scholarly journals The Properties of Isolated Main Galaxies in Sloan Digital Sky Survey Data Release 3 (SDSS DR3)

2006 ◽  
Vol 23 (2) ◽  
pp. 76-81 ◽  
Author(s):  
Xinfa Deng ◽  
Xinsheng Ma ◽  
Chenghong Luo ◽  
Qun Zhang ◽  
Qing-Hua Liao ◽  
...  
Keyword(s):  
Cluster Analysis ◽  
Survey Data ◽  
Sloan Digital Sky Survey ◽  
Early Type ◽  
Double Galaxy ◽  
Main Galaxy ◽  
Sky Survey ◽  
Data Release ◽  
Galaxy Sample

AbstractWe have constructed a Main galaxy subsample of 67777 galaxies with redshifts in the range 0.08 ≤ z ≤ 0.12 from the Sloan Digital Sky Survey Data Release 3. Using cluster analysis, two isolated Main galaxy samples were extracted from this subsample. The two isolated Main galaxy samples identified at different radii have the same properties. Additionally, we find fewer early-type galaxies in isolated Main galaxy samples than in a close double galaxy sample.

Further Investigation of the Effect of Galaxy Interactions on Star Formation

2013 ◽  
Vol 22 (2) ◽  
Author(s):  
Xin-Fa Deng ◽  
Fuyang Zhang
Keyword(s):  
Star Formation ◽  
Survey Data ◽  
Control Sample ◽  
Sloan Digital Sky Survey ◽  
Apparent Magnitude ◽  
Galaxy Interactions ◽  
Main Galaxy ◽  
Sky Survey ◽  
Data Release ◽  
Galaxy Sample

AbstractFrom the apparent magnitude-limited the Main galaxy sample of the Sloan Digital Sky Survey Data Release 7, we construct a paired galaxy sample and a control sample without close companions with the projected separations

Environmental Dependence of Different Colors for the Apparent Magnitude-Limited Main Galaxy Sample of the SDSS DR7

2013 ◽  
Vol 22 (2) ◽  
Author(s):  
Xin-Fa Deng ◽  
Cheng-Hong Luo ◽  
Yong Xin ◽  
Ping Wu
Keyword(s):  
Survey Data ◽  
Sloan Digital Sky Survey ◽  
Apparent Magnitude ◽  
Main Galaxy ◽  
Sky Survey ◽  
Data Release ◽  
Galaxy Sample ◽  
Environmental Dependence

AbstractThe apparent magnitude-limited Main galaxy sample of the Sloan Digital Sky Survey Data Release 7 is used to investigate the environmental dependence of

scholarly journals Influences of Galaxy Interactions on AGN Activity

2013 ◽  
Vol 30 ◽  
Author(s):  
Xin-Fa Deng ◽  
Guisheng Yu ◽  
Peng Jiang
Keyword(s):  
Survey Data ◽  
Strong Evidence ◽  
Sloan Digital Sky Survey ◽  
Limited Sample ◽  
Galaxy Interactions ◽  
Opposite Trend ◽  
Main Galaxy ◽  
Isolated Galaxies ◽  
Sky Survey ◽  
Data Release

AbstractUsing two volume-limited Main galaxy samples of the Sloan Digital Sky Survey Data Release 7 , we explore influences of galaxy interactions on AGN activity. It is found that in the faint volume-limited sample, paired galaxies have a slightly higher AGN fraction than isolated galaxies, whereas in the luminous volume-limited sample, an opposite trend can be observed. The significance is <1σ. Thus, we do not observe strong evidence that interactions or mergers likely trigger the AGN activity.

scholarly journals Baryon acoustic oscillations in the Sloan Digital Sky Survey Data Release 7 galaxy sample

2010 ◽  
Vol 401 (4) ◽  
pp. 2148-2168 ◽  
Author(s):  
Will J. Percival ◽  
Beth A. Reid ◽  
Daniel J. Eisenstein ◽  
Neta A. Bahcall ◽  
Tamas Budavari ◽  
...  
Keyword(s):  
Survey Data ◽  
Sloan Digital Sky Survey ◽  
Acoustic Oscillations ◽  
Sky Survey ◽  
Data Release ◽  
Galaxy Sample ◽  
Baryon Acoustic Oscillations

scholarly journals THE ENVIRONMENTAL DEPENDENCE OF GALAXY AGE AND STELLAR MASS IN THE REDSHIFT REGION 0.6 ≤ z ≤ 0.75

2019 ◽  
Vol 55 (2) ◽  
pp. 185-191
Author(s):  
Xin-Fa Deng
Keyword(s):  
Survey Data ◽  
Local Environment ◽  
Stellar Mass ◽  
Sloan Digital Sky Survey ◽  
Sky Survey ◽  
Data Release ◽  
Galaxy Sample ◽  
Environmental Dependence

In this work, I construct a LRG (Luminous Red Galaxy) sample with redshifts 0.6 ≤ z ≤ 0.75 from the Sloan Digital Sky Survey Data Release 15 (SDSS DR15), which contains 184172 CMASS LRGs and 27158 eBOSS LRGs, and examine the environmental dependence of galaxy age and stellar mass in this galaxy sample. I divide this LRG sample into subsamples with a redshift binning size of ∆z = 0.01, and analyze the environmental dependence of galaxy age and stellar mass for these subsamples in each redshift bin. Overall, galaxy age and stellar mass in the LRG sample with redshift 0.6 ≤ z ≤ 0.75 are very weakly correlated with the local environment, which shows that minimal environmental dependence of galaxy parameters can continue to larger redshifts.

