Multifrequency observations of OV236 (1921-293) reveal an unusual spectrum

Details Multifrequency observations of OV236 (1921-293) reveal an unusual spectrum Multifrequency observations of OV236 (1921-293) reveal an unusual spectrum

May 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983natur.303...46g&link_type=abstract

Nature (ISSN 0028-0836), vol. 303, May 5, 1983, p. 46, 47. Research supported by the Science and Engineering Research Council.

Astronomy and Astrophysics

Astronomy

6

Astronomical Spectroscopy, Bl Lacertae Objects, Quasars, Radio Sources (Astronomy), Emission Spectra, Infrared Astronomy, Millimeter Waves

Scientific paper

Flux measurements of the BL Lac object OV236 (1921-293) with the UK IR telescope at Mauna Kea in September 1982 are reported. The data were taken at J, H, K, 10, 20, 800, and 1100 microns over a four day period in order to characterize the millimeter spectrum. The FWHM beamwidths were 58 and 65 arcsec at 800 and 1100 microns. Rises in the spectrum at 800 and 20 microns indicated a peak in the submillimeter region, although no corroborating evidence could be found to identify the peak with thermal reradiation. Further observations at all wavelengths over a period of time are recommended to characterize the evolution of the spectral shape.

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