Extinction, profile asymmetry, and tidal effects in Seyfert and starburst galaxies

Journal Article · Mon Aug 01 04:00:00 EDT 1988 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/166595· OSTI ID:6674020

Dahari, O; De robertis, M M

Possible correlations between luminosity, extinction, and morphological properties of 246 Seyfert and starburst galaxies are investigated. It is shown that the asymmetry of the forbidden O III 5007 A profile is correlated with the signature of dust in both Seyfert types, and therefore establishes a direct connection between them. A positive correlation is found between soft X-ray luminosities and optical reddening for Seyfert 2's and a negative correlation for Seyfert 1's. These and other correlations are discussed in the context of current models of active nuclei. No statistically significant differences are found between Seyferts with and without companions, except that interacting Seyfert 2's have excess infrared and radio-continuum emission. 58 references.

• Research Organization: Space Telescope Science Institute, Baltimore, MD (USA); York Univ., Downsview (Canada)
• OSTI ID: 6674020
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 331; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BASIC INTERACTIONS
CORRELATIONS
COSMIC DUST
DUSTS
ELECTROMAGNETIC RADIATION
FAR INFRARED RADIATION
GALAXIES
GALAXY NUCLEI
GRAVITATIONAL INTERACTIONS
INFRARED RADIATION
INTERACTIONS
IONIZING RADIATIONS
LUMINOSITY
MORPHOLOGY
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RADIATIONS
SEYFERT GALAXIES
SOFT X RADIATION
X RADIATION