posted on 2023-06-08, 21:14authored byLee S Kelvin, Simon P Driver, Aaron S G Robotham, Edward N Taylor, Alister W Graham, Mehmet Alpaslan, Ivan Baldry, Steven P Bamford, Amanda E Bauer, Joss Bland-Hawthorn, Michael J I Brown, Matthew Colless, Christopher J Conselice, Benne W Holwerda, Andrew M Hopkins, Maritza A Lara-López, Jochen Liske, Ángel R López-Sánchez, Jonathan LovedayJonathan Loveday, Peder Norberg, Steven Phillipps, Cristina C Popescu, Matthew Prescott, Anne E Sansom, Richard J Tuffs
We present an estimate of the galaxy stellar mass function and its division by morphological type in the local (0.025 < z < 0.06) Universe. Adopting robust morphological classifications as previously presented (Kelvin et al.) for a sample of 3727 galaxies taken from the Galaxy And Mass Assembly survey, we define a local volume and stellar mass limited sub-sample of 2711 galaxies to a lower stellar mass limit of M=109.0M?. We confirm that the galaxy stellar mass function is well described by a double-Schechter function given by M*=1010.64M?, a1 = -0.43, ?*1=4.18dex-1Mpc-3, a2 = -1.50 and ?*2=0.74dex-1Mpc-3. The constituent morphological-type stellar mass functions are well sampled above our lower stellar mass limit, excepting the faint little blue spheroid population of galaxies. We find approximately 71+3-4 per cent of the stellar mass in the local Universe is found within spheroid-dominated galaxies; ellipticals and S0-Sas. The remaining 29+4-3 per cent falls predominantly within late-type disc-dominated systems, Sab-Scds and Sd-Irrs. Adopting reasonable bulge-to-total ratios implies that approximately half the stellar mass today resides in spheroidal structures, and half in disc structures. Within this local sample, we find approximate stellar mass proportions for E : S0-Sa : Sab-Scd : Sd-Irr of 34 : 37 : 24 : 5.