NGC 5506: An X-ray Seyfert galaxy

Journal Article · Fri Sep 01 04:00:00 EDT 1978 · Astrophys. J., Lett. Ed.; (United States)

DOI:https://doi.org/10.1086/182758· OSTI ID:6538054

Rubin, V C

Spectra of NGC 5506, an X-ray galaxy, show strong emission lines, with widths of permitted and forbidden lines > or approx. =1500 km s/sup -1/. Thus NGC 5506 is properly classified as a Seyfert 2 galaxy, rather than as a narrow line galaxy. The measured rotation curve shows velocities increasing out to r=48''=8.3 kpc; and a mass M/sub 8.3/approx.4 x 10/sup 10/M/sub sun/. The total mass is Mapprox.1 x 10/sup 11/M/sub sun/ if the rotation curve remains flat out to the de Vaucouleurs radius, r=15.0 kpc.

• Research Organization: Department of Terrestrial Magnetism, Carnegie Institution of Washington
• OSTI ID: 6538054
• Journal Information: Astrophys. J., Lett. Ed.; (United States), Journal Name: Astrophys. J., Lett. Ed.; (United States) Vol. 224:2; ISSN AJLEA
• Country of Publication: United States
• Language: English

Related Subjects

640103* -- Astrophysics & Cosmology-- Quasi-Stellar
Radio
& X-Ray Sources-- (-1987)
640105 -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMIC RAY SOURCES
COSMIC X-RAY SOURCES
ELECTROMAGNETIC RADIATION
EMISSION SPECTRA
GALAXIES
INFRARED SPECTRA
MASS
RADIATIONS
SEYFERT GALAXIES
SPECTRA
VELOCITY
VISIBLE RADIATION
X-RAY GALAXIES