A precise measurement of the cosmic background radiation at 1.32 millimeters

Abstract

view Abstract Citations (38) References (25) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A Precise Measurement of the Cosmic Background Radiation at 1.32 Millimeters Palazzi, E. ; Mandolesi, N. ; Crane, Philippe ; Kutner, Marc L. ; Blades, J. C. ; Hegyi, Dennis J. Abstract A precise value of the cosmic background radiation temperature at 1.32 mm has been determined from the interstellar absorption lines of the CN molecule toward HD 154368. Equivalent widths for CN and ^13^CN in the main cloud are reported. A very weak secondary cloud has been discovered. Millimeter observations at 2.64 mm revealed weak CN emission from the main cloud with T^*^_R_= 19.0 +/- 5.1 mK. Thus there is some local excitation of CN. Correcting for this yields T_CBR_ = 2.832 +/- 0.072 K at 1.32 mm which when combined with the result of Meyer et al. gives the T_CBR_ = 2.831 +/- 0.056 K at 1.32 mm. At 2.64 mm, we find T_CBR_ = 2.834 +/- 0.085 K. Publication: The Astrophysical Journal Pub Date: July 1990 DOI: 10.1086/168886 Bibcode: 1990ApJ...357...14P Keywords: Absorption Spectra; Cn Emission; Interstellar Gas; Line Spectra; Radiation Measurement; Relic Radiation; Atmospheric Correction; Black Body Radiation; Rocket-Borne Instruments; Astrophysics; COSMIC BACKGROUND RADIATION; INTERSTELLAR: MOLECULES; STARS: INDIVIDUAL HENRY DRAPER NUMBER: HD 154368 full text sources ADS | data products SIMBAD (2)