The central regions of early-type galaxies

Resultado de la investigación: Capítulo del libro/informe/acta de congresoContribución a la conferenciarevisión exhaustiva

Resumen

The ACS Virgo and Fornax cluster surveys present homogeneous HST/ACS observations of 143 early-type galaxies and their globular cluster systems in the Virgo and Fornax clusters. I briefly describe these surveys and present some of their recent results on the properties of the central regions of galaxies. In particular, we have shown that on nuclear scales, galaxies are found to exhibit a gradual progression from a light “deficit” (cores) to a light “excess” (stellar nuclei), while on larger scales the brightness profiles of galaxies are accurately described by Sérsic models. Our observations suggest that a generic by-product of galaxy formation might be the creation of a central massive object — either a supermassive black hole or a compact stellar nucleus — that contains a mean fraction ∼0.2% of the total galactic mass.

Idioma originalInglés
Título de la publicación alojadaAstrophysics and Space Science Proceedings
EditoresF. Duccio Macchetto
EditorialSpringer Science and Business Media B.V.
Páginas95-98
Número de páginas4
ISBN (versión digital)9789048134007
ISBN (versión impresa)9780387727677, 9780387876207, 9781402055720, 9781402069321, 9781402088674, 9781402091896, 9781441981608, 9781441983688, 9783540758259, 9783642033230, 9783642103216, 9783642103513, 9783642113406, 9783642172502, 9789048133994, 9789048133994, 9789048134984
DOI
EstadoPublicada - 2010
Publicado de forma externa
Evento41st Symposium of the European Space Agency : The Impact of HST on European Astronomy, 2007 - Noordwijk, Países Bajos
Duración: 29 may. 20071 jun. 2007

Serie de la publicación

NombreAstrophysics and Space Science Proceedings
Volumen0
ISSN (versión impresa)1570-6591
ISSN (versión digital)1570-6605

Conferencia

Conferencia41st Symposium of the European Space Agency : The Impact of HST on European Astronomy, 2007
País/TerritorioPaíses Bajos
CiudadNoordwijk
Período29/05/071/06/07

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