Colour gradients within SDSS DR7 galaxies: hints of recent evolution

Details Colour gradients within SDSS DR7 galaxies: hints of recent evolution Colour gradients within SDSS DR7 galaxies: hints of recent evolution

2010-08-13

arxiv.org/abs/1008.2354v3

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

16 pages, 16 figures, MNRAS

Scientific paper

The evolutionary path followed by a galaxy shapes its internal structure, and, in particular, its internal colour variation. We present a study of the internal colour variation within galaxies from the Seventh Data Release of the Sloan Digital Sky Survey (SDSS DR7). We statistically study the connection between the internal colour variation and global galactic properties, looking for hints of the recent galactic evolution. Considering only galaxies with good photometry and spectral measurements, we define four luminosity-threshold samples within the redshift range 0.01

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