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Title: Tidal disruption model for the interacting pair of galaxies VV 117 (NGC 2444/45)
Authors: Narasimhan, K. S. V. S
Namboodiri, P. M. S
Alladin, S. M
Keywords: Stellar Dynamics;Galaxies:Interactions;Tidel Model for V V 117;Methods:Numerical
Issue Date: Sep-2003
Publisher: Springer
Citation: Astrophysics and Space Science, Vol. 286, No. 3, pp. 381 - 395
Abstract: A series of N-body simulations have been performed to interpret the interacting pair of galaxies VV 117 (NGC 2444/45). The galaxies have been modelled assuming a mass ratio two. The simulations use various values for the distance of closest approach and the eccentricity of the relative orbit of the pair. A plausible scenario for the tidal disruption of the less massive galaxy is proposed. NGC 2444, having double the mass of NGC 2445, has undergone penetrating collision with the latter in a hyperbolic or a parabolic orbit. After the first collision, the orbit has become bound. Our results show that VV 117 has either just emerged from the first collision or are on the verge of a second collision. NGC 2445 suffers considerable disruption and mass loss. NGC 2444 is not affected much. The second collision is expected to culminate in the merger of the two galaxies.
Description: Restricted Access
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ISSN: 0004 - 640X
Appears in Collections:IIAP Publications

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