Galaxy And Mass Assembly (GAMA): Data Release 4 and the z &lt; 0.1 total and z &lt; 0.08 morphological galaxy stellar mass functions
Creators: name: Driver, Simon P.
name: Bellstedt, Sabine
name: Robotham, Aaron S. G.
name: Baldry, Ivan K.
name: Davies, Luke J.
name: Liske, Jochen
name: Obreschkow, Danail
name: Taylor, Edward N.
name: Wright, Angus H.
name: Alpaslan, Mehmet
name: Bamford, Steven P.
name: Bauer, Amanda E.
name: Bland-Hawthorn, Joss
name: Bilicki, Maciej
name: Bravo, Matias
name: Brough, Sarah
name: Casura, Sarah
name: Cluver, Michelle E.
name: Colless, Matthew
name: Conselice, Christopher J.
name: Croom, Scott M.
name: de Jong, Jelte
name: D'Eugenio, Franceso
name: De Propris, Roberto
name: Dogruel, Burak
name: Drinkwater, Michael J.
name: Dvornik, Andrej
name: Farrow, Daniel J.
name: Frenk, Carlos S.
name: Giblin, Benjamin
name: Graham, Alister W.
name: Grootes, Meiert W.
name: Gunawardhana, Madusha L. P.
name: Hashemizadeh, Abdolhosein
name: Haussler, Boris
name: Heymans, Catherine
name: Hildebrandt, Hendrik
name: Holwerda, Benne W.
name: Hopkins, Andrew M.
name: Jarrett, Tom H.
name: Jones, D. Heath
name: Kelvin, Lee S.
name: Koushan, Soheil
name: Kuijken, Konrad
name: Lara-Lopez, Maritza A.
name: Lange, Rebecca
name: Lopez-Sanchez, Angel R.
name: Loveday, Jon
name: Mahajan, Smriti
name: Meyer, Martin
name: Moffett, Amanda J.
name: Napolitano, Nicola R.
name: Norberg, Peder
name: Owers, Matt S.
name: Radovich, Mario
name: Raouf, Mojtaba
name: Peacock, John A.
name: Phillipps, Steven
name: Pimbblet, Kevin A.
name: Popescu, Cristina
name: Said, Khaled
name: Sansom, Anne E.
name: Seibert, Mark
name: Sutherland, Will J.
name: Thorne, Jessica E.
name: Tuffs, Richard J.
name: Turner, Ryan
name: van der Wel, Arjen
name: van Kampen, Eelco
name: Wilkins, Steve M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: 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&lt;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&lt;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&lt;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 population.
description: Accepted for publication in MNRAS. GAMA Data Release 4 is available at: http://www.gama-survey.org/dr4/