Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998a%26a...329..219p&link_type=abstract
Astronomy and Astrophysics, v.329, p.219-228 (1998)
Astronomy and Astrophysics
Astrophysics
15
Stars: Agb, Post-Agb, Masers, Stars: Circumstellar Matter, Radio-Lines: Stars
Scientific paper
We present simultaneous observations of several rotational lines of (28) SiO in the v=1, 2, 3, and 4 vibrationally excited states toward O-rich evolved stars. All the data were taken in a relatively short period of 65 days, which allows a comparative study of the (28) SiO maser lines intensities and profiles. The observed differences concerning intensity and line shape among the different maser lines suggest that infrared overlaps deeply affect the pumping of some SiO masers. We qualitatively discuss this effect with consideration to the IR overlaps at 8 mu m between the various SiO isotopomers and between (28) SiO and water vapor
Tables 5 to 16 are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/Abstract.html.
Bujarrabal Valentin
Cernicharo Jose
Gonzalez-Alfonso Eduardo
Pardo Juan Ramon
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