Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996apj...461l.107t&link_type=abstract
Astrophysical Journal Letters v.461, p.L107
Astronomy and Astrophysics
Astronomy
8
Magnetic Fields, Masers, Polarization, Stars: Formation
Scientific paper
Polarimetry observations of 28SiO ( v = 0, 1, and 2, J = 1--0) emission lines from a massive-star--forming region, Orion-KL IRc2, were made using the Nobeyama 45 m telescope. The I spectrum of 28SiO ( v = 0, J = 1--0) emission has a double-peaked line profile which is similar to those of the v = 1 and 2 emissions. We have detected highly linear polarized, up to p = 80%, 28SiO ( v = 0, J = 1--0) emission at the blueshifted peak. This provides strong evidence of ground vibrational state maser emission of 28SiO ( v = 0, J = 1--0).
Handa Toshihiro
Kasuga Toshihiro
Murata Yoshitaka
Ohta Eiji
Tsuboi Masato
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