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Galaxy And Mass Assembly (GAMA): the stellar mass budget by galaxy type

Moffett, A.J.; Ingarfield, S.A.; Driver, S.P.; Robotham, A.S.G.; Kelvin, L.S.; Lange, R.; Meštrić, U.; Alpaslan, M.; Baldry, I.K.; Bland-Hawthorn, J.; Brough, S.; Cluver, M.E.; Davies, L.J.M.; Holwerda, B.W.; Hopkins, A.M.; Kafle, P.R.; Kennedy, R.; Norberg, P.; Taylor, E.N.

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A.J. Moffett

S.A. Ingarfield

S.P. Driver

A.S.G. Robotham

L.S. Kelvin

R. Lange

U. Meštrić

M. Alpaslan

I.K. Baldry

J. Bland-Hawthorn

S. Brough

M.E. Cluver

L.J.M. Davies

B.W. Holwerda

A.M. Hopkins

P.R. Kafle

R. Kennedy

E.N. Taylor


We report an expanded sample of visual morphological classifications from the Galaxy and Mass Assembly survey phase two, which now includes 7556 objects (previously 3727 in phase one). We define a local (z < 0.06) sample and classify galaxies into E, S0-Sa, SB0-SBa, Sab-Scd, SBab-SBcd, Sd-Irr, and ‘little blue spheroid’ types. Using these updated classifications, we derive stellar mass function fits to individual galaxy populations divided both by morphological class and more general spheroid- or disc-dominated categories with a lower mass limit of log(M*/M⊙) = 8 (one dex below earlier morphological mass function determinations). We find that all individual morphological classes and the combined spheroid-/bulge-dominated classes are well described by single Schechter stellar mass function forms. We find that the total stellar mass densities for individual galaxy populations and for the entire galaxy population are bounded within our stellar mass limits and derive an estimated total stellar mass density of ρ* = 2.5 × 108 M⊙ Mpc−3 h0.7, which corresponds to an approximately 4 per cent fraction of baryons found in stars. The mass contributions to this total stellar mass density by galaxies that are dominated by spheroidal components (E and S0-Sa classes) and by disc components (Sab-Scd and Sd-Irr classes) are approximately 70 and 30 per cent, respectively.


Moffett, A., Ingarfield, S., Driver, S., Robotham, A., Kelvin, L., Lange, R., …Taylor, E. (2016). Galaxy And Mass Assembly (GAMA): the stellar mass budget by galaxy type. Monthly Notices of the Royal Astronomical Society, 457(2), 1308-1319.

Journal Article Type Article
Acceptance Date Dec 3, 2015
Online Publication Date Feb 1, 2016
Publication Date Apr 1, 2016
Deposit Date Apr 5, 2016
Publicly Available Date Apr 7, 2016
Journal Monthly Notices of the Royal Astronomical Society
Print ISSN 0035-8711
Electronic ISSN 1365-2966
Publisher Royal Astronomical Society
Peer Reviewed Peer Reviewed
Volume 457
Issue 2
Pages 1308-1319
Related Public URLs


Published Journal Article (3.4 Mb)

Copyright Statement
This article has been published in Monthly Notices of the Royal Astronomical Society ©: 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.

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