Results 121 to 130 of about 6,087 (169)

The continuum of type 1 Seyfert galaxies. II - Separating thermal and nonthermal components

, 1987
N. P. Carleton, M. Elvis, G. Fabbiano, S. P. Willner, A. Lawrence, M. J. Ward   +5 more
openalex   +1 more source

Seyfert Galaxies: Classification, Morphology, Observations at Optical Wavelengths, Environmental Factors [PDF]

, 1987
Donald E. Osterbrock
openalex   +1 more source

Active galactic nuclei. [PDF]

Proc Natl Acad Sci U S A, 1999
Fabian AC.
europepmc   +1 more source

VLA observations of H I absorption in the nuclei of Seyfert and active galaxies

, 1982
J. M. Dickey
openalex   +1 more source

An exceptional change in the X-ray flux and spectrum of the Seyfert 1 galaxy E1615 + 061

, 1988
L. Piro, E. Massaro, G. C. Perola, D. Molteni   +3 more
openalex   +1 more source

Infrared variability of the Seyfert galaxy NGC 3783 [PDF]

, 1992
I. S. Glass
openalex   +1 more source

Optical evidence for the unification of active galactic nuclei and quasi-stellar objects. [PDF]

Proc Natl Acad Sci U S A, 1995
Miller JS.
europepmc   +1 more source

The nonstellar continuum of the Seyfert galaxy NGC 7213

, 1984
J. P. Halpern, A. V. Filippenko
openalex   +1 more source

Revelations in our own backyard: Chandra's unique Galactic Center discoveries. [PDF]

Proc Natl Acad Sci U S A, 2010
Markoff S.
europepmc   +1 more source

Extended nonnuclear infrared emission from Seyfert galaxies

, 1986
J. M. Rodríguez-Espinosa, R. J. Rudy, Barbara Jones   +2 more
openalex   +1 more source