Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...309..822c&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 309, Oct. 15, 1986, p. 822-827.
Astronomy and Astrophysics
Astrophysics
57
Cosmic Noise, Cyanogen, Galactic Radiation, Stellar Spectra, Background Radiation, Line Spectra, Ophiuchi Clouds, Spectral Resolution
Scientific paper
Precise high-resolution measurements of the interstellar lines of CN near 3874 A toward the star Zeta Oph provide a new measurement of the cosmic background radiation temperature of 2.74 + or - 0.05 K at 2.64 mm and 2.75 (+0.24, -0.29) K at 1.32 mm. Using a spectral resolution of 156,000, the intrinsic width of these lines is found to be 19.0 + or - 0.5 mA, which is substantially smaller than previously reported and requires larger saturation corrections than used in previous work to determine the CN excitation temperature.
Crane Philippe
Danks Anthony C.
Hegyi Dennis J.
Mandolesi Nazzareno
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