The prediction of the spectral properties of BL Lac samples

Details The prediction of the spectral properties of BL Lac samples The prediction of the spectral properties of BL Lac samples

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996mnras.279...72m&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 279, Issue 1, pp. 72-78.

Astronomy and Astrophysics

Astronomy

4

Methods: Statistical, Galaxies: Active, Bl Lacertae Objects: General, Infrared: Galaxies

Scientific paper

The distribution of infrared colours (J-K) of radio-and X-ray-selected BL Lacs is predicted and compared with the observations of two existing samples of BL Lac objects. We make use of the `recognition analysis' formalism introduced in previous papers and show how the infrared spectral properties for BL Lacs are well predicted by adding a galaxy and BL Lac component in different proportions. We also calculate the distributions of the ratio of galaxy light to BL Lac light for the two samples of BL Lac objects and find that the criteria traditionally used for the selection of BL Lac samples miss objects, many of which could be found if smaller observing apertures were used in the identification process.

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