Extremely red compact radio sources - The empty field objects

Details Extremely red compact radio sources - The empty field objects Extremely red compact radio sources - The empty field objects

Aug 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...247..780b&link_type=abstract

Astrophysical Journal, Part 1, vol. 247, Aug. 1, 1981, p. 780-786. NASA-NSF-supported research.

Astronomy and Astrophysics

Astronomy

19

Astronomical Photometry, Astronomical Spectroscopy, Bl Lacertae Objects, Extragalactic Radio Sources, Infrared Astronomy, Quasars, Infrared Telescopes, Red Shift, Spectral Energy Distribution, Spectral Resolution

Scientific paper

Radiation of 10 microns has been detected from 1413+135, one of the very red objects discovered by Rieke, Lebofsky, and Kinman (1979) at near-infrared wavelengths. The spectrum of this object flattens at wavelengths longer than 2.2 microns. Upper limits are also given for the 10-micron emission from 2255+14, 0026+34, and 0406+121. Photometry between 1.25 and 2.2 microns confirms the variability of 1413+135, 2255+41, and 0406+121. Five percent resolution spectra of 1413+135 and 0406+121 between 1.5 and 2.4 microns show no emission or absorption lines. The spectral data rule out the possibility that 1413+135 is a quasar with normal line strengths and a redshift less than 1.3 and greater than 4. The lack of features of the 1.5-2.4-micron spectra, the rapid variability, and the overall shape of the radio, infrared, and X-ray energy distributions are consistent with a BL Lac nature for these objects.

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