Astronomy and Astrophysics – Astrophysics – Cosmology and Extragalactic Astrophysics
Scientific paper
2011-11-24
Mon.Not.Roy.Astron.Soc. 421 (2012) 621-634
Astronomy and Astrophysics
Astrophysics
Cosmology and Extragalactic Astrophysics
v2; 15 pages, 17 figures, accepted by MNRAS, references updated, minor changes
Scientific paper
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, the GSMF is well described between 10^8 and 10^11.5 Msun using a double Schechter function with mass^* = 10^10.66 Msun, 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 < 17.8 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 10^8 Msun is possible within the GAMA survey volume but as expected requires deeper imaging data to address the contribution from low surface-brightness galaxies.
Baldry Ivan K.
Bamford Steven P.
Bland-Hawthorn Jonathan
Brough Sarah
Conselice Christopher J.
No associations
LandOfFree
Galaxy And Mass Assembly (GAMA): The galaxy stellar mass function at z < 0.06 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Galaxy And Mass Assembly (GAMA): The galaxy stellar mass function at z < 0.06, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Galaxy And Mass Assembly (GAMA): The galaxy stellar mass function at z < 0.06 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-156675