SiO masers in OH/IR stars, proto-PN and PN (Nyman+ 1998)

Details SiO masers in OH/IR stars, proto-PN and PN (Nyman+ 1998) SiO masers in OH/IR stars, proto-PN and PN (Nyman+ 1998)

Jul 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997ycat..41270185n&link_type=abstract

VizieR On-line Data Catalog: J/A+AS/127/185. Originally published in: 1998A&AS..127..185N

Physics

Masers, Planetary Nebulae

Scientific paper

We present a search for SiO masers towards a sample of 126 objects including OH/IR stars, proto-planetary and planetary nebulae. All objects are classified as oxygen-rich, and most of them are associated with OH or H2O masers. SiO masers were found only in variable objects like the OH/IR stars and a few objects classified as proto-planetary nebulae, but with variable central stars that may be part of binary systems. In one object, OH 15.7+0.8, which appears to be varying irregularly and most likely recently left the AGB, an SiO maser was tentatively detected. Thus, we conclude that variability and SiO maser emission are closely linked, and that SiO masers disappear very soon after a star has reached the end of the AGB, when pulsation and mass loss cease. (3 data files).

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