Galaxy And Mass Assembly (GAMA): Data Release 4 and the z < 0.1 total and z < 0.08 morphological galaxy stellar mass functions
Driver Simon P; Bellstedt Sabine; Robotham Aaron S G; Baldry Ivan K; Davies Luke J; Liske Jochen; Obreschkow Danail; Taylor Edward N; Wright Angus H; Alpaslan Mehmet; Bamford Steven P; Bauer Amanda E; Bland-Hawthorn Joss; Bilicki Maciej; Bravo Matías; Brough Sarah; Casura Sarah; Cluver Michelle E; Colless Matthew; Conselice Christopher J; Croom Scott M; de Jong Jelte; D’Eugenio Franceso; De Propris Roberto; Dogruel Burak; Drinkwater Michael J; Dvornik Andrej; Farrow Daniel J; Frenk Carlos S; Giblin Benjamin; Graham Alister W; Grootes Meiert W; Gunawardhana Madusha L P; Hashemizadeh Abdolhosein; Häußler Boris; Heymans Catherine; Hildebrandt Hendrik; Holwerda Benne W; Hopkins Andrew M; Jarrett Tom H; Jones D Heath; Kelvin Lee S; Koushan Soheil; Kuijken Konrad; Lara-López Maritza A; Lange Rebecca; López-Sánchez Ángel R; Loveday Jon; Mahajan Smriti; Meyer Martin; Moffett Amanda J; Napolitano Nicola R; Norberg Peder; Owers Matt S; Radovich Mario; Raouf Mojtaba; Peacock John A; Phillipps Steven; Pimbblet Kevin A; Popescu Cristina; Said Khaled; Sansom Anne E; Seibert Mark; Sutherland Will J; Thorne Jessica E; Tuffs Richard J; Turner Ryan; van der Wel Arjen; van Kampen Eelco; Wilkins Steve M
Galaxy And Mass Assembly (GAMA): Data Release 4 and the z < 0.1 total and z < 0.08 morphological galaxy stellar mass functions
Oxford Univ Press
Julkaisun pysyvä osoite on:
https://urn.fi/URN:NBN:fi-fe2022081154373
https://urn.fi/URN:NBN:fi-fe2022081154373
Tiivistelmä
In Galaxy And Mass Assembly Data Release 4 (GAMA DR4), we make available our full spectroscopic redshift sample. This includes 248 682 galaxy spectra, and, in combination with earlier surveys, results in 330 542 redshifts across five sky regions covering similar to 250 deg(2). The redshift density, is the highest available over such a sustained area, has exceptionally high completeness (95 per cent to r(KiDS) = 19.65 mag), 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 HerschelSpace Observatory imaging. Within this release, we provide visual morphologies for 15 330 galaxies to z < 0.08, photometric redshift estimates for all 18 million objects to r(KiDS) similar to 25 mag, and stellar velocity dispersions for 111 830 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-circle dot h(70)(-2) and we find a total stellar mass density of rho(*) = (2.97 +/- 0.04) x 10(8) M-circle dot h(70) Mpc(-3) or Omega(*)=(2.17 +/- 0.03) x 10(-3) h(70)(-1). 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 population.
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