 22GHz H2O maser in G11.497-1.485 CM4)

Cone search capability for table J/A+A/684/A86/tablea5 (Parameters of the 6.7GHz CH3OH maser in G11.497-1.485 N)

Cone search capability for table J/A+A/684/A86/tablea6 (Parameters of the 22GHz H2O maser in G11.497-1.485 N)

Identifier
DOI http://doi.org/10.26093/cds/vizier.36840086
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/A+A/684/A86
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/684/A86
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/684/A86
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/A+A/684/A86
Provenance
Creator Bayandina O.S.; Burns R.A.; Caratti o Caratti A.; Kurtz S.E.; Moscadelli L.,Shakhvorostova N.N.; Sobolev A.M.; Tanabe Y.; Val'tts I.E.; Yonekura Y.
Publisher CDS
Publication Year 2024
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Cosmology; Galactic and extragalactic Astronomy; Interstellar medium; Natural Sciences; Observational Astronomy; Physics; Stellar Astronomy