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SDSS-IV MaNGA: environmental dependence of stellar age and metallicity gradients in nearby galaxies
Zheng Zheng, Huiyuan Wang, Junqiang Ge +20
We present a study on the stellar age and metallicity distributions for 1105 galaxies using the STARLIGHT software on MaNGA integral field spectra. We derive age and metallicity gr…
Testing galaxy formation models with galaxy stellar mass functions
Seunghwan Lim, Houjun Mo, Ting-Wen Lan +1
We compare predictions of a number of empirical models and numerical simulations of galaxy formation to the conditional stellar mass functions (CSMF)of galaxies in groups of differ…
Mapping the real space distributions of galaxies in SDSS DR7: I. Two Point Correlation Functions
Feng Shi, Xiaohu Yang, Huiyuan Wang +8
Using a method to correct redshift space distortion (RSD) for individual galaxies, we mapped the real space distributions of galaxies in the Sloan Digital Sky Survey (SDSS) Data Re…
Galaxy groups in the 2MASS Redshift Survey
Yi Lu, Xiaohu Yang, Feng Shi +6
A galaxy group catalog is constructed from the 2MASS Redshift Survey (2MRS) with the use of a halo-based group finder. The halo mass associated with a group is estimated using a `G…
Differences in Halo-Scale Environments between Type 1 and Type 2 AGNs at Low Redshift
Ning Jiang, Huiyuan Wang, Houjun Mo +3
Using low-redshift (z<0.09) samples of AGNs, normal galaxies and groups of galaxies selected from the Sloan Digital Sky Survey (SDSS), we study the environments of type 1 and type…