A method for nuclear-component deconvolution in active galaxies

Authors
Citation
Ms. Portal, A method for nuclear-component deconvolution in active galaxies, M NOT R AST, 310(1), 1999, pp. 117-122
Citations number
25
Categorie Soggetti
Space Sciences
Journal title
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN journal
00358711 → ACNP
Volume
310
Issue
1
Year of publication
1999
Pages
117 - 122
Database
ISI
SICI code
0035-8711(1999)310:1<117:AMFNDI>2.0.ZU;2-N
Abstract
A new method for deconvolution of the nuclear component of active galaxies is presented, along with some initial results with several nuclear-type obj ects. Unlike the majority of procedures currently in use, this method is ba sed on the following steps: (a) derivation of seeing-free bulge and disc pa rameters, (b) construction of a two-dimensional model of the galaxy, (c) de rivation of a point-spread function (PSF) from star profiles and convolutio n of the bulge+disc model with the obtained PSF and (d) extraction of the s eeing-convolved model radial profile and subtraction from the observed one. The residual gives the nuclear component. Only standard image processing p ackages are used.