Por favor utiliza este link para citar o compartir este documento: http://repositoriodigital.academica.mx/jspui/handle/987654321/450736
Título: A new RR Lyrae Survey of the Galactic Halo using quest Collaboration Data
Palabras clave: Física, Astronomía y Matemáticas
DARK MATTER
GALAXY
FORMATION
GALAXY
HALO
GALAXY
STRUCTURE
STARS
ARIABLES
OTHER
Editorial: Instituto de Astronomía
Descripción: This thesis project intends to study the known substructures in the galactic halo and search for new ones using data from the QUEST collaboration. These substructures are believed to be remnants of globular clusters or accreted dwarf galaxies, similar to the Sagittarius dwarf spheroidal galaxy. RR Lyrae stars will be used to trace the halo because they are relatively easy to detect and because they are excellent standard candles whose distances are better determined than alternative tracers, e.g., M giants. Part of the project involves spectroscopic observation of RR Lyrae stars in the leading stream from the Sgr dSph galaxy, which will better determine its spatial dimensions, structure, radial velocity and velocity dispersion. These properties constrain models of the stream that assume dierent shapes for the dark matter halo.
Other Identifiers: http://www.redalyc.org/articulo.oa?id=57102523
Aparece en las Colecciones:Revista Mexicana de Astronomía y Astrofísica

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