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Spetroscopic monitoring of active galactic nuclei from CTIO. II. IC 4329A, ESO 141-G55, Arakelian 120, and Fairall 9
dc.contributor.author | Peterson, Bradley M. | pt_BR |
dc.contributor.author | Pastoriza, Miriani Griselda | pt_BR |
dc.contributor.author | Storchi-Bergmann, Thaisa | pt_BR |
dc.contributor.author | Winge, Claudia | pt_BR |
dc.date.accessioned | 2015-01-07T02:10:39Z | pt_BR |
dc.date.issued | 1996 | pt_BR |
dc.identifier.issn | 0004-637X | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/108775 | pt_BR |
dc.description.abstract | The results of an intensive monitoring campaign on the Seyfert 1 galaxies IC 4329A and ESO 141-G55 are presented. Variability was detected in both continuum and broad e issjon line fluxes, and the cross-correlation analysis indicates that the most likely delay between the vanahons of the 6225 Å continuum and the response of the Hβ and Hα emission lines for IC 4329A is ~15-25 days. For ESO 141-G55, the time-series analysis was inconclusive, and we could not obtain a clear cross-correlation signal between the lines and continuum light curves. We also present new data obtamefor AKN 120 and Fairall 9, consisting of two sets of optical spectra taken ~4 months apart. Both objects underwent not only significant flux variability (by up to a factor of ~2) in this interval but also strong Hα and Hβ profile variations. | en |
dc.format.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | The astrophysical journal. Chicago. Vol. 469, no. 2, pt. 1 (Oct. 1996), p. 648-661 | pt_BR |
dc.rights | Open Access | en |
dc.subject | Espectros astronômicos | pt_BR |
dc.subject | Galaxies: active-galaxies: individual (IC 4329A, ESO 141-G55, Arakelian 120, Fairall 9) | en |
dc.subject | Galaxias seyfert | pt_BR |
dc.subject | Galaxies: seyfert | en |
dc.subject | Galáxias ativas | pt_BR |
dc.title | Spetroscopic monitoring of active galactic nuclei from CTIO. II. IC 4329A, ESO 141-G55, Arakelian 120, and Fairall 9 | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 000199631 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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