246 datasets found

Keywords: seyfert galaxies

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  • Monitoring Mkn 279 in BVRI and H{beta} fluxes

    Mid-infrared images of the Seyfert 1 galaxy Mrk 279 obtained with the ISO satellite are presented together with the results of a one-year monitoring campaign of the...
  • Seyferts in galaxy pairs and groups

    The occurrence of Seyfert galaxies in 6 samples representative of different cosmological environments (i.e. isolated pairs, compact and loose groups) is analysed. To avoid...
  • Radio galaxies in the 2dFGRS

    We use redshift determinations and spectral analysis of galaxies in the 2dF Galaxy Redshift Survey () to study the properties of local radio sources with S>=1mJy. 557 objects...
  • Universidad Complutense de Madrid list 1

    A low dispersion objective-prism survey for low-redshift emission-line galaxies (ELGs) is being carried out by the University Complutense de Madrid with the Schmidt telescope at...
  • Properties of ICRF3 sources from SDSS spectra

    Despite their importance for astrometry and navigation, the active galactic nuclei (AGNs) that comprise the International Celestial Reference Frame (ICRF) are relatively poorly...
  • Iron template spectrum from Mrk493 HST/STIS obs.

    We present a new empirical template for iron emission in active galactic nuclei (AGNs) covering the 4000-5600{AA} range. The new template is based on a spectrum of the...
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