2016/03/03 by P. de Vicente, V. Bujarrabal, A. Díaz-Pulido +19 · 31 citations
Mathematics · Physics and Astronomy · #Astro and Planetary Science #Astronomy #Astrophysics #Astrophysics and Star Formation Studies #Asymptotic giant branch #Geometry #Line (geometry) #Mathematics #Optics #Physics #Planetary nebula #Plateau (mathematics) #Stars #Stellar, planetary, and galactic studies #Symmetry (geometry) #Wavelength #astro-ph.GA #astro-ph.SR
paper · pdf · doi:10.1051/0004-6361/201527174
published in Astronomy and Astrophysics 589, A74 (EDP Sciences) · 12 pages, 28 figures. To be published in Astronomy and Astrophysics
arxiv created 2016/03/03 · openalex publication_date 2016/03/04 · arxiv updated 2016/04/20 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Aims. Observations of 28SiO v = 0J = 1–0 line emission (7-mm wavelength) from asymptotic giant branch (AGB) stars show in some cases peculiar profiles, composed of a central intense component plus a wider plateau. Very similar profiles have been observed in CO lines from some AGB stars and most post-AGB nebulae and, in these cases, they are clearly associated with the presence of conspicuous axial symmetry and bipolar dynamics. We aim to systematically study the profile shape of 28SiO v = 0J = 1–0 lines in evolved stars and to discuss the origin of the composite profile structure.