Spectroscopic Monitoring of Active Galactic Nuclei from CTIO. II. IC 4329A, ESO 141-G55, Arakelian 120, and Fairall 9
1996; IOP Publishing; Volume: 469; Linguagem: Inglês
10.1086/177812
ISSN1538-4357
AutoresCláudia Winge, B. M. Peterson, M. G. Pastoriza, Thaisa Storchi‐Bergmann,
Tópico(s)Astrophysical Phenomena and Observations
Resumoview Abstract Citations (26) References (76) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Spectroscopic Monitoring of Active Galactic Nuclei from CTIO. II. IC 4329A, ESO 141-G55, Arakelian 120, and Fairall 9 Winge, Claudia ; Peterson, Bradley M. ; Pastoriza, Miriani G. ; Storchi-Bergmann, Thaisa 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 emission line fluxes, and the cross- correlation analysis indicates that the most likely delay between the variations of the 6225 A 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 obtained for 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. Publication: The Astrophysical Journal Pub Date: October 1996 DOI: 10.1086/177812 Bibcode: 1996ApJ...469..648W Keywords: GALAXIES: ACTIVE; GALAXIES: INDIVIDUAL ALPHANUMERIC: ESO 141-G55; GALAXIES: INDIVIDUAL ALPHANUMERIC: IC 4329A; GALAXIES: INDIVIDUAL NAME: ARAKELIAN 120; GALAXIES: INDIVIDUAL NAME: FAIRALL 9; GALAXIES: SEYFERT full text sources ADS | data products SIMBAD (6) NED (4) Related Materials (1) Part 1: 1995ApJ...445..680W
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