First VLBA observations of 28SiO J=1-0, v=3 maser emission from AGB stars
Paper i proceeding, 2014

The v=1 & v=2 J=1-0 (43 GHz), and v=1 J=2-1 (86 GHz) SiO masers are intense in AGB stars. They have been mapped using VLBI displaying spots ring-like distributions. The rings of the v=1, v=2 J=1-0 masers are similar, but the spots are rarely coincident, while the v=1 J=2-1 maser arises from a well separated region farther out. The v=3 J=1-0 line is not directly affected by any line overlap and its spot structure and position, relative to the other lines, is a good test to the standard pumping models. We present simultaneous single dish and VLBI observations of the v=1, v=2, and v=3 J=1-0 maser transitions of 28SiO in several AGB stars and compare them to model predictions. © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.


J. F. Desmurs

Observatorio Astronómico Nacional (OAN)

V. Bujarrabal

Observatorio Astronómico Nacional (OAN)

Michael Lindqvist

Chalmers, Rymd- och geovetenskap, Onsala rymdobservatorium

J. Alcolea

Observatorio Astronómico Nacional (OAN)

R. Soria-Ruiz

Observatorio Astronómico Nacional (OAN)

Per Bergman

Chalmers, Rymd- och geovetenskap, Onsala rymdobservatorium

Proceedings of Science

18248039 (eISSN)

Vol. 2014 060

12th European VLBI Network Symposium and Users Meeting, EVN 2014
Cagliari, Italy,


Hållbar utveckling


Astronomi, astrofysik och kosmologi


Grundläggande vetenskaper

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