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The NGC 1275 Galaxy Nucleus Emission Spectrum Variability at Various Stages of Activity
Published online by Cambridge University Press: 07 August 2017
Extract
Emission lines variability of Seyfert galaxy NGC 1275 nucleus in the scales of years and months has been observed since 1971 (I. Pronik, 1980). The photoelectric observations of I. Pronik and N. Merkulova (1987) show, that the variability in Hβ and 4959+ 5007 A [OIII] lines occurs also in the time scale of several days. Hereinafter the analysis of Hβ and [OIII] variable emission lines within months is presented according to photographic observations carried out from 1971 till 1982 by I. Pronik (1980), V. Doroshenko and V. Terebizh (1983) and K. Chuvaev (1985).
- Type
- Part 2: BLR and Variability
- Information
- Symposium - International Astronomical Union , Volume 134: Active Galactic Nuclei , 1989 , pp. 88 - 89
- Copyright
- Copyright © Kluwer 1989