NASA Logo, External Link
Facebook icon, External Link to NASA STI page on Facebook Twitter icon, External Link to NASA STI on Twitter YouTube icon, External Link to NASA STI Channel on YouTube RSS icon, External Link to New NASA STI RSS Feed AddThis share icon
 

Record Details

Record 14 of 2418
Dynamical simulations of the interacting galaxies in the NGC 520/UGC 957 system
External Online Source: doi:10.1086/169796
Author and Affiliation:
Stanford, S. A.(Wisconsin, University, Madison, United States)
Balcells, Marc(Groningen, State University, Netherlands)
Abstract: Numerical simulations of the interacting galaxies in the NGC 520/UGC 957 system are presented. Two sets of models were produced to investigate the postulated three-galaxy system of two colliding disk galaxies within NGC 520 and the dwarf galaxy UGC 957. The first set of models simulated a dwarf perturbing one-disk galaxy, which tested the possibility that NGC 520 contains only one galaxy disturbed by the passage of UGC 957. The resulting morphology of the perturbed single disk in the simulation fails to reproduce the observed tidal tails and northwest mass condensation of NGC 520. A second set of models simulated two colliding disks, which tested the hypothesis that NGC 520 itself contains two galaxies in a strong collision and UGC 957 is unimportant to the interaction. These disk-disk models produced a good match to the morphology of the present NGC 520. It is concluded that (1) NGC 520 contains two colliding disk galaxies which have produced the brighter southern half of the long tidal tail and (2) UGC 957, which may originally have been a satellite of one of the disk galaxies, formed the diffuse northern tail as it orbited NGC 520.
Publication Date: Mar 20, 1991
Document ID:
19910042435
(Acquired Nov 28, 1995)
Accession Number: 91A27058
Subject Category: ASTROPHYSICS
Document Type: Journal Article
Publication Information: Astrophysical Journal, Part 1 (ISSN 0004-637X); 370; 118-129
Publisher Information: United States
Contract/Grant/Task Num: NAS5-25451
Financial Sponsor: NASA; United States
Organization Source: Wisconsin Univ.; Madison, WI, United States
Groningen Rijksuniv.
Description: 13p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: ASTRONOMICAL MODELS; COMPUTATIONAL ASTROPHYSICS; DISK GALAXIES; DWARF GALAXIES; INTERACTING GALAXIES; DYNAMIC MODELS; GALACTIC STRUCTURE; MANY BODY PROBLEM; STAR FORMATION
Imprint And Other Notes: Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 370, March 20, 1991, p. 118-129.
Availability Source: Other Sources
› Back to Top
Find Similar Records
NASA Logo, External Link
NASA Official: Gerald Steeman
Site Curator: STI Program
Last Modified: August 18, 2011
Contact Us