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

I. K. Baldry; S. P. Driver; J. Loveday; E. N. Taylor; L. S. Kelvin; J. Liske; P. Norberg; 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

doi:10.1111/j.1365-2966.2012.20340.x

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

I. K. Baldry^*, S. P. Driver, J. Loveday, E. N. Taylor, L. S. Kelvin, J. Liske, P. Norberg, 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. SharpR. J. Tuffs

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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Abstract

We determine the low-redshift field galaxy stellar mass function (GSMF) using an area of 143deg ² from the first three years of the Galaxy And Mass Assembly (GAMA) survey. The magnitude limits of this redshift survey are r < 19.4mag over two-thirds and 19.8mag 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 H ₀= 70kms ^-1Mpc ^-1, the GSMF is well described between 10 ⁸ and 10 ^11.5M _⊙ using a double Schechter function with M ^* = 10 ^10.66 M _⊙, π ₁ ^* = 3.96 × 10 ^-3 Mpc ^-3, α ₁=-0.35, π ₂ ^* = 0.79 × 10 ^-3 Mpc ^-3 and α ₂=-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 < 17.8mag). The upturn in the GSMF is also seen directly in the i-band and K-band galaxy luminosity functions. Accurately measuring the GSMF below 10 ⁸M _⊙ is possible within the GAMA survey volume but as expected requires deeper imaging data to address the contribution from low surface-brightness galaxies.

Original language	English
Pages (from-to)	621-634
Number of pages	14
Journal	Monthly Notices of the Royal Astronomical Society
Volume	421
Issue number	1
DOIs	https://doi.org/10.1111/j.1365-2966.2012.20340.x
Publication status	Published - Mar 2012
Externally published	Yes

Keywords

Galaxies: distances and redshifts
Galaxies: fundamental parameters
Galaxies: luminosity function, mass function

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10.1111/j.1365-2966.2012.20340.x

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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., ... Tuffs, R. J. (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. https://doi.org/10.1111/j.1365-2966.2012.20340.x

@article{dd1675b6c9d24cb5b0e6dc1757cca7f2,

title = "Galaxy And Mass Assembly (GAMA): The galaxy stellar mass function at z < 0.06",

abstract = "We determine the low-redshift field galaxy stellar mass function (GSMF) using an area of 143deg 2 from the first three years of the Galaxy And Mass Assembly (GAMA) survey. The magnitude limits of this redshift survey are r < 19.4mag over two-thirds and 19.8mag 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 H 0= 70kms -1Mpc -1, the GSMF is well described between 10 8 and 10 11.5M ⊙ using a double Schechter function with M * = 10 10.66 M ⊙, π 1 * = 3.96 × 10 -3 Mpc -3, α 1=-0.35, π 2 * = 0.79 × 10 -3 Mpc -3 and α 2=-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 < 17.8mag). The upturn in the GSMF is also seen directly in the i-band and K-band galaxy luminosity functions. Accurately measuring the GSMF below 10 8M ⊙ is possible within the GAMA survey volume but as expected requires deeper imaging data to address the contribution from low surface-brightness galaxies.",

keywords = "Galaxies: distances and redshifts, Galaxies: fundamental parameters, Galaxies: luminosity function, mass function",

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

year = "2012",

month = mar,

doi = "10.1111/j.1365-2966.2012.20340.x",

language = "English",

volume = "421",

pages = "621--634",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "1",

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Baldry, IK, Driver, SP, Loveday, J, Taylor, EN, Kelvin, LS, Liske, J, Norberg, P, Robotham, ASG, Brough, S, Hopkins, AM, Bamford, SP, Peacock, JA, Bland-Hawthorn, J, Conselice, CJ, Croom, SM, Jones, DH, Parkinson, HR, Popescu, CC, Prescott, M, Sharp, RG & Tuffs, RJ 2012, 'Galaxy And Mass Assembly (GAMA): The galaxy stellar mass function at z < 0.06', Monthly Notices of the Royal Astronomical Society, vol. 421, no. 1, pp. 621-634. https://doi.org/10.1111/j.1365-2966.2012.20340.x

TY - JOUR

T1 - Galaxy And Mass Assembly (GAMA)

T2 - The galaxy stellar mass function at z < 0.06

AU - Baldry, I. K.

AU - Driver, S. P.

AU - Loveday, J.

AU - Taylor, E. N.

AU - Kelvin, L. S.

AU - Liske, J.

AU - Norberg, P.

AU - Robotham, A. S G

AU - Brough, S.

AU - Hopkins, A. M.

AU - Bamford, S. P.

AU - Peacock, J. A.

AU - Bland-Hawthorn, J.

AU - Conselice, C. J.

AU - Croom, S. M.

AU - Jones, D. H.

AU - Parkinson, H. R.

AU - Popescu, C. C.

AU - Prescott, M.

AU - Sharp, R. G.

AU - Tuffs, R. J.

PY - 2012/3

Y1 - 2012/3

N2 - We determine the low-redshift field galaxy stellar mass function (GSMF) using an area of 143deg 2 from the first three years of the Galaxy And Mass Assembly (GAMA) survey. The magnitude limits of this redshift survey are r < 19.4mag over two-thirds and 19.8mag 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 H 0= 70kms -1Mpc -1, the GSMF is well described between 10 8 and 10 11.5M ⊙ using a double Schechter function with M * = 10 10.66 M ⊙, π 1 * = 3.96 × 10 -3 Mpc -3, α 1=-0.35, π 2 * = 0.79 × 10 -3 Mpc -3 and α 2=-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 < 17.8mag). The upturn in the GSMF is also seen directly in the i-band and K-band galaxy luminosity functions. Accurately measuring the GSMF below 10 8M ⊙ is possible within the GAMA survey volume but as expected requires deeper imaging data to address the contribution from low surface-brightness galaxies.

AB - We determine the low-redshift field galaxy stellar mass function (GSMF) using an area of 143deg 2 from the first three years of the Galaxy And Mass Assembly (GAMA) survey. The magnitude limits of this redshift survey are r < 19.4mag over two-thirds and 19.8mag 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 H 0= 70kms -1Mpc -1, the GSMF is well described between 10 8 and 10 11.5M ⊙ using a double Schechter function with M * = 10 10.66 M ⊙, π 1 * = 3.96 × 10 -3 Mpc -3, α 1=-0.35, π 2 * = 0.79 × 10 -3 Mpc -3 and α 2=-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 < 17.8mag). The upturn in the GSMF is also seen directly in the i-band and K-band galaxy luminosity functions. Accurately measuring the GSMF below 10 8M ⊙ is possible within the GAMA survey volume but as expected requires deeper imaging data to address the contribution from low surface-brightness galaxies.

KW - Galaxies: distances and redshifts

KW - Galaxies: fundamental parameters

KW - Galaxies: luminosity function, mass function

UR - http://www.scopus.com/inward/record.url?scp=84863394810&partnerID=8YFLogxK

U2 - 10.1111/j.1365-2966.2012.20340.x

DO - 10.1111/j.1365-2966.2012.20340.x

M3 - Article

AN - SCOPUS:84863394810

SN - 0035-8711

VL - 421

SP - 621

EP - 634

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 1

ER -

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

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