Help Privacy Policy Disclaimer
  Advanced SearchBrowse




Journal Article

Galaxy And Mass Assembly (GAMA): Data Release 4 and the z < 0.1 total and z < 0.08 morphological galaxy stellar mass functions


Tuffs,  Richard J.
Division Prof. Dr. James A. Hinton, MPI for Nuclear Physics, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)

(Preprint), 15MB

Supplementary Material (public)
There is no public supplementary material available

Driver, S. P., Bellstedt, S., Robotham, A. S. G., Baldry, I. K., Davies, L. J., Liske, J., et al. (2022). Galaxy And Mass Assembly (GAMA): Data Release 4 and the z < 0.1 total and z < 0.08 morphological galaxy stellar mass functions. Monthly Notices of the Royal Astronomical Society, 513(1), 439-467. doi:10.1093/mnras/stac472.

Cite as: https://hdl.handle.net/21.11116/0000-000C-0351-5
In Galaxy And Mass Assembly Data Release 4 (GAMA DR4), we make available our
full spectroscopic redshift sample. This includes 248682 galaxy spectra, and,
in combination with earlier surveys, results in 330542 redshifts across five
sky regions covering ~250deg^2. The redshift density, is the highest available
over such a sustained area, has exceptionally high completeness (95 per cent to
r_KIDS=19.65mag), and is well suited for the study of galaxy mergers, galaxy
groups, and the low redshift (z<0.25) galaxy population. DR4 includes 32
value-added tables or Data Management Units (DMUs) that provide a number of
measured and derived data products including GALEX, ESO KiDS, ESO VIKING, WISE
and Herschel Space Observatory imaging. Within this release, we provide visual
morphologies for 15330 galaxies to z<0.08, photometric redshift estimates for
all 18million objects to r_KIDS~25mag, and stellar velocity dispersions for
111830 galaxies. We conclude by deriving the total galaxy stellar mass function
(GSMF) and its sub-division by morphological class (elliptical, compact-bulge
and disc, diffuse-bulge and disc, and disc only). This extends our previous
measurement of the total GSMF down to 10^6.75 M_sol h^-2_70 and we find a total
stellar mass density of rho_*=(2.97+/-0.04)x10^8 M_sol h_70 Mpc^-3 or
Omega_*=(2.17+/-0.03)x10^-3 h^-1_70. We conclude that at z<0.1, the Universe
has converted 4.9+/-0.1 per cent of the baryonic mass implied by Big Bang
Nucleosynthesis into stars that are gravitationally bound within the galaxy