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Title: An interaction scenario of the galaxy pair NGC 3893/96 (KPG 302): A single passage?

Using the data obtained previously from Fabry-Perot interferometry, we study the orbital characteristics of the interacting pair of galaxies KPG 302 with the aim to estimate a possible interaction history, the conditions necessary for the spiral arm formation, and initial satellite mass. We found by performing N-body/smoothed particle hydrodynamics simulations of the interaction that a single passage can produce a grand design spiral pattern in less than 1 Gyr. Although we reproduce most of the features with the single passage, the required satellite to host mass ratio should be ∼1:5, which is not confirmed by the dynamical mass estimate made from the measured rotation curve. We conclude that a more realistic interaction scenario would require several passages in order to explain the mass ratio discrepancy.
Authors:
;  [1] ;  [2]
  1. Instituto de Astronomía, Universidad Nacional Autónoma de Mexico (UNAM), A.P. 70-264,04510 México D.F. (Mexico)
  2. Instituto Nacional de Investigaciones Nucleares, Carretera México-Toluca S/N, La Marquesa, Ocoyoacac, 52750 Estado de México (Mexico)
Publication Date:
OSTI Identifier:
22356839
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 787; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; FABRY-PEROT INTERFEROMETER; GALAXIES; HYDRODYNAMICS; INTERACTIONS; INTERFEROMETRY; MASS; SATELLITES; SIMULATION