REPOSITORIO
INSTITUCIONAL

    • español
    • English
  • Site map
  • English 
    • español
    • English
  • Login
  • Artículos(current)
  • Libros
  • Tesis
  • Trabajos de grado
  • Documentos Institucionales
    • Actas
    • Acuerdos
    • Decretos
    • Resoluciones
  • Multimedia
  • Productos de investigación
  • Acerca de
View Item 
  •   Home
  • Artículos
  • Indexados Scopus
  • View Item
  •   Home
  • Artículos
  • Indexados Scopus
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

ON the CONSERVATION of the VERTICAL ACTION in GALACTIC DISKS

Thumbnail
View/Open
26. ON THE CONSERVATION OF THE VERTICAL ACTION IN GALACTIC DISKS.pdf (1.285Mb)
Share this
Date
2016
Author
Vera-Ciro C.
D'Onghia E.
Department of Astronomy, University of Wisconsin, 2535 Sterling Hall, 475 N. Charter Street, Madison, WI, 53076, USA, Departamento de Facultad de Ciencias Básicas, Universidad de Medellín, Cra 87 N30-65, Medellín, Colombia

Citación

       
TY - GEN T1 - ON the CONSERVATION of the VERTICAL ACTION in GALACTIC DISKS AU - Vera-Ciro C. AU - D'Onghia E. Y1 - 2016 UR - http://hdl.handle.net/11407/4377 PB - Institute of Physics Publishing AB - ER - @misc{11407_4377, author = {Vera-Ciro C. and D'Onghia E.}, title = {ON the CONSERVATION of the VERTICAL ACTION in GALACTIC DISKS}, year = {2016}, abstract = {}, url = {http://hdl.handle.net/11407/4377} }RT Generic T1 ON the CONSERVATION of the VERTICAL ACTION in GALACTIC DISKS A1 Vera-Ciro C. A1 D'Onghia E. YR 2016 LK http://hdl.handle.net/11407/4377 PB Institute of Physics Publishing AB OL Spanish (121)
Gestores bibliográficos
Refworks
Zotero
BibTeX
CiteULike
Metadata
Show full item record
Documents PDF
Abstract
We employ high-resolution N-body simulations of isolated spiral galaxy models, from low-amplitude, multi-armed galaxies to Milky Way-like disks, to estimate the vertical action of ensembles of stars in an axisymmetrical potential. In the multi-armed galaxy the low-amplitude arms represent tiny perturbations of the potential, hence the vertical action for a set of stars is conserved, although after several orbital periods of revolution the conservation degrades significantly. For a Milky Way-like galaxy with vigorous spiral activity and the formation of a bar, our results show that the potential is far from steady, implying that the action is not a constant of motion. Furthermore, because of the presence of high-amplitude arms and the bar, considerable in-plane and vertical heating occurs that forces stars to deviate from near-circular orbits, reducing the degree at which the actions are conserved for individual stars, in agreement with previous results, but also for ensembles of stars. If confirmed, this result has several implications, including the assertion that the thick disk of our Galaxy forms by radial migration of stars, under the assumption of the conservation of the action describing the vertical motion of stars. © 2016. The American Astronomical Society. All rights reserved.
URI
http://hdl.handle.net/11407/4377
Collections
  • Indexados Scopus [2005]
All of RI UdeMCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects
My AccountLoginRegister
Statistics GTMView statistics GTM
OFERTA ACADÉMICA
  • Oferta académica completa
  • Facultad de Derecho
  • Facultad de Comunicación
  • Facultad de Ingenierías
  • Facultad de Ciencias Económicas y Administrativas
  • Facultad de Ciencias Sociales y Humanas
  • Facultad de Ciencias Básicas
  • Facultad de Diseño
SERVICIOS
  • Teatro
  • Educación continuada
  • Centro de Idiomas
  • Consultorio Jurídico
  • Centro de Asesorías y Consultorías
  • Prácticas empresariales
  • Operadora Profesional de Certámenes
INVESTIGACIÓN
  • Biblioteca
  • Centros de investigación
  • Revistas científicas
  • Repositorio institucional
  • Universidad - Empresa - Estado - Sociedad

Universidad de Medellín - Teléfono: +57 (4) 590 4500 Ext. 11422 - Dirección: Carrera 87 N° 30 - 65 Medellín - Colombia - Suramérica
© Copyright 2012 ® Todos los Derechos Reservados
Contacto

 infotegra.com