Oke, J. B. (1963) Absolute Energy Distribution in the Optical Spectrum of 3C 273. Nature, 197 (4872). pp. 1040-1041. ISSN 0028-0836. doi:10.1038/1971040b0. https://resolver.caltech.edu/CaltechAUTHORS:20190507-145525860
Full text is not posted in this repository. Consult Related URLs below.
Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20190507-145525860
Abstract
The radio source 3C 273 has recently been identified with a thirteenth magnitude star-like object. The details are given by M. Schmidt in the preceding communication. Since 3C 273 is relatively bright, photoelectric spectrophotometric observations were made with the 100-in. telescope at Mount Wilson to determine the absolute distribution of energy in the optical region of the spectrum; such observations are useful for determining if synchrotron radiation is present. In the wave-length region between 3300 Å and 6000 Å measurements were made in 16 selected 50-Å bands. Continuous spectral scans with a resolution of 50 Å were also made. The measurements were placed on an absolute-energy system by also observing standard stars whose absolute energy distributions were known. The accuracy of the 16 selected points is approximately 2 per cent. The strong emission features found by Schmidt were readily detected; other very faint features not apparent on Schmidt's spectra may be present.
Item Type: | Article | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Related URLs: |
| |||||||||
Additional Information: | © Nature Publishing Group 1963. | |||||||||
Issue or Number: | 4872 | |||||||||
DOI: | 10.1038/1971040b0 | |||||||||
Record Number: | CaltechAUTHORS:20190507-145525860 | |||||||||
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20190507-145525860 | |||||||||
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
ID Code: | 95322 | |||||||||
Collection: | CaltechAUTHORS | |||||||||
Deposited By: | George Porter | |||||||||
Deposited On: | 07 May 2019 23:05 | |||||||||
Last Modified: | 16 Nov 2021 17:11 |
Repository Staff Only: item control page