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Galaxy And Mass Assembly (GAMA): the galaxy stellar mass function at z < 0.06

Baldry, I.K.; Driver, S.P.; Loveday, J.; Taylor, E.N.; Kelvin, L.S.; Liske, J.; Norberg, P.; Robotham, A.S.G.; Brough, S.; Hopkins, A.M.; Bamford, S.P.; Peacock, J.A.; Bland-Hawthorn, J.; Conselice, C.J.; Croom, S.M.; Jones, D.H.; Parkinson, H.R.; Popescu, C.C.; Prescott, M.; Sharp, R.G.; Tuffs, R.J.

Galaxy And Mass Assembly (GAMA): the galaxy stellar mass function at z < 0.06 Thumbnail


I.K. Baldry

S.P. Driver

J. Loveday

E.N. Taylor

L.S. Kelvin

J. Liske

A.S.G. Robotham

S. Brough

A.M. Hopkins

S.P. Bamford

J.A. Peacock

J. Bland-Hawthorn

C.J. Conselice

S.M. Croom

D.H. Jones

H.R. Parkinson

C.C. Popescu

M. Prescott

R.G. Sharp

R.J. Tuffs


We determine the low-redshift field galaxy stellar mass function (GSMF) using an area of 143 deg2 from the first three years of the Galaxy And Mass Assembly (GAMA) survey. The magnitude limits of this redshift survey are r < 19.4 mag over two-thirds and 19.8 mag over one-third of the area. The GSMF is determined from a sample of 5210 galaxies using a density-corrected maximum volume method. This efficiently overcomes the issue of fluctuations in the number density versus redshift. With H0= 70 km s−1 Mpc−1, the GSMF is well described between 108 and 1011.5 M⊙ using a double Schechter function with Graphic, Graphic, α1=−0.35, Graphic and α2=−1.47. This result is more robust to uncertainties in the flow-model corrected redshifts than from the shallower Sloan Digital Sky Survey main sample (r < 17.8 mag). The upturn in the GSMF is also seen directly in the i-band and K-band galaxy luminosity functions. Accurately measuring the GSMF below 108 M⊙ is possible within the GAMA survey volume but as expected requires deeper imaging data to address the contribution from low surface-brightness galaxies.


Baldry, I., Driver, S., Loveday, J., Taylor, E., Kelvin, L., Liske, J., …Tuffs, R. (2012). Galaxy And Mass Assembly (GAMA): the galaxy stellar mass function at z < 0.06. Monthly Notices of the Royal Astronomical Society, 421(1), 621-634.

Journal Article Type Article
Publication Date Mar 21, 2012
Deposit Date Jun 3, 2014
Publicly Available Date Aug 22, 2014
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 421
Issue 1
Pages 621-634
Keywords Galaxies: distances and redshifts, Galaxies: fundamental parameters, Galaxies: luminosity function, Mass function.


Published Journal Article (2.3 Mb)

Copyright Statement
This article has been accepted for publication in Monthly notices of the Royal Astronomical Society © 2012 The Authors Monthly Notices of the Royal Astronomical Society © 2012 RAS Published by Oxford University Press on behalf of Royal Astronomical Society. All rights reserved.

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