naa a22 4500 510732550 CHVBK 20180411082958.0 cr unu---uuuuu 180411e20130501xx s 000 0 eng 10.1134/S106377291305003X doi (NATIONALLICENCE)springer-10.1134/S106377291305003X Ermash A. Astro Space Center, Lebedev Physics Instite, Russian Academy of Sciences, Moscow, Russia aut The luminosity function of narrow-line Seyfert 1 galaxies based on SDSS data (DR7) [Elektronische Daten] [A. Ermash] Luminosity functions of Seyfert 1 active galactic nuclei in the [OIII] λ5007 Å forbidden line are derived from Sloan Digital Sky Survey data (Data Release 7). Special attention is paid to the peculiar class of narrow-line Seyfert 1 (NLSy1) galaxies, whose optical broad, permitted lines are relatively narrow (FWHM ≤ 2000 km/s). A new technique for obtaining an emission-line luminosity function that is able to take into account density variations due to the large-scale structure of the Universe, among other factors, is discussed. The derived luminosity functions are compared with those for other types of active galactic nuclei using available published data. The X-ray luminosity function predicted using our data demonstrates good agreement with observations. Pleiades Publishing, Ltd., 2013 Astronomy Reports SP MAIK Nauka/Interperiodica 57/5(2013-05-01), 317-326 1063-7729 57:5<317 2013 57 11444 https://doi.org/10.1134/S106377291305003X text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S106377291305003X text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Ermash A. Astro Space Center, Lebedev Physics Instite, Russian Academy of Sciences, Moscow, Russia aut NATIONALLICENCE 773 0- Astronomy Reports SP MAIK Nauka/Interperiodica 57/5(2013-05-01), 317-326 1063-7729 57:5<317 2013 57 11444 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer