The 12 micron galaxy sample. I. Luminosity functions and a new complete active galaxy sample

Journal Article · Sat Jul 01 04:00:00 EDT 1989 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/167577· OSTI ID:5509317

Spinoglio, L; Malkan, M A ^[1]

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1. CNR, Istituto di Fisica dello Spazio Interplanetario, Frascati (Italy)

An all-sky 12 micron flux-limited sample of active galaxies was selected from the IRAS Point Source Catalog. Most of the sample galaxies are in existing catalogs, and 99 percent have measured redshifts. The 12-micron and the far-infrared luminosity functions of active and normal galaxies are derived using IRAS co-added data. A total of 22 percent of the sample galaxies harbor active nuclei. The sample consists almost equally of Seyfert 1, Seyfert 2, and LINER nuclei. The derived luminosity fuctions for Seyfert 1 and Seyfert 2 galaxies are indistinguishable from those of the optically selected CfA sample. Thus, 12 micron selection is the most efficient available technique for finding complete active galaxy samples. 28 refs.

• OSTI ID: 5509317
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 342; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CATALOGS
COLOR
COSMIC RADIO SOURCES
DOCUMENT TYPES
ELECTROMAGNETIC RADIATION
FAR INFRARED RADIATION
GALAXIES
GALAXY NUCLEI
INFRARED RADIATION
LUMINOSITY
OPTICAL PROPERTIES
ORGANOLEPTIC PROPERTIES
PHYSICAL PROPERTIES
RADIATIONS
RED SHIFT
SATELLITES
SEYFERT GALAXIES