Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...175..164b&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 175, no. 1-2, March 1987, p. 164-172.
Astronomy and Astrophysics
Astrophysics
51
Continuous Radiation, Infrared Radiation, Interstellar Masers, Silicon Oxides, Stellar Radiation, Late Stars, Mira Variables, Molecular Spectra, Optical Pumping, Stellar Envelopes, Supergiant Stars
Scientific paper
The authors present observations of SiO masers at 43 GHz (υ = 1, 2; J = 1-0), made with the Yebes radiotelescope. They report the detection of 11 new SiO stars and the confirmation of 1 previous tentative detection, in a total of 64 observed objects. The analysis of the SiO and middle IR measurements yields a very good correlation between maser intensity and 8 μm continuum for oxygen-rich Mira variables and late-type supergiants. This correlation argues in favour of the radiative pump of the maser, against collisional models, and is also useful in the characterization of the SiO maser emitters: the comparison of the respective regions occupied by these groups of objects in the SiO-IR diagram shows that the emission of the C stars is ⪆100 times weaker than that of the oxygen-rich objects, and that the S stars seem to be an intermediate case, being placed between the C and M distributions.
Bujarrabal Valentin
del Romero A.
Planesas Pere
No associations
LandOfFree
SiO maser emission in evolved stars - Relation to IR continuum does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with SiO maser emission in evolved stars - Relation to IR continuum, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and SiO maser emission in evolved stars - Relation to IR continuum will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1451537