On the Connection Between Shape and Stellar Population in Early-type Galaxies

Bibcode
2011ApJ...727L...6D
DOI
10.1088/2041-8205/727/1/L6
D'Onofrio, M.; Valentinuzzi, T.; Fasano, G.; Moretti, A.; Bettoni, D.; Poggianti, B.; Vulcani, B.; Varela, J.; Fritz, J.; Cava, A.; Kjærgaard, P.; Moles, M.; Couch, W. J.; Dressler, A.
Referencia bibliográfica

The Astrophysical Journal Letters, Volume 727, Issue 1, article id. L6 (2011).

Fecha de publicación:
1
2011
Número de autores
14
Número de autores del IAC
2
Número de citas
12
Número de citas referidas
10
Descripción
We report on the discovery of a relation between the stellar mass M* of early-type galaxies (hereafter ETGs), their shape, as parameterized by the Sersic index n, and their stellar mass-to-light ratio M*/L. In a three-dimensional log space defined by these variables, the ETGs populate a plane surface with small scatter. This relation tells us that galaxy shape and stellar population are not independent physical variables, a result that must be accounted for by theories of galaxy formation and evolution.
Proyectos relacionados
Project Image
Formación y Evolución de Galaxias: Observaciones Infrarrojas y en otras Longitudes de Onda
Este grupo desarrolla varios proyectos extragalácticos en diferentes rangos del espectro electromagnético utilizando satélites y telescopios en tierra para estudiar la evolución cosmológica de las galaxias y el origen de la actividad nuclear en galaxias activas. En el aspecto instrumental, el grupo forma parte del consorcio internacional que ha
Ismael
Pérez Fournon
En ejecución
Tipo
Con árbitro
Formación y Evolución de Galaxias (FYEG)
Galaxias

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