Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-10-07
Astrophys.J.631:208-230,2005
Astronomy and Astrophysics
Astrophysics
accepted by ApJ; full resolution figures available at http://sdss.physics.nyu.edu/vagc/lowlum.ps.gz; associated data files a
Scientific paper
10.1086/431416
We examine a sample of low redshift (10 < d < 150 Mpc) galaxies including galaxies with r-band absolute magnitudes as faint as -12.5 (for h=1), selected from the Sloan Digital Sky Survey Data Release 2 (SDSS). The sample is unique in containing galaxies of extremely low luminosities in a wide range of environments, selected with uniform and well-understood criteria. We present the luminosity function as well as the broad-band properties of low luminosity galaxies in this sample. A Schechter function is an insufficient parameterization of the r-band luminosity function; there is an upturn in the slope at low luminosities. The resulting slope at low luminosities in this sample is around -1.3. However, we almost certainly miss a large number of galaxies at very low luminosities due to low surface brightness selection effects, and we estimate that the true low luminosity slope may be as steep or steeper than -1.5. The results here are consistent with previous SDSS results and, in the g-band, roughly consistent with the results of the Two degree Field Galaxy Redshift Survey. Extremely low luminosity galaxies are predominantly blue, low surface brightness, exponential disks.
Blanton Michael R.
Brinkmann John
Fukugita Masataka
Loveday Jon
Lupton Robert H.
No associations
LandOfFree
The properties and luminosity function of extremely low luminosity galaxies 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 The properties and luminosity function of extremely low luminosity galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The properties and luminosity function of extremely low luminosity galaxies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-215689