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.
Bibliographical reference

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

Advertised on:
1
2011
Number of authors
14
IAC number of authors
2
Citations
12
Refereed citations
10
Description
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.
Related projects
Project Image
Formation and Evolution of Galaxies: Observations in Infrared and other Wavelengths
This IAC research group carries out several extragalactic projects in different spectral ranges, using space as well as ground-based telescopes, to study the cosmological evolution of galaxies and the origin of nuclear activity in active galaxies. The group is a member of the international consortium which built the SPIRE instrument for the
Ismael
Pérez Fournon
In progress
Type
Refereed
Galaxies
Formation & Evolution of Galaxies (FYEG)

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