Optical spectroscopic and photometric observations of unclassified Active Galactic Nuclei in the Fermi-2LAC catalogue

The Fermi-LAT 2-year Source catalogue (2LAC) contains approximately 157 sources which are classified as AGN of unknown type (AGU) with no determined redshifts. We have identified a subset of these AGUsfor follow-up studies aiming to classify them and determine redshifts, utilizing South African obse...

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Autores principales: Klindt, Lizelke, Van Soelen, Brian, Meintjes, Pieter, Väisänen, Petri, Kniazev, Alexei
Formato: Objeto de conferencia
Lenguaje:Inglés
Publicado: 2015
Materias:
Ciencias Astronómicas
Fermi-2LAC catalogue
AGN of unknown type
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/168106
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-168106
record_format dspace
spelling I19-R120-10915-1681062024-07-29T20:02:25Z http://sedici.unlp.edu.ar/handle/10915/168106 Optical spectroscopic and photometric observations of unclassified Active Galactic Nuclei in the Fermi-2LAC catalogue Klindt, Lizelke Van Soelen, Brian Meintjes, Pieter Väisänen, Petri Kniazev, Alexei 2015-10 2016 2024-07-29T14:48:08Z en Ciencias Astronómicas Fermi-2LAC catalogue AGN of unknown type The Fermi-LAT 2-year Source catalogue (2LAC) contains approximately 157 sources which are classified as AGN of unknown type (AGU) with no determined redshifts. We have identified a subset of these AGUsfor follow-up studies aiming to classify them and determine redshifts, utilizing South African observatories. Optical spectroscopic observations have been performed with the Southern African Large Telescope (SALT) and short term photometric variability of the sources was studied using the SAAO 1.9-m telescope. The results for five candidates are discussed. The spectra are mainly featureless as expected for BL Lacs, however, potential spectral features are present for some sources. Similarly, photometric monitoring shows potential variability, for certain sources. Facultad de Ciencias Astronómicas y Geofísicas Objeto de conferencia Objeto de conferencia http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf 149-152
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
Fermi-2LAC catalogue
AGN of unknown type
spellingShingle Ciencias Astronómicas
Fermi-2LAC catalogue
AGN of unknown type
Klindt, Lizelke
Van Soelen, Brian
Meintjes, Pieter
Väisänen, Petri
Kniazev, Alexei
Optical spectroscopic and photometric observations of unclassified Active Galactic Nuclei in the Fermi-2LAC catalogue
topic_facet Ciencias Astronómicas
Fermi-2LAC catalogue
AGN of unknown type
description The Fermi-LAT 2-year Source catalogue (2LAC) contains approximately 157 sources which are classified as AGN of unknown type (AGU) with no determined redshifts. We have identified a subset of these AGUsfor follow-up studies aiming to classify them and determine redshifts, utilizing South African observatories. Optical spectroscopic observations have been performed with the Southern African Large Telescope (SALT) and short term photometric variability of the sources was studied using the SAAO 1.9-m telescope. The results for five candidates are discussed. The spectra are mainly featureless as expected for BL Lacs, however, potential spectral features are present for some sources. Similarly, photometric monitoring shows potential variability, for certain sources.
format Objeto de conferencia
Objeto de conferencia
author Klindt, Lizelke
Van Soelen, Brian
Meintjes, Pieter
Väisänen, Petri
Kniazev, Alexei
author_facet Klindt, Lizelke
Van Soelen, Brian
Meintjes, Pieter
Väisänen, Petri
Kniazev, Alexei
author_sort Klindt, Lizelke
title Optical spectroscopic and photometric observations of unclassified Active Galactic Nuclei in the Fermi-2LAC catalogue
title_short Optical spectroscopic and photometric observations of unclassified Active Galactic Nuclei in the Fermi-2LAC catalogue
title_full Optical spectroscopic and photometric observations of unclassified Active Galactic Nuclei in the Fermi-2LAC catalogue
title_fullStr Optical spectroscopic and photometric observations of unclassified Active Galactic Nuclei in the Fermi-2LAC catalogue
title_full_unstemmed Optical spectroscopic and photometric observations of unclassified Active Galactic Nuclei in the Fermi-2LAC catalogue
title_sort optical spectroscopic and photometric observations of unclassified active galactic nuclei in the fermi-2lac catalogue
publishDate 2015
url http://sedici.unlp.edu.ar/handle/10915/168106
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