scholarly journals A large sample of low surface brightness disk galaxies from SDSS

2008 ◽  
Vol 4 (S252) ◽  
pp. 131-132
Author(s):  
G. H. Zhong ◽  
Y. C. Liang ◽  
L. C. Deng ◽  
B. Zhang
Keyword(s):  
Surface Brightness ◽  
Stellar Populations ◽  
Disk Galaxies ◽  
Large Sample ◽  
Central Surface ◽  
Main Galaxy ◽  
Low Surface Brightness ◽  
Galaxy Sample

AbstractWe present the properties of a large sample (12,282) of nearly face-on low surface brightness disk galaxies selected from the main galaxy sample of SDSS-DR4. Those properties includes B-band central surface brightness μ0(B), scale lengths h, distances D, integrated magnitudes, colors and some resulted relations. This sample has μ0(B) from 22 to 24.5 mag arcsec−2 with a median value of 22.44 mag arcsec−2. They are quite bright with MB taking values from −18 to −23 mag with a median value of −20.08 mag. The disk scale lengths h are from 2 kpc to 19 kpc. There exist clear correlations between log h and MB, log h and log D. Both the optical-optical and optical-NIR color-color relations show most of them have a mix of young and old stellar populations.

scholarly journals The spectral properties of a large sample of low surface brightness disk galaxies

2008 ◽  
Vol 4 (S252) ◽  
pp. 119-120
Author(s):  
Y. C. Liang ◽  
G. H. Zhong ◽  
L. C. Deng ◽  
B. Zhang
Keyword(s):  
Spectral Properties ◽  
Surface Brightness ◽  
Disk Galaxies ◽  
Large Sample ◽  
Star Forming ◽  
Central Surface ◽  
Low Surface Brightness ◽  
Galaxy Sample ◽  
Stellar Masses ◽  
Lsb Galaxies

AbstractWe present the spectral properties of a large sample of nearly face-on low surface brightness (LSB) disk galaxies selected from the SDSS-DR4 main galaxy sample. About 12,282 LSB galaxies have been selected from the photometry database with their B-band central surface brightness μ0(B) ranging from 22 to 24.5 mag arcsec−2. About 7000 of such LSBGs have measured emission lines ([OII]3727, [OIII]5007, Hβ, Hα, [NII]6583) with the S/N ratio greater than 5σ. Their spectral diagnostic diagram of [NII]/Hα vs. [OIII]/Hβ shows that ~89% of them are star-forming galaxies, and ~11% could be classified as AGNs. The relations of μ0(B) vs. 12+log(O/H) and μ0(B) vs. stellar masses M* of these star-forming LSB galaxies show that their O/H and M* increase following the increasing μ0(B). The majority of these LSBGs are on the higher branch of metallicity.

scholarly journals The properties of a large sample of low surface brightness galaxies from SDSS

2009 ◽  
Vol 5 (S262) ◽  
pp. 213-216
Author(s):  
Y. C. Liang ◽  
G. H. Zhong ◽  
X. Y. Chen ◽  
D. Gao ◽  
F. Hammer ◽  
...  
Keyword(s):  
Surface Brightness ◽  
Stellar Populations ◽  
Disk Galaxies ◽  
Large Sample ◽  
Central Surface ◽  
Low Surface Brightness ◽  
Stellar Masses ◽  
Low Surface Brightness Galaxies ◽  
Lsb Galaxies

AbstractA large sample of low surface brightness (LSB) disk galaxies is selected from SDSS with B-band central surface brightness μ0(B) from 22 to 24.5 mag arcsec−2. Some of their properties are studied, such as magnitudes, surface brightness, scalelengths, colors, metallicities, stellar populations, stellar masses and multiwavelength SEDs from UV to IR etc. These properties of LSB galaxies have been compared with those of the galaxies with higher surface brightnesses. Then we check the variations of these properties following surface brightness.

scholarly journals Stellar Population Analysis on a Large Sample of Low Surface Brightness Galaxies

2012 ◽  
Vol 8 (S292) ◽  
pp. 154-154 ◽  
Author(s):  
Xiaoyan Chen ◽  
Ali Luo ◽  
Yanchun Liang
Keyword(s):  
Surface Brightness ◽  
Stellar Population ◽  
Population Analysis ◽  
Sloan Digital Sky Survey ◽  
Large Sample ◽  
Central Surface ◽  
Sky Survey ◽  
Low Surface Brightness ◽  
Galaxy Sample ◽  
Low Surface Brightness Galaxies

AbstractWe study the stellar populations of a large sample of nearly face-on disk Low Surface Brightness Galaxies (LSBGs), with B-band central surface brightness μ0(B) > 22 mag arcsec−2, selected from the Sloan Digital Sky Survey Data Release 4 (SDSS-DR4) main galaxy sample (similar to Zhong et al. 2008; Liang et al. 2010).

