Two Red Clumps and the X-shaped Milky Way Bulge

From 2MASS infra-red photometry we find two red clump (RC) populations co-existing in the same fields toward the Galactic bulge at latitudes |b|>5.5 deg., ranging over ~13 degrees in longitude and 20 degrees in latitude. We can only understand the data if

Detalles Bibliográficos
Autores: McWilliam, A., Zoccali, M.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2010
País:Chile
Idioma:inglés
OAI Identifier:oai:repositorio.anid.cl:10533/240761
Acceso en línea:https://hdl.handle.net/10533/240761
Access Level:acceso abierto
Descripción
Sumario:From 2MASS infra-red photometry we find two red clump (RC) populations co-existing in the same fields toward the Galactic bulge at latitudes |b|>5.5 deg., ranging over ~13 degrees in longitude and 20 degrees in latitude. We can only understand the data if