First Detection of the SiO (v = 3, J = 2-1) Maser Emission from χ Cygni

Details First Detection of the SiO (v = 3, J = 2-1) Maser Emission from χ Cygni First Detection of the SiO (v = 3, J = 2-1) Maser Emission from χ Cygni

Mar 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007apj...657..482c&link_type=abstract

The Astrophysical Journal, Volume 657, Issue 1, pp. 482-485.

Other

5

Stars: Circumstellar Matter, Masers, Stars: Late-Type, Stars: Variables: Other

Scientific paper

From the simultaneous observations of SiO v=3, J=2-1 and J=3-2 masers, SiO v=3, J=2-1 maser emission was detected for the first time toward the S-type Mira variable χ Cyg. The line was a single spike and was redshifted with respect to the stellar velocity. The SiO v=3, J=3-2 maser emission was not detected from this star. However, for the O-rich Mira variable TX Cam, SiO v=3, J=3-2 maser emission was detected, while v=3, J=2-1 maser was not detected. Two possible line overlaps were adopted as an explanation of these observational results.

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