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Properties of a sample of Seyfert 1 galaxies
We present a statistical study of a large, homogeneously analyzed sample of narrow-line Seyfert 1 (NLS1) galaxies, accompanied by a comparison sample of broad-line Seyfert 1... -
Emission-line objects from ALFALFA H{alpha} survey
During a wide-field narrowband H{alpha} imaging survey, we noted the presence of numerous isolated emission-line point sources in the data. These objects could represent... -
Matched SDSS and FIRST Sample
The question as to whether the distribution of radio loudness in active galactic nuclei (AGNs) is actually bimodal has been discussed extensively in the literature. Furthermore,... -
Morphology of narrow-line Seyfert 1 galaxies
We present a study of the nuclear morphology of a sample of narrow- and broad-line Seyfert 1 galaxies (NLS1s and BLS1s, respectively) based on broadband images in the Hubble... -
Narrow line Seyfert 1 galaxies in the FBQS
We present results from the analysis of the optical spectra of 47 radio-selected narrow-line Seyfert 1 (NLS1) galaxies. These objects are a subset of the First Bright Quasar... -
KISS H{alpha}-selected survey list 3
The KPNO International Spectroscopic Survey (KISS) is an objective-prism survey designed to detect extragalactic emission-line objects. It combines many of the features of... -
1.4GHz emission of KISS emission-line galaxies
We have searched the Faint Images of the Radio Sky at Twenty centimeters (FIRST, ) and the NRAO VLA Sky Survey (NVSS, ) 1.4GHz radio surveys for sources that are coincident with... -
KISS H{alpha} survey list 2
The KPNO International Spectroscopic Survey (KISS) is an objective-prism survey for extragalactic emission-line objects. It combines many of the features of previous slitless... -
Seyfert population in SSRS2
The magnitude-limited catalog of the Southern Sky Redshift Survey (SSRS2, Cat. ) is used to characterize the properties of galaxies hosting active galactic nuclei (AGNs). Using... -
Quasars in the Coma cluster
This is the second paper of the series about our Multiwavelength Quasar Survey. We present the observational results for the X-ray candidates in the field of the Coma Cluster.... -
KISS III. [O III]-selected survey list
The KPNO International Spectroscopic Survey (KISS) is an objective-prism survey for extragalactic emission-line objects. It combines many of the features of previous slitless... -
KISS H{alpha} survey list 1
The KPNO International Spectroscopic Survey (KISS) is a new objective-prism survey for extragalactic emission-line objects. It combines many of the features of previous slitless... -
NGC 5548 BR photometry
Deep Hubble Space Telescope Wide Field Camera (WFC-1) imaging of a region 3.7' east of the V=13mag Seyfert galaxy NGC 5548 in the F555W and F785LP bands, and deep ground-based V... -
Rotation curves of Seyfert galaxies with companions
This paper presents imaging and optical spectroscopy of paired Seyfert galaxies and their companions. The aim is to seek common properties of Seyfert galaxies in interacting... -
AGNs with composite spectra. II.
We have compiled from the literature 88 emission-line galaxies for which the published line-ratios give indication of a "transition spectrum"; selected objects are located north... -
UV variability of Fairall-9
This is a study of the UV variability of the galaxy Fairall-9 between 1978 and 1991. Table 1 shows the UV continuum fluxes measured in three "line-free" windows centered at... -
The Hamburg/ESO survey for bright QSOs. II.
We report about the first phase of a wide-angle survey for bright QSOs (12.5<~B<~17.5) in the southern hemisphere, based on objective prism plates taken with the ESO... -
Warm IRAS sources. IV.
We present a list of objects observed to have extended line emission in our spectroscopic survey of infrared-warm AGN. Slit spectroscopic data were obtained for 225 galaxies... -
HST COS spectrum of I Zwicky 1
We present an analysis of the Hubble Space Telescope Cosmic Origins Spectrograph spectrum of IZw1 aiming to probe the absorbing medium associated with the active galactic... -
NIR lines for AGN up to z~3
Optical rest-frame spectroscopic diagnostics are usually employed to distinguish between star formation and active galactic nucleus (AGN) powered emission. However, this method...
