Hostname: page-component-586b7cd67f-r5fsc Total loading time: 0 Render date: 2024-12-01T01:12:56.918Z Has data issue: false hasContentIssue false
  • English
  • Français

NGC 4151: An Accurate Upper Limit to the Dimensions of the Central Continuum Source?

Published online by Cambridge University Press:  19 July 2016

Nicolaos H. Solomos
Nicolaos H. Solomos*
Affiliation:
Physics Dept., Hellenic Naval Academy, Piraeus- 17503, Greece

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Simultaneous (5672 Å and 3400–3900 Å)) optical continuum photometric observations of the Seyfert galaxy NGC4151, were carried out within ≤4 week periods, down to a time resolution of < 1hr. A new active phase (1990) is detected with onset and slope captured in 1989. Implications of the variability record from 1983, to 1990 (Fig-1), are discussed.

Type
Poster Contributions: Variability
Information
Symposium - International Astronomical Union , Volume 159: Multi-Wavelength Continuum Emission of AGN , 1994 , pp. 405 - 406
Copyright
Copyright © Kluwer 1994 

References

1. Maoz, D. et al. (1990): Ap. J. 351, 75.CrossRefGoogle Scholar
2. Meaburn, et al. (1985): in ‘Active Galactic Nuclei’ , Ed. Dyson, J., Manchester Univ. Press.Google Scholar
3. Solomos, et. al. (1990): A&A 229, 80.Google Scholar
4. Ulrich, M. (1991): in ‘Variability of Active Galaxies’, Eds. Duschl, W.J. et. al., LNP Vol. 377, Heidelberg.Google Scholar