scholarly journals The Central Dynamics of Blue Low Surface Brightness Galaxies

2004 ◽  
Vol 220 ◽  
pp. 335-336
Author(s):  
Erik Zackrisson ◽  
Nils Bergvall
Keyword(s):  
Dark Matter ◽  
Density Profile ◽  
Surface Brightness ◽  
Cold Dark Matter ◽  
Central Density ◽  
Disk Galaxies ◽  
Rotation Curves ◽  
Central Surface ◽  
Low Surface Brightness ◽  
Low Surface Brightness Galaxies

We use optical, long-slit rotation curves to derive the slope of the central density profile in three blue disk galaxies with very faint central surface brightness values. We find the result to be in conflict with current cold dark matter predictions and to lend further support for pseudo-isothermal spheres as superior models for the dark halos of galaxies.

scholarly journals Lenses and Low Surface Brightness Disks

1983 ◽  
Vol 100 ◽  
pp. 253-254
Author(s):  
A. Bosma
Keyword(s):  
Surface Brightness ◽  
Disk Galaxies ◽  
Selection Effects ◽  
Central Surface ◽  
Low Surface Brightness ◽  
The Galaxy ◽  
Intrinsic Scatter ◽  
Limiting Surface ◽  
Disk Component ◽  
Exponential Disk

The 21.65-“law” for disk galaxies has been debated ever since Freeman's (1970) paper in which he found that for 28 out of 36 galaxies the extrapolated central surface brightness of the exponential disk component I0, follows this rule with little intrinsic scatter. Some people think it significant, while others invoke selection effects. Bosma and Freeman (1982) made a new attempt to clarify this problem by studying ratios of diameters of disk galaxies on the various Sky Surveys in a region of overlap. The limiting surface brightness levels were calibrated to be 24.6 and 25.6 magn/arcsec2 for the Palomar blue prints and the SRC J films, resp. The distribution of the ratio Γ = diameter (SRC) / diameter (PAL) gives a measure of the true distribution of Io if the galaxy has an exponential disk in the brightness interval 24.6 to 25.6; e.g. Io = 21.6 corresponds to Γ = 1.32, Io = 22.6 to Γ = 1.50 and Io = 23.6 to Γ = 1.90, etc.

A Wide Field CCD Survey for Low Surface Brightness Galaxies.II.Color Distributions, Stellar Populations, and Missing Baryons

1997 ◽  
Vol 114 ◽  
pp. 2448 ◽  
Author(s):  
Karen O'Neil ◽  
G. D. Bothun ◽  
J. Schombert ◽  
Mark E. Cornell ◽  
C. D. Impey
Keyword(s):  
Surface Brightness ◽  
Stellar Populations ◽  
Wide Field ◽  
Low Surface Brightness

scholarly journals HI in Karachentsev Objects Properties of new nearby Dwarf Galaxies

1999 ◽  
Vol 171 ◽  
pp. 299-306
Author(s):  
W.K. Huchtmeier
Keyword(s):  
Column Density ◽  
Detection Rate ◽  
Surface Brightness ◽  
Dwarf Galaxies ◽  
Disk Galaxies ◽  
Local Volume ◽  
Low Surface Brightness ◽  
Compact Array

AbstractThis is a report on HI observations of newly discovered nearby dwarf galaxies, most of which of low surface brightness, from the first section of the Karachentsev catalog. Observations were performed using the 100-m radiotelescope at Effelsberg, the Nançay radiotelescope, and the compact array of the Australia Telescope. We observed 220 galaxies with a detection rate of about 60%. 35 of the observed galaxies are located within the Local Volume (i.e., within 10 Mpc). The smallest detected galaxies have diameters around 0.3 kpc and HI-masses of a few times 106 solar masses. We confirm a correlation between HI column density and surface brightness of gas-rich disk galaxies.

scholarly journals The Size-Luminosity Relation of Disk Galaxies in EDisCS Clusters

2006 ◽  
Vol 2 (S235) ◽  
pp. 201-201
Author(s):  
Stephanie M. Gogarten ◽  
Julianne J. Dalcanton ◽  
Luc Simard ◽  
Gregory Rudnick ◽  
Vandana Desai ◽  
...  
Keyword(s):  
Surface Brightness ◽  
High Redshift ◽  
Disk Galaxies ◽  
Selection Effects ◽  
Distant Cluster ◽  
Cluster Survey ◽  
Low Surface Brightness ◽  
Advanced Camera For Surveys ◽  
Low Surface Brightness Galaxies

AbstractWe present the size-luminosity relation (SLR) for disk galaxies observed in eight clusters from the ESO Distant Cluster Survey (EDisCS). These clusters, at redshifts 0.4 < z < 0.8, were observed with the Hubble Space Telescope's Advanced Camera for Surveys. While we observe a change in the SLR with redshift, namely that there is an absence of low surface brightness galaxies at high redshift, we demonstrate that this could be a product of selection effects and thus is not a confirmation of evolution. We also compare the SLR for cluster and field galaxies in each redshift bin and see no significant effects of environment on the SLR.

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