1998A&AS..132..417W


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.11CEST18:32:34

1998A&AS..132..417W - Astron. Astrophys., Suppl. Ser., 132, 417-429 (1998/November-1)

Determination of orbital parameters of interacting galaxies using a genetic algorithm. Description of the method and application to artificial data.

WAHDE M.

Abstract (from CDS):

A method for determining the orbital parameters of interacting pairs of galaxies is presented and evaluated using artificial data. The method consists of a genetic algorithm which can search efficiently through the very large space of possible orbits. It is found that orbital parameters close to the actual orbital parameters of the pair can in general be found, even in the presence of fairly high levels of noise in the data. Both position and velocity data can be employed, but if no velocity data are available, the orbital parameters can be determined using position data only. The inner regions of the galaxies, which are difficult to model, can be neglected, and the orbital parameters can be determined using the remaining information.

Abstract Copyright:

Journal keyword(s): galaxies: interactions - galaxies: kinematics and dynamics - methods: N-body simulations

Simbad objects: 4

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Number of rows : 4

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 M 51 GiP 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 3782 4
2 NGC 7752 GiP 23 46 58.557 +29 27 32.17   14.3       ~ 121 0
3 APG 86 PaG 23 47 01.7 +29 28 16           ~ 127 1
4 NGC 7753 IG 23 47 04.834 +29 29 00.17   13.2       ~ 154 0

    Equat.    Gal    SGal    Ecl

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2020.07.11-18:32:34

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