NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-08-20 T22:45:48 PDT
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For refcode 1999AstL...25..582E:
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NED Abstract

Copyright by American Institute of Physics. 1999AstL...25..582E Parameters of Bulges and Disks of Interacting Galaxies E. A. Evstigneeva and V. P. Reshetnikov Received October 20,1998 Abstract. The photometric structure of 23 interacting galaxies is analyzed. It is shown that equivalent photometric profiles, if used for statistical analyses of the global structure of the disks of spiral galaxies, yield the same results as major-axis profiles. When analyzing nonaxisymmetric and faint objects, the equivalent profiles should be preferred to both the major-axis and elliptically averaged profiles. The studies of integral characteristics of bulges of interacting spiral galaxies showed that the parameters of these objects obey the {mu}_e-r_e_ relation for normal spirals over a wide range of surface-brightness ~10^m^) and linear- dimension (~3 x 10^2^) values. This fact may imply that strong gravitational perturbations have little effect on dense central galaxy regions, leaving the bulges in a state that is very close to equilibrium. The central parts of disks in interacting spirals are, on the average, ~1^m^ brighter than the corresponding regions in isolated galaxies, which is probably attributable to enhanced star-formation process. Integrated photometric parameters of the disks of local interacting galaxies are similar to those of spiral galaxies of comparable size observed at z ~ 1. The latter are also characterized by high surface brightness. Among them, interacting or disturbed objects comprise a sizable fraction. It may be assumed that gravitational perturbations and external accretion contribute significantly to the observed evolution of disk parameters in large spiral galaxies, when z ~ 1.
Retrieve 40 NED objects in this reference.
Please click here for ADS abstract

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