The SDSS-UKIDSS Fundamental Plane of Early-Type Galaxies

Bibcode
2008ApJ...689..913L
DOI
10.1086/592769
La Barbera, F.; Busarello, G.; Merluzzi, P.; de la Rosa, I. G.; Coppola, G.; Haines, C. P.
Referencia bibliográfica

The Astrophysical Journal, Volume 689, Issue 2, pp. 913-918.

Fecha de publicación:
12
2008
Revista
The Astrophysical Journal
Número de autores
6
Número de autores del IAC
1
Número de citas
39
Número de citas referidas
33
Descripción
We derive the fundamental plane (FP) relation for a sample of 1430 early-type galaxies in the optical (r band) and the near-infrared (K band), by combining SDSS and UKIDSS data. With such a large, homogeneous data set, we are able to assess the dependence of the FP on the wave band. Our analysis indicates that the FP of luminous early-type galaxies is essentially wave band-independent, with its coefficients increasing at most by 8% from the optical to the NIR. This finding fits well into a consistent picture in which the tilt of the FP is not driven by stellar populations but results from other effects, such as nonhomology. In this framework, the optical and NIR FPs require more massive galaxies to be slightly more metal-rich than less massive ones, and to have highly synchronized ages, with an age variation per decade in mass smaller than a few percent.
Proyectos relacionados
Miembros del grupo
Huellas de la Formación de las Galaxias: Poblaciones estelares, Dinámica y Morfología

Bienvenida a la página web del g rupo de investigación Traces of Galaxy Formation. Somos un grupo de investigación amplio, diverso y muy activo cuyo objetivo principal es entender la formación de galaxias en el Universo de una manera lo más completa posible. Con el estudio detellado de las poblaciones estelares como bandera, estamos constantemente

Ignacio
Martín Navarro
En ejecución
Tipo
Con árbitro
Galaxias

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