| Issue |
A&A
Volume 558, October 2013
|
|
|---|---|---|
| Article Number | A68 | |
| Number of page(s) | 8 | |
| Section | Catalogs and data | |
| DOI | https://doi.org/10.1051/0004-6361/201322016 | |
| Published online | 04 October 2013 | |
Red-channel (6000−8000 Å) nuclear spectra of 376 local galaxies⋆
1 Dipartimento di Fisica G. OcchialiniUniversità di Milano-Bicocca, Piazza della Scienza 3, 20126 Milano, Italy
e-mail: giuseppe.gavazzi@mib.infn.it; massimo.dotti@mib.infn.it; g.consolandi1@campus.unimib.it
2 Universitäts-Sternwarte München, Scheinerstrasse 1, 81679 München, Germany
e-mail: mfossati@mpe.mpg.de
3 Max-Planck-Institut für Extraterrestrische Physik, Giessenbachstrasse, 85748 Garching, Germany
4 Centre for Astrophysics and Supercomputing, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
e-mail: gsavorgn@astro.swin.edu.au
5 Osservatorio astronomico di Bologna, via Ranzani 1, 40127 Bologna, Italy
e-mail: roberto.gualandi@oabo.inaf.it; ivan.bruni@oabo.inaf.it
Received: 4 June 2013
Accepted: 5 August 2013
We obtained long-slit optical spectra of the nuclear regions of 376 galaxies in the local Universe using the 1.5 m Cassini telescope of Bologna Observatory. Of these spectra, 164 were either never taken before by the Sloan Digital Sky Survey (SDSS), or given by the Nasa Extragalactic Database (NED). With these new spectra, we contribute investigating the occurrence of active galactic nuclei (AGNs). Nevertheless, we stress that the present sample is by no means complete, thus, it cannot be used to perform any demographic study. Following the method used in a previous work, we classify the nuclear spectra using a six bin scheme: SEY (Seyfert), sAGN (strong AGN), and wAGN (weak AGN) represent active galactic nuclei of different levels of activity; HII accounts for star-forming nuclei; RET (retired) and PAS (passive) refer to nuclei with poor or no star-formation activity. The spectral classification is performed using the ratio of λ 6584 [NII] to Hα lines and the equivalent width (EW) of Hα versus [NII] /Hα (WHAN diagnostic introduced by Cid Fernandes and collaborators) after correcting Hα for underlying absorption. The obtained spectra are made available in machine readable format via the Strasbourg Astronomical Data Center (CDS) and NED.
Key words: galaxies: active / galaxies: nuclei / galaxies: Seyfert
Full Tables 3 and 4 and Fig. 4 (in FITS format) are only available at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/558/A68
© ESO, 2013
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