期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 429, 期 1, 页码 458-468出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/sts349
关键词
methods: statistical; galaxies: evolution; galaxies: haloes; large-scale structure of Universe
资金
- NASA Herschel Science Center, JPL [1350371]
- NSF [AST-1055081, 0908241]
- NASA [NNX11A125G]
- Australian Research Council
- STFC [ST/F007043/1, ST/I001212/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/F007043/1, ST/I001212/1] Funding Source: researchfish
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [0908241] Funding Source: National Science Foundation
We analyse environmental correlations using mark clustering statistics with the mock galaxy catalogue constructed by Muldrew et al. (Paper I). We find that mark correlation functions are able to detect even a small dependence of galaxy properties on the environment, quantified by the overdensity 1 + delta, while such a small dependence would be difficult to detect by traditional methods. We then show that rank ordering the marks and using the rank as a weight is a simple way of comparing the correlation signals for different marks. With this we quantify to what extent fixed-aperture overdensities are sensitive to large-scale halo environments, nearest-neighbour overdensities are sensitive to small-scale environments within haloes and colour is a better tracer of overdensity than luminosity.
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