Galaxy disc heating as a result of minor mergers

We perform a sample of N-body simulations of a minor merger between a Milky Way type galaxy and a satellite, which is density scaled version of the primary galaxy. In this suite of collisionless runs we change the value of some critical parameters like the luminous mass ratio between the two galaxie...

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Bibliographic Details
Published in:Proceedings of the International Astronomical Union 2009-08, Vol.5 (S262), p.432-433
Main Authors: Tapia, M. T., Balcells, M., Eliche-Moral, M. C.
Format: Article
Language:English
Subjects:
Astronomy
Astrophysics
Numerical analysis
Orbits
Poster Papers
Satellites
Stars & galaxies
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Summary:We perform a sample of N-body simulations of a minor merger between a Milky Way type galaxy and a satellite, which is density scaled version of the primary galaxy. In this suite of collisionless runs we change the value of some critical parameters like the luminous mass ratio between the two galaxies (1 : 6, 1 : 9), the type of orbit (direct or prograde) and the number of particles (185,000, 555,000 and 1,850,000). We estimate the disc thickening by measuring the median of the vertical scale and we find that that the merger increases the scale height in a factor of ≈2 in all the remnants.
ISSN:1743-9213
1743-9221
DOI:10.1017/S1743921310003571