The KMOS3D Survey: Data Release and Final Survey Paper
Wuyts, E.; Lutz, D.; Wuyts, S.; Förster Schreiber, N. M.; Genzel, R.; Tacconi, L. J.; Price, S.; Brammer, G.; Wilman, D.; Nelson, E. J.; Lang, P.; van Dokkum, P. G.; Saglia, R.; Davies, R. I.; Bender, R.; Fossati, M.; Shimizu, T.; Seitz, S.; Mendel, J. T.; Galametz, A.; Beifiori, A.; Fabricius, M.; Bandara, K.; Tadaki, K.; Übler, H.; Wisnioski, E.; Belli, S.; Momcheva, I.; Davies, R. L.; Rosario, D.; Chan, J.
Germany, Australia, United Kingdom, United States, Denmark, Switzerland, Japan
Abstract
We present the completed KMOS3D survey, an integral field spectroscopic survey of 739 {log}({M}\star /{M}⊙ )> 9 galaxies at 0.6 < z < 2.7 using the K-band Multi Object Spectrograph (KMOS) at the Very Large Telescope. The KMOS3D survey provides a population-wide census of kinematics, star formation, outflows, and nebular gas conditions both on and off the star-forming galaxy main sequence through the spatially resolved and integrated properties of Hα, [N II], and [S II] emission lines. We detect Hα emission for 91% of galaxies on the main sequence of star formation and 79% overall. The depth of the survey has allowed us to detect galaxies with star formation rates below 1 M ⊙ yr-1, as well as to resolve 81% of detected galaxies with ≥3 resolution elements along the kinematic major axis. The detection fraction of Hα is a strong function of both color and offset from the main sequence, with the detected and nondetected samples exhibiting different spectral energy distribution shapes. Comparison of Hα and UV+IR star formation rates reveal that dust attenuation corrections may be underestimated by 0.5 dex at the highest masses ({log}({M}\star /{M}⊙ )> 10.5). We confirm our first year results of a high rotation-dominated fraction (monotonic velocity gradient and v rot/{σ }0> \sqrt{3.36}) of 77% for the full KMOS3D sample. The rotation-dominated fraction is a function of both stellar mass and redshift, with the strongest evolution measured over the redshift range of the survey for galaxies with {log}({M}\star /{M}⊙ )< 10.5. With this paper, we include a final data release of all 739 observed objects (http://www.mpe.mpg.de/ir/KMOS3D).
Based on observations obtained at the Very Large Telescope (VLT) of the European Southern Observatory (ESO), Paranal, Chile (ESO program IDS 092A-0091, 093.A-0079, 093.A-0079, 094.A-0217, 095.A-0047, 096.A-0025, 097.A-0028, 098.A-0045, 099.A-0013, 0100.A-0039, and 0101.A-0022).