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: | , , , , |
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| Formato: | Objeto de conferencia |
| Lenguaje: | Inglés |
| Publicado: |
2015
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/168106 |
| Aporte de: |
| Sumario: | 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. |
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