Luminosity function of Seyfert galaxies

Journal Article · Tue Jul 01 04:00:00 EDT 1986 · Astrophysics (Engl. Transl.); (United States)

DOI:https://doi.org/10.1007/BF01005567· OSTI ID:6996511

Reshetnikov, V P

A sample of 219 Seyfert galaxies (Sy G) in the interval of absolute magnitudes -18.5 greater than or equal to M/rho/ greater than or equal to -24.5 is used to construct the luminosity function and determine the total spatial density (about 2.10/sup -4/ Mpc/sup -3/) of the Seyfert galaxies. It is shown that the Seyfert galaxies in Markaryan's survey are 20-30% of all the Seyfert galaxies in this range of absolute magnitudes. Galaxies of the type Sy 2 are not less than half of all the Seyferts. It is shown that the bright wings of the luminosity function of optical samples of field galaxies, Seyfert galaxies, and quasars form a continuous luminosity function corresponding to exponent n approx. = 3.7 in the dependence of the spatial density on the photographic luminosity (omicron about L /sup -n/ /rho/). For M/rho/ greater than or equal to -22.5, the observed luminosity function of the Seyfert galaxies is well approximated by Schechter's function.

• Research Organization: Leningrad State Univ.
• OSTI ID: 6996511
• Journal Information: Astrophysics (Engl. Transl.); (United States), Journal Name: Astrophysics (Engl. Transl.); (United States) Vol. 24:1; ISSN ATPYA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMIC RADIO SOURCES
DISTRIBUTION
DISTRIBUTION FUNCTIONS
FUNCTIONS
GALAXIES
LUMINOSITY
MARKARIAN GALAXIES
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
QUANTITY RATIO
QUASARS
REMOTE SENSING
SEYFERT GALAXIES
SPATIAL DISTRIBUTION