28SiO in O-rich evolved stars (Pardo+ 1998)

Details 28SiO in O-rich evolved stars (Pardo+ 1998) 28SiO in O-rich evolved stars (Pardo+ 1998)

Nov 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997ycat..33290219p&link_type=abstract

VizieR On-line Data Catalog: J/A+A/329/219. Originally published in: 1998A&A...329..219P

Computer Science

Masers, Stars: O, Radio Lines

Scientific paper

We present simultaneous observations of several rotational lines of 28SiO 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 28SiO 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 μm between the various SiO isotopomers and between 28SiO and water vapor (1 data file).

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