Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...297..119m&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 297, Oct. 1, 1985, p. 119-132. NASA-NSF-supported research.
Astronomy and Astrophysics
Astrophysics
80
Cosmic Rays, Cyanogen, Interstellar Matter, Relic Radiation, Temperature Measurement, Visible Spectrum, Astronomical Spectroscopy, Big Bang Cosmology, Black Body Radiation, Molecular Clouds, Molecular Excitation
Scientific paper
The authors present very precise (S/N > 2000) observations of the 3874 Å band of interstellar CN toward ζ Per and ο Per. In the ζ Oph, ζ Per, and ο Per lines of sight, the saturation-corrected CN line strengths yield respective excitation temperatures of 2.72±0.05K, 2.76±0.05K, and 2.78±0.07K for the J = 0-1 rotational transition at 2.64 mm. The excellent agreement among these temperatures confirms the expectation that the cosmic microwave background radiation (CMB) is primarily responsible for populating the excited rotational levels of interstellar CN. With small corrections for the local CN excitation due to electron impact, the excitation temperatures toward ζ Oph, ζ Per, and ο Per are all consistent with a CMB brightness temperature of 2.70±0.04K at 2.64 mm.
Jura Michael
Meyer David M.
No associations
LandOfFree
A precise measurement of the cosmic microwave background temperature from optical observations of interstellar CN 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 A precise measurement of the cosmic microwave background temperature from optical observations of interstellar CN, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A precise measurement of the cosmic microwave background temperature from optical observations of interstellar CN will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1545563