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Position Angle Variation of the Major Axis of some Galaxies
Author(s) -
Gamaleldin A. I.,
Issa I. A.
Publication year - 1983
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.2113040105
Subject(s) - physics , galaxy rotation curve , variation (astronomy) , position (finance) , position angle , galaxy , astrophysics , point (geometry) , rotation (mathematics) , geometry , galaxy formation and evolution , mathematics , finance , economics
The variation in the direction of the major axis in three ellipticals, five lenticulars and three spirals has been studied using B or V isophotic maps. It is noticed that there is a turn point in most of the curves especially for spirals and lenticulars. This turn point can be used to define the galaxy nucleus region. There seems to be a correlation between the rotation curve and the position angle curve especially for NGC 2784 and NGC 3640