An international team of astronomers has conducted a powerful new survey of the sky at radio wavelengths. This has provided some of the most advanced data with which to examine the life-cycle of galaxies over the past 13 billion years of the universe’s history. This survey, and several of the key scientific findings, will be presented in an upcoming VLA-COSMOS special issue of the Astronomy & Astrophysics journal. Go to the full article for more information and to view our exciting video series!
DEVILS (the Deep Extragalactic VIsible Legacy Survey), a spectroscopic campaign aimed at bridging the near and distant Universe by undertaking the highest completeness survey, got approved and will start taking spectra right now. The survey aims for about 58k galaxies at 0.3 < z < 1.0 with r < 22 and Y < 21.2 over 6 square-degrees including COSMOS and SXDS. The spectra are taken with the AAOmega and 2dF spectrographs on the Australian Astronomical Telescope.
DEVILS will allow a detailed study of the evolution of galaxies and structure, and the dark matter baryon interface on <Mpc scales.
The dominant processes that stop the formation of stars in galaxies is currently still unknown. Similarly, we do not know what grows galaxies after they stop their star formation and therefore should not change their size and mass anymore. Likely the life of very massive galaxies is very different than that of low-mass galaxies.
This new study on COSMOS targets to answering these questions for the most massive galaxies in our Universe by using the COSMOS/UltraVISTA near-infrared data.