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Active and star‐forming galactic nuclei in WINGS: A preliminary report
Author(s) -
Marziani P.,
D' Onofrio M.,
Bettoni D.,
Fasano G.,
Fritz J.,
Poggianti B.M.,
Cava A.
Publication year - 2013
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.201211869
Subject(s) - physics , active galactic nucleus , astrophysics , galaxy , star cluster , astronomy , line (geometry) , emission spectrum , cluster (spacecraft) , population , spectral line , geometry , mathematics , demography , sociology , computer science , programming language
Abstract We analyzed the spectra collected under the wide‐field nearby galaxy clusters survey (WINGS) to reveal emission lines in cluster galaxies. After removing stellar emission with dedicated population synthesis models we found evidence of faint emission line activity in a sizable number of sources. Diagnostic diagrams were used to define or at least constrain the origin of the emission line activity. Cross‐correlation with radio surveys is also being used for the identification of “true” active nuclei. We report the discovery of a previously unknown Seyfert 1 nucleus, WINGS J230945.81+072431.0, and preliminary results on prevalence and basic properties of the active and star forming galaxies we identified. (© 2013 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)