229 datasets found

Keywords: seyfert galaxies

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  • Hamburg/ESO survey for bright QSOs. III.

    Appendix to the above paper, containing the two large tables A.1 and B.1 described in the paper. Table A.1 gives the basic properties of the 207 survey fields used to construct...
  • NGC 4151 line-continuum diagram sequences

    We present the first results of an 8-year spectroscopic monitoring of the Seyfert 1.5 galaxy NGC 4151 carried out with a CCD spectrograph at the 2.6-m Shajn Telescope of the...
  • NGC 5548 continuum light curve

    The variations of the [OIII]{lambda}5007 line profile in NGC 5548 are examine d from CCD spectra obtained at the Ohio State University and Crimean Astrophysic al Observatory in...
  • NGC 5548 Profile variability

    Optical emission line intensities of the variable Seyfert 1 galaxy NGC 5548 are presented.
  • An Ultraviolet Atlas of Quasar and Blazar Spectra

    This atlas contains the ultraviolet spectra of 70 quasars, blazars, and Seyfert 1 galaxies that were produced by combining over 100 low resolution spectra from the International...
  • Sasmirala Subarcsecond mid-infrared atlas of local AGN

    These FITS images were generated with the IDL package MIRphot [Asmus2014] by extraction (and combination) of the sub-images from the chopped/nodded total images from COMICS,...
  • Sasmirala Subarcsecond mid-infrared atlas of local AGN, Cone Search

    The Subarcsecond mid-infrared (MIR) atlas of local active galactic nuclei (AGN) is a collection of all available N- and Q-band images obtained at ground-based 8-meter class...
  • The Extended 12um galaxy sample

    The authors have used the IRAS data to compile a sample of 893 galaxies, including 118 Seyfert galaxies. Please refer to the "12micron.doc" (ascii) or "12micron.tex" (LaTeX)...
  • Far infrared Seyfert galaxies

    Confusing sources of Seyfert and HII galaxies in IRAS point source catalogue may be caused by companion objects of those galaxies. Comparison between confused galaxies and...
  • VLA NLS1s southern sample

    We present the results of new radio observations carried out with the Karl G. Jansky Very Large Array C-configuration at 5.5GHz for a sample of southern narrow-line Seyfert 1...
  • AGN photoionization of gas in companion galaxies

    We consider active galactic nucleus (AGN) photoionization of gas in companion galaxies (cross-ionization) as a way to sample the intensity of AGN radiation in both direction and...
  • 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...
  • IRAS 1Jy sample of ultraluminous galaxies. II.

    An R and K' atlas of the IRAS 1 Jy sample of 118 ultraluminous infrared galaxies (ULIGs) was presented in a companion paper (our Paper I, Kim et al., 2002, Cat. ). The present...
  • IRAS 1Jy sample of ultraluminous galaxies. I.

    An imaging survey of the IRAS 1Jy sample of 118 ultraluminous infrared galaxies was conducted at optical (R) and near-infrared (K') wavelengths using the University of Hawaii...
  • VLA radio continuum survey of Seyfert galaxies

    We have used the Very Large Array (VLA) to conduct a survey for radio continuum emission in the sample of 52 Seyfert nuclei selected from the optical spectroscopic galaxy...
  • Universidad Complutense de Madrid list 3

    A new low-dispersion objective-prism search for low-redshift (z<0.045) emission-line galaxies (ELGs) has been carried out by the Universidad Complutense de Madrid using the...
  • A diagnostic diagram for Seyfert 2 Galaxies

    We present and discuss a three-dimensional diagnostic diagram for Seyfert 2 galaxies obtained using X-ray and [O III] data on a large sample of objects (reported in the...
  • H II Regions in Nearby Seyfert Galaxies

    Continuum-subtracted Halpha images of 17 nearby Seyfert galaxies are presented. The images are calibrated astrometrically using the Hubble Space Telescope Guide Star Catalog...
  • Universidad Complutense de Madrid list 2

    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...
  • H II Regions in Seyfert galaxies. I.

    Data on positions, effective diameters, and absolute fluxes of H II regions on 21 Seyfert spiral galaxies are presented together with the H{alpha} + [N II] images and...
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