Disk structure and nuclear activity in Seyfert 1 galaxies

Journal Article · Thu May 15 00:00:00 EDT 1980 · Astrophys. J., Lett. Ed.; (United States)

DOI:https://doi.org/10.1086/183244· OSTI ID:5057598

Su, H J; Simkin, S M

We have investigated the relationships between Balmer line width, inclination to the line of sight, and morphological class for 38 Seyfert 1 galaxies. Only one set of parameters shows a strong correlation: the width of the Balmer lines in Seyfert 1 galaxies is related to the morphological class (i.e., disk structure) of these objects. This relationship seems to show continuity between spiral Seyfert galaxies and extended, broad-line radio galaxies (''N'' radio galaxies), which suggests that some Seyfert galaxies may evolve into extended radio sources. The random relationship between the width of the Balmer lines and inclination of the line of sight of Seyfert galaxies suggests that the broadening mechanism for these lines is spherically symmetric.

• Research Organization: Mount Stromlo and Siding Spring Observatories, Research School of Physical Sciences, Australian National University
• OSTI ID: 5057598
• Journal Information: Astrophys. J., Lett. Ed.; (United States), Vol. 238:1
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
SEYFERT GALAXIES
BALMER LINES
GALAXY NUCLEI
COSMIC RADIO SOURCES
LINE BROADENING
LINE WIDTHS
RADIO GALAXIES
GALAXIES
640103* - Astrophysics & Cosmology- Quasi-Stellar
Radio
& X-Ray Sources- (-1987)