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

被引：539
作者：
Baldry, I. K. [1 ]
Driver, S. P. [2 ,3 ]
Loveday, J. [4 ]
Taylor, E. N. [5 ,6 ]
Kelvin, L. S. [2 ,3 ]
Liske, J. [7 ]
Norberg, P. [8 ]
Robotham, A. S. G. [2 ,3 ]
Brough, S. [9 ]
Hopkins, A. M. [9 ]
Bamford, S. P. [10 ]
Peacock, J. A. [11 ]
Bland-Hawthorn, J. [5 ]
Conselice, C. J. [10 ]
Croom, S. M. [5 ]
Jones, D. H. [12 ]
Parkinson, H. R. [11 ]
Popescu, C. C. [13 ]
Prescott, M. [1 ]
Sharp, R. G. [14 ]
Tuffs, R. J. [15 ]
机构：
[1] Liverpool John Moores Univ, Astrophys Res Inst, Birkenhead CH14 1LD, Merseyside, England
[2] Univ Western Australia, Int Ctr Radio Astron Res, Crawley, WA 6009, Australia
[3] Univ St Andrews, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland
[4] Univ Sussex, Ctr Astron, Brighton BN1 9QH, E Sussex, England
[5] Univ Sydney, Sch Phys, Sydney Inst Astron, Sydney, NSW 2006, Australia
[6] Univ Melbourne, Sch Phys, Parkville, Vic 3010, Australia
[7] European So Observ, D-85748 Garching, Germany
[8] Univ Durham, Dept Phys, Inst Computat Cosmol, Durham DH1 3LE, England
[9] Ausralian Astron Observ, Epping, NSW 1710, Australia
[10] Univ Nottingham, Ctr Astron & Particle Theory, Nottingham NG7 2RD, England
[11] Univ Edinburgh, Royal Observ, Inst Astron, Edinburgh EH9 3HJ, Midlothian, Scotland
[12] Monash Univ, Sch Phys, Clayton, Vic 3800, Australia
[13] Univ Cent Lancashire, Jeremiah Horrocks Inst, Preston PR1 2HE, Lancs, England
[14] Australian Natl Univ, Res Sch Astron & Astrophys, Weston, ACT 2611, Australia
[15] Max Planck Inst Nucl Phys MPIK, D-69117 Heidelberg, Germany
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2012年 / 421卷 / 01期
基金：
英国科学技术设施理事会;
关键词：
galaxies: distances and redshifts; galaxies: fundamental parameters; galaxies: luminosity function; mass function; TO-LIGHT RATIOS; SPECTRAL ENERGY-DISTRIBUTION; SURFACE BRIGHTNESS GALAXIES; STAR-FORMATION HISTORIES; ACTIVE GALACTIC NUCLEI; DIGITAL SKY SURVEY; LUMINOSITY FUNCTION; REDSHIFT SURVEY; DWARF GALAXIES; DARK-MATTER;
D O I：
10.1111/j.1365-2966.2012.20340.x
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We determine the low-redshift field galaxy stellar mass function (GSMF) using an area of 143 deg(2) 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 H-0 = 70 km s (1) Mpc (1), the GSMF is well described between 10(8) and 10(11.5)M(circle dot) using a double Schechter function with M* = 10(10.66)M(circle dot), phi*(1) = 3.96 x 10(-3) Mpc(-3), alpha(1) =-0.35, phi*(2) = 0.79 x 10(-3) Mpc(-3) and alpha(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(8)M(circle dot) is possible within the GAMA survey volume but as expected requires deeper imaging data to address the contribution from low surface-brightness galaxies.
引用
收藏
页码：621 / 634
页数：14
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