Spherical galaxy collisions : Head-on encounters
We investigate low-velocity, highly interpenetrating ("hard") head-on encounters between equal mass spherical galaxies by means of full N-body simulations. We compute the energy changes (both orbital and internal) caused by the collitions strength (the perturber mass-weighted inverse of th...
Guardado en:
| Autores principales: | , |
|---|---|
| Formato: | Articulo Comunicacion |
| Lenguaje: | Español |
| Publicado: |
1987
|
| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/138385 |
| Aporte de: |
| id |
I19-R120-10915-138385 |
|---|---|
| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Español |
| topic |
Astronomía Galaxias |
| spellingShingle |
Astronomía Galaxias Navarro, J. Mosconi, M. Spherical galaxy collisions : Head-on encounters |
| topic_facet |
Astronomía Galaxias |
| description |
We investigate low-velocity, highly interpenetrating ("hard") head-on encounters between equal mass spherical galaxies by means of full N-body simulations. We compute the energy changes (both orbital and internal) caused by the collitions strength (the perturber mass-weighted inverse of the relative velocity at closes approach, Mₚ/Vₚ). Galaxies always gain energy in the encounters, but their rms velocity decreases after the collision, extra-energy being used to expand the galaxy rather than increasing its kinetic energy. The galaxies fall into bound orbits and energy rapidly if Vₚ < 2.75 σₚ, where σₚ is the rms velocity of the galaxy at maximum overlapping. |
| format |
Articulo Comunicacion |
| author |
Navarro, J. Mosconi, M. |
| author_facet |
Navarro, J. Mosconi, M. |
| author_sort |
Navarro, J. |
| title |
Spherical galaxy collisions : Head-on encounters |
| title_short |
Spherical galaxy collisions : Head-on encounters |
| title_full |
Spherical galaxy collisions : Head-on encounters |
| title_fullStr |
Spherical galaxy collisions : Head-on encounters |
| title_full_unstemmed |
Spherical galaxy collisions : Head-on encounters |
| title_sort |
spherical galaxy collisions : head-on encounters |
| publishDate |
1987 |
| url |
http://sedici.unlp.edu.ar/handle/10915/138385 |
| work_keys_str_mv |
AT navarroj sphericalgalaxycollisionsheadonencounters AT mosconim sphericalgalaxycollisionsheadonencounters |
| bdutipo_str |
Repositorios |
| _version_ |
1764820457172762625 |