Millimeter and submillimeter observations of 3C 273

Clegg, P. E., Gear, Walter Kieran ORCID: https://orcid.org/0000-0001-6789-6196, Ade, Peter A. R. ORCID: https://orcid.org/0000-0002-5127-0401, Robson, E. I., Smith, M. G., Nolt, I. G., Rodostitz, J. V., Glaccum, W., Harper, D. A. and Low, F. J. 1983. Millimeter and submillimeter observations of 3C 273. Astrophysical Journal 273 , pp. 58-63.

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Abstract

The first detection of 3C 273 (1226 + 023) at wavelengths of 107, 240, and 400 microns together with contemporary measurements at 800 microns, 1.1, 1.9, 3.3, and 8.9 mm, is reported. These observations show that the continuum spectrum of 3C 273 can be extrapolated smoothly from the submillimeter to the infrared with a constant spectral index. There is no evidence of thermal emission from dust. It is shown that the spectrum is consistent with optically thin synchrotron emission from a relativistic beam at a small angle to the line of sight.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QB Astronomy
Uncontrolled Keywords:	Astronomical Spectroscopy, Infrared Astronomy, Millimeter Waves, Quasars, Submillimeter Waves, Continuous Spectra, Radio Astronomy, Relativistic Particles, Synchrotron Radiation
Publisher:	American Astronomical Society
ISSN:	0004-637X
Last Modified:	21 Oct 2022 09:26
URI:	https://orca.cardiff.ac.uk/id/eprint/36469

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