Premium
Preliminary results on the study of the environment of a complete sample of Seyfert galaxies
Author(s) -
Salvato M.,
Rafanelli P.
Publication year - 1997
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.2113180411
Subject(s) - galaxy , physics , sky , astrophysics , sample (material) , control sample , redshift , astronomy , chemistry , food science , thermodynamics
The results of the study of the environment of a complete sample of Seyfert galaxies taken from the CfA Redshift Survey (Davis et al. 1983; Huchra et al. 1983) are shown. In particular we compare the distribution of the positions of all galaxies located within five diameters from each Seyfert galaxy of our sample with the angalogous distribution observed in a control sample of normal galaxies taken from the Merged Catalogue of Galaxies (hereafter MERCG) (Kogoshvili 1986). This research is based on the analysis of the digitized images of the “Digitized Sky Survey” and on the on‐line catalogues APM (Automatic Plate Measuring System) and APS (Automated Plate Scanner).