229 datasets found

Keywords: seyfert galaxies

Filter Results
  • BASS. XXIV. DR2 spectral line measurements of AGNs

    We present the second catalog and data release of optical spectral line measurements and active galactic nucleus (AGN) demographics of the BAT AGN Spectroscopic Survey, which...
  • BASS. XXII. The Swift/BAT AGN Sp. Survey DR2 cat.

    We present the active galactic nucleus (AGN) catalog and optical spectroscopy for the second data release of the Swift BAT AGN Spectroscopic Survey (BASS DR2). With this DR2...
  • 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...
  • SDSS Seyfert 1.9 galaxies with Ha emission line fit

    The traditional classification for a subclass of the Seyfert galaxies is visual inspection or using a quantity defined as a flux ratio between the Balmer line and forbidden...
  • WISE MIR variability in gamma-ray Seyfert 1 gal.

    Fermi-LAT's detection of {gamma}-rays from narrow-line Seyfert 1 galaxies (NLS1s) has received increasing attention. Understanding these {gamma}-NLS1s is of interest because...
  • SEAMBHs XII. Reberberation mapping for 15 PG QSOs

    In this work, we present the first results of the long-term high-cadence spectroscopic monitoring of 15 PG quasars with relatively strong FeII emission, as a part of a broader...
  • BAT AGN Spectroscopic Survey. XX. Molecular gas

    We present the host-galaxy molecular gas properties of a sample of 213 nearby (0.01<z<0.05) hard-X-ray-selected active galactic nucleus (AGN) galaxies, drawn from the...
  • S7 observations with WiFeS of active galaxies

    Here we describe the Siding Spring Southern Seyfert Spectroscopic Snapshot Survey (S7) and present results on 64 galaxies drawn from the first data release. The S7 uses the Wide...
  • Atlas of HST STIS spectra of Seyfert galaxies

    We present a compilation of spectra of 101 Seyfert galaxies obtained with the Hubble Space Telescope (HST) Space Telescope Imaging Spectrograph (STIS), covering the UV and/or...
  • 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...
  • Morphology of 12micron Seyfert Galaxies

    We present 263 optical and near-infrared (NIR) images for 42 1s and 48 Seyfert 2s, selected from the Extended 12{mu}m Galaxy Sample. Elliptically averaged profiles are derived...
  • 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...
  • Chandra X-ray sources of NGC 1068

    We present an analysis of the compact X-ray source population in the Seyfert 2 galaxy NGC 1068, imaged with a 50ks Chandra observation. We find a total of 84 compact sources on...
You can also access this registry using the API (see API Docs).