J/ApJ/671/1355      EGRET blazars in VIPS                    (Taylor+, 2007)
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Query from: http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=J/ApJ/671/1355

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Beginning of ReadMe : J/ApJ/671/1355 EGRET blazars in VIPS (Taylor+, 2007) ================================================================================ Characteristics of EGRET blazars in the VLBA Imaging and Polarimetry Survey (VIPS). Taylor G.B., Healey S.E., Helmboldt J.F., Tremblay S., Fassnacht C.D., Walker R.C., Sjouwerman L.O., Pearson T.J., Readhead A.C.S., Weintraub L., Gehrels N., Romani R.W., Michelson P.F., Blandford R.D., Cotter G. <Astrophys. J., 671, 1355-1364 (2007)> =2007ApJ...671.1355T ================================================================================ ADC_Keywords: Radio sources ; QSOs ; BL Lac objects ; Redshifts Keywords: catalogs - galaxies: active - galaxies: jets - galaxies: nuclei - radio continuum: galaxies - surveys - techniques: image processing Abstract: We examine the radio properties of EGRET-detected blazars observed as part of the VLBA Imaging and Polarimetry Survey (VIPS). VIPS has a flux limit roughly an order of magnitude below the MOJAVE survey and most other samples that have been used to study the properties of EGRET blazars. At lower flux levels, radio flux density does not directly correlate with gamma-ray flux density. We do find that the EGRET-detected blazars tend to have higher brightness temperatures, greater core fractions, and possibly larger than average jet opening angles. A weak correlation is also found with jet length and with polarization. All of the well-established trends can be explained by systematically larger Doppler factors in the gamma-ray-loud blazars, consistent with the measurements of higher apparent velocities found in monitoring programs carried out at radio frequencies above 10 GHz. Description: We have compared the latest EGRET catalog (Hartman et al. 1999, Cat. J/ApJS/123/79) to the recently compiled Combined Radio All-Sky Targeted Eight GHz Survey (CRATES; Healey et al. 2007, Cat. J/ApJS/171/61), and from the intersection compiled a sample of 173 candidate EGRET sources at |b|>10deg.

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