PMO OpenIR  > 宇宙伽马暴、中子星及相关物理研究团组
SPIN ALIGNMENTS OF SPIRAL GALAXIES WITHIN THE LARGE-SCALE STRUCTURE FROM SDSS DR7
Zhang, YC; Yang, XH; Wang, HY; Wang, L; Luo, WT; Mo, HJ; van den Bosch, FC
2015
Source PublicationASTROPHYSICAL JOURNAL
Volume798Issue:1Pages:17
AbstractUsing a sample of spiral galaxies selected from the Sloan Digital Sky Survey Data Release 7 and Galaxy Zoo 2, we investigate the alignment of spin axes of spiral galaxies with their surrounding large-scale structure, which is characterized by the large-scale tidal field reconstructed from the data using galaxy groups above a certain mass threshold. We find that the spin axes only have weak tendencies to be aligned with (or perpendicular to) the intermediate (or minor) axis of the local tidal tensor. The signal is the strongest in a cluster environment where all three eigenvalues of the local tidal tensor are positive. Compared to the alignments between halo spins and the local tidal field obtained in N-body simulations, the above observational results are in best agreement with those for the spins of inner regions of halos, suggesting that the disk material traces the angular momentum of dark matter halos in the inner regions.
Subject Area天文和天体物理
Indexed BySCI
Language英语
WOS IDWOS:000347245100017
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/14857
Collection宇宙伽马暴、中子星及相关物理研究团组
Recommended Citation
GB/T 7714
Zhang, YC,Yang, XH,Wang, HY,et al. SPIN ALIGNMENTS OF SPIRAL GALAXIES WITHIN THE LARGE-SCALE STRUCTURE FROM SDSS DR7[J]. ASTROPHYSICAL JOURNAL,2015,798(1):17.
APA Zhang, YC.,Yang, XH.,Wang, HY.,Wang, L.,Luo, WT.,...&van den Bosch, FC.(2015).SPIN ALIGNMENTS OF SPIRAL GALAXIES WITHIN THE LARGE-SCALE STRUCTURE FROM SDSS DR7.ASTROPHYSICAL JOURNAL,798(1),17.
MLA Zhang, YC,et al."SPIN ALIGNMENTS OF SPIRAL GALAXIES WITHIN THE LARGE-SCALE STRUCTURE FROM SDSS DR7".ASTROPHYSICAL JOURNAL 798.1(2015):17.
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