Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...343l...1m&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 343, Aug. 1, 1989, p. L1-L4. Research supported by the Illinois S
Astronomy and Astrophysics
Astrophysics
49
Astronomical Spectroscopy, Cyanogen, Interstellar Matter, Millimeter Waves, Relic Radiation, Brightness Temperature, Electron Transitions, Molecular Excitation, Signal To Noise Ratios, Spectral Line Width, Vibrational Spectra
Scientific paper
High-SNR observations of the (1,0) and (0,0) vibrational bands of interstellar CN near 3580 and 3874 A toward HD 21483 are reported. The CN line strengths yield excitation temperatures of 2.83 + or - 0.09 and 2.76 + or - 0.07 K for the J = 1-2 and J = 0-1 rotational transitions at 1.32 mm and 2.64 mm. It is noted that in the absence of local CN excitation, these values represent the brightness temperatures of the cosmic background radiation (CMB) at these wavelengths. No CN emission is noted at 2.64 mm in the HD 21483 line of sight, setting a 2-sigma upper limit of 0.11 K on the contribution of local processes to the J = 0-1 excitation temperature.
Hawkins Isabel
Meyer David M.
Roth Katherine C.
No associations
LandOfFree
A precise CN measurement of the cosmic microwave background temperature at 1.32 millimeters 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 CN measurement of the cosmic microwave background temperature at 1.32 millimeters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A precise CN measurement of the cosmic microwave background temperature at 1.32 millimeters will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1514982