| Literature DB >> 30820063 |
J P Fonfría1, M Santander-García2, J Cernicharo1, L Velilla-Prieto3, M Agúndez1, N Marcelino1, G Quintana-Lacaci1.
Abstract
We present new interferometer molecular observations of R Leo taken at 1.2 mm with the Atacama Large Millimeter Array with an angular resolution up to ≃ 0 · ″ 026 . These observations permit us to resolve the innermost envelope of this star revealing the existence of a complex structure that involves extended continuum emission and molecular emission showing a non-radial gas velocity distribution. This molecular emission displays prominent red-shifted absorptions located right in front to the star typical of material infall and lateral gas motions compatible with the presence of a torus-like structure.Entities:
Keywords: circumstellar matter; stars: AGB and post-AGB; stars: individual (R Leo); stars: mass-loss; techniques: high angular resolution; techniques: interferometric
Year: 2019 PMID： 30820063 PMCID： PMC6390941 DOI： 10.1051/0004-6361/201834840
Source DB: PubMed Journal: Astron Astrophys ISSN： 0004-6361 Impact factor: 5.802