A new strong maser - HCN

Details A new strong maser - HCN A new strong maser - HCN

Apr 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...176l..24g&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 176, no. 1, April 1987, p. L24-L26.

Astronomy and Astrophysics

Astrophysics

33

Astronomical Spectroscopy, Hydrocyanic Acid, Interstellar Masers, Stellar Envelopes, Hyperfine Structure, Line Spectra, Silicon Oxides, Spectral Line Width

Scientific paper

A strong maser line (≈75 Jy) has been observed in the C-rich circumstellar envelope CIT 6 at the frequency of the (0,2°,0) J = 1-0 line of HCN (energy 2050K above the ground state). This is the first strong maser ever observed in a C-rich circumstellar envelope. The line is particularly narrow (FWHM ≈ 1.0 km s-1). Its intensity is comparable to, albeit weaker than SiO masers. Its existence in CIT 6 could be related to the particular activity and structure in the vicinity of the photosphere.

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