The Evolution of Stellar Mass in the NICMOS UDF and the CFHTLS Deep Fields

Details The Evolution of Stellar Mass in the NICMOS UDF and the CFHTLS Deep Fields The Evolution of Stellar Mass in the NICMOS UDF and the CFHTLS Deep Fields

2005-10-05

arxiv.org/abs/astro-ph/0510149v1

Astronomy and Astrophysics

Astrophysics

Proceedings contribution for "The Fabulous Destiny of Galaxies; Bridging Past and Present", Marseille, 2005. requires mrs2005.

Scientific paper

We measure the build-up of the stellar mass of galaxies from z=6 to z=1. Using 15 band multicolour imaging data in the NICMOS Ultra Deep Field we derive photometric redshifts and masses for 796 galaxies down to H_AB=26.5. The derived evolution of the global stellar mass density of galaxies is consistent with previous star formation rate density measurements over the observed range of redshifts. Ongoing research in the CFHTLS Deep Fields confirms this result at lower redshifts. Further, if the sample is split by morphological type, a substantial increase is seen in the number of bulge dominated galaxies relative to disk-dominated galaxies since z=1.

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