scholarly journals Morphological Distribution of Galaxies in Some Nearby Clusters

2019 ◽  
Vol 28 (1) ◽  
pp. 98-109
Author(s):  
Mariwan A. Rasheed ◽  
Khalid K. Mohammad
Keyword(s):  
Survey Data ◽  
Concentration Index ◽  
Color Space ◽  
Sloan Digital Sky Survey ◽  
Early Type ◽  
Late Type ◽  
Sky Survey ◽  
Data Release ◽  
The Galaxy ◽  
Morphological Distribution

Abstract We study the morphological distribution of galaxies in some nearby clusters, using the Sloan Digital Sky Survey – Data Release 9 (SDSS-DR9). The segregation between early-type galaxies and late-type ones is investigated in g – r / u – g color space, using the color cut u – r = 2.22. The results are compared with those obtained using a color cut that changes with magnitude. They are found to be consistent, particularly for late-type galaxies. The results obtained by the fixed color-cut criterion are also found to be consistent with those obtained by the inverse concentration index parameter, especially for early-type galaxies. Comparable results are obtained for the stacked sample, whose morphologies, given by the fixed color-cut criterion are compared with the visual morphologies provided by the Galaxy Zoo project. A good degree of consistency is seen, which becomes more evident for late-type galaxies.

scholarly journals The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: measurement of the BAO and growth rate of structure of the luminous red galaxy sample from the anisotropic power spectrum between redshifts 0.6 and 1.0

2020 ◽  
Vol 498 (2) ◽  
pp. 2492-2531 ◽  
Author(s):  
Héctor Gil-Marín ◽  
Julián E Bautista ◽  
Romain Paviot ◽  
Mariana Vargas-Magaña ◽  
Sylvain de la Torre ◽  
...  
Keyword(s):  
Power Spectrum ◽  
Survey Data ◽  
High Redshift ◽  
Acoustic Oscillation ◽  
Sloan Digital Sky Survey ◽  
Full Agreement ◽  
Sky Survey ◽  
Consensus Values ◽  
Data Release ◽  
Galaxy Sample

ABSTRACT We analyse the clustering of the Sloan Digital Sky Survey IV extended Baryon Oscillation Spectroscopic Survey Data Release 16 luminous red galaxy sample (DR16 eBOSS LRG) in combination with the high redshift tail of the Sloan Digital Sky Survey III Baryon Oscillation Spectroscopic Survey Data Release 12 (DR12 BOSS CMASS). We measure the redshift space distortions (RSD) and also extract the longitudinal and transverse baryonic acoustic oscillation (BAO) scale from the anisotropic power spectrum signal inferred from 377 458 galaxies between redshifts 0.6 and 1.0, with the effective redshift of zeff = 0.698 and effective comoving volume of $2.72\, {\rm Gpc}^3$. After applying reconstruction, we measure the BAO scale and infer DH(zeff)/rdrag = 19.30 ± 0.56 and DM(zeff)/rdrag = 17.86 ± 0.37. When we perform an RSD analysis on the pre-reconstructed catalogue on the monopole, quadrupole, and hexadecapole we find, DH(zeff)/rdrag = 20.18 ± 0.78, DM(zeff)/rdrag = 17.49 ± 0.52 and fσ8(zeff) = 0.454 ± 0.046. We combine both sets of results along with the measurements in configuration space and report the following consensus values: DH(zeff)/rdrag = 19.77 ± 0.47, DM(zeff)/rdrag = 17.65 ± 0.30 and fσ8(zeff) = 0.473 ± 0.044, which are in full agreement with the standard ΛCDM and GR predictions. These results represent the most precise measurements within the redshift range 0.6 ≤ z ≤ 1.0 and are the culmination of more than 8 yr of SDSS observations.

scholarly journals K-band luminosity–density relation at fixed parameters or for different galaxy families

Open Physics ◽  
2020 ◽  
Vol 18 (1) ◽  
pp. 290-301
Author(s):  
Xin-Fa Deng ◽  
Xiao-Qing Wen ◽  
Yong Xin ◽  
Xiao-Ping Qi ◽  
Ying-Ping Ding
Keyword(s):  
Survey Data ◽  
Sloan Digital Sky Survey ◽  
Apparent Magnitude ◽  
Substantial Influence ◽  
Sky Survey ◽  
Data Release ◽  
Density Relation ◽  
Galaxy Sample ◽  
Environmental Dependence ◽  
K Band

AbstractUsing the apparent magnitude-limited Main galaxy sample of the Sloan Digital Sky Survey Data Release 10, we examine the K-band luminosity–density relation at fixed parameters or for different galaxy families. It is found that the limiting or fixing galaxy properties, such as galaxy morphology, stellar mass, and color, exert substantial influence on the environmental dependence of the K-band luminosity of galaxies, which suggests that the K-band luminosity–density relation is likely attributable to the relation between these galaxy properties and density.

scholarly journals Erratum: Baryon acoustic oscillations in the Sloan Digital Sky Survey Data Release 7 galaxy sample

2011 ◽  
Vol 417 (4) ◽  
pp. 3101-3102 ◽  
Author(s):  
◽  
Will J. Percival ◽  
Beth A. Reid ◽  
Daniel J. Eisenstein ◽  
Neta A. Bahcall ◽  
...  
Keyword(s):  
Survey Data ◽  
Sloan Digital Sky Survey ◽  
Acoustic Oscillations ◽  
Sky Survey ◽  
Data Release ◽  
Galaxy Sample ◽  
Baryon Acoustic Oscillations
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