2,228 datasets found

A cross-identification of the southern-sky objects with the ROSAT All-Sky Survey (Cat. ) and Parkes-MIT-NRAO (PMN) Radio (5GHz) Survey (Cat. ) yields a list of 642 sources....

A list of 900 radio sources with positional accuracies better than 0.5" has been prepared from seventeen lists of radio source positions found in the literature. This...

We examine the redshifts of a comprehensive set of published Type Ia supernovae, and provide a combined, improved catalogue with updated redshifts. We improve on the original...

We present a catalogue of isolated field elliptical (IfE) galaxies drawn from the W1 field of the Canada-France-Hawaii Telescope Legacy Survey (CFHTLS). 228 IfEs were identified...

The completeness of sample is especially important for the research of quasar and using data in one wavelength, such as in radio, infrared, optical or X-ray selection, to make...

Bars are elongated structures that extend from the centre of galaxies, and about one-third of disk galaxies are known to possess bars. These bars are thought to form either...

Bright quasars, powered by accretion onto billion-solar-mass black holes, already existed at the epoch of reionization, when the Universe was 0.5-1 billion years old. How these...

Theoretical models for the production of relativistic jets from active galactic nuclei predict that jet power arises from the spin and mass of the central supermassive black...

We have collected an up-to-date sample of 123 superluminal sources (84 quasars, 27 BL Lac objects and 12 galaxies) and calculated the apparent velocities ({beta}app) for 224...

The redshift, central black hole mass and accretion rate are important parameters when studying the AGN evolution. The central black hole masses for 172 quasars and Seyfert...

We investigate the distribution and velocity field of galaxies situated in a band of 100x20 degrees centered on M87 and oriented along the Local supercluster plane. Our sample...

We consider a sample of 412 galaxies with radial velocities V_LG_<2500km/s situated in the sky region of RA=13.0h-19.0h, Dec=+10{deg}...+40{deg} between the Local Void and...

In the region of the sky limited by the coordinates RA=7.0h...12.0h, Dec=0{deg}...+20{deg} and extending from the Virgo Cluster to the South Pole of the Local Supercluster, we...

This catalog groups the 2442 galaxies making up the sample of distant galaxies prepared by the authors published as 3 papers in 2009: radio data (paper I, table1), photometric...

This catalog groups the 2442 galaxies making up the sample of distant galaxies prepared by the authors published as 3 papers in 2009: radio data (paper I, table1), photometric...

The paper presents a sample of double galaxies selected from The Surface Photometry Catalog of the ESO-Uppsala Galaxies (Cat. ) using the Karachentsev (1972: K72, Cat. )...

In the blazar catalog BZCAT the objects are divided into 4 types: BZB, BZQ, BZG, and BZU. In this paper BZG objects are studied in order to determine their physical nature. Of...

This is a detailed spectral classification of 96 active galaxies from the Veron-Cetty and Veron catalog (2010, Version 13, Cat. VII/258) of active galaxies and quasars. These...

This is a list of 111 blue stellar objects and individual active galaxies with excess ultraviolet continuum lying within 08h-17h in {alpha} and +45{deg} +49{deg} in {delta}...

We have searched 11304 quasars from the NVSS catalog for radio emission and obtained 2626 positive detections, of which 301 are new radio detections. We made statistical studies...