6 research outputs found
The SWIRE-VVDS-CFHTLS surveys: stellar mass assembly over the last 10 Gyears. Evidence for a major build up of the red sequence between z=2 and z=1
(abridged abstract) We present an analysis of the stellar mass growth over
the last 10 Gyrs using a large 3.6 selected sample. We split our sample
into active (blue) and quiescent (red) galaxies. Our measurements of the K-LFs
and LD evolution support the idea that a large fraction of galaxies is already
assembled at . Based on the analysis of the evolution of the stellar
mass-to-light ratio (in K-band) for the spectroscopic sub-sample, we derive the
stellar mass density for the entire sample. We find that the global evolution
of the stellar mass density is well reproduced by the star formation rate
derived from UV dust corrected measurements. Over the last 8Gyrs, we observe
that the stellar mass density of the active population remains approximately
constant while it gradually increases for the quiescent population over the
same timescale. As a consequence, the growth of the stellar mass in the
quiescent population must be due to the shutoff of star formation in active
galaxies that migrate into the quiescent population. From to , we
observe a major build-up of the quiescent population with an increase by a
factor of 10 in stellar mass, suggesting that we are observing the epoch when
an increasing fraction of galaxies are ending their star formation activity and
start to build up the red sequence.Comment: Accepted to A&A with major changes. 1 table and 13 figure
Integrated scenario in JET using real-time profile control
The recent development of real-time measurements and control tools in JET has enhanced the reliability and reproducibility of the relevant ITER scenarios. Diagnostics such as charge exchange, interfero-polarimetry, electron cyclotron emission have been upgraded for real-time measurements. In addition, real-time processes like magnetic equilibrium and q profile reconstruction have been developed and applied successfully in real-time q profile control experiments using model based control techniques. Plasma operation and control against magnetohydrodynamic instabilities are also benefiting from these new systems. The experience gained at JET in the field of real-time measurement and control experiments operation constitutes a very useful basis for the future operation of ITER scenarios
Integrated scenario in JET using real-time profile control
The recent development of real-time measurements and control tools in JET has enhanced the reliability and reproducibility of the relevant ITER scenarios. Diagnostics such as charge exchange, interfero-polarimetry, electron cyclotron emission have been upgraded for real-time measurements. In addition, real-time processes like magnetic equilibrium and q profile reconstruction have been developed and applied successfully in real-time q profile control experiments using model based control techniques. Plasma operation and control against magnetohydrodynamic instabilities are also benefiting from these new systems. The experience gained at JET in the field of real-time measurement and control experiments operation constitutes a very useful basis for the future operation of ITER scenarios