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  On the relative bias of void tracers in the Dark Energy Survey

Pollina, G., Hamaus, N., Paech, K., Dolag, K., Weller, J., Sánchez, C., et al. (2019). On the relative bias of void tracers in the Dark Energy Survey. Monthly Notices of the Royal Astronomical Society, 487(2), 2836-2852. doi:10.1093/mnras/stz1470.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0004-62F4-A Version Permalink: http://hdl.handle.net/21.11116/0000-0004-62F5-9
Genre: Journal Article

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Pollina, G., Author
Hamaus, N., Author
Paech, K., Author
Dolag, K.1, Author              
Weller, J., Author
Sánchez, C., Author
Rykoff, E. S., Author
Jain, B., Author
Abbott, T. M. C., Author
Allam, S., Author
Avila, S., Author
Bernstein, R. A., Author
Bertin, E., Author
Brooks, D., Author
Burke, D. L., Author
Rosell, A. Carnero, Author
Kind, M. Carrasco, Author
Carretero, J., Author
Cunha, C. E., Author
D’Andrea, C. B., Author
da Costa, L. N., AuthorVicente, J. De, AuthorDePoy, D. L., AuthorDesai, S., AuthorDiehl, H. T., AuthorDoel, P., AuthorEvrard, A. E., AuthorFlaugher, B., AuthorFosalba, P., AuthorFrieman, J., AuthorGarcía-Bellido, J., AuthorGerdes, D. W., AuthorGiannantonio, T., AuthorGruen, D., AuthorGschwend, J., AuthorGutierrez, G., AuthorHartley, W. G., AuthorHollowood, D. L., AuthorHonscheid, K., AuthorHoyle, B., AuthorJames, D. J., AuthorJeltema, T., AuthorKuehn, K., AuthorKuropatkin, N., AuthorLima, M., AuthorMarch, M., AuthorMarshall, J. L., AuthorMelchior, P., AuthorMenanteau, F., AuthorMiquel, R., AuthorPlazas, A. A., AuthorRomer, A. K., AuthorSanchez, E., AuthorScarpine, V., AuthorSchindler, R., AuthorSchubnell, M., AuthorSevilla-Noarbe, I., AuthorSmith, M., AuthorSoares-Santos, M., AuthorSobreira, F., AuthorSuchyta, E., AuthorTarle, G., AuthorWalker, A. R., AuthorWester, W., Author more..
Affiliations:
1Computational Structure Formation, MPI for Astrophysics, Max Planck Society, ou_2205642              

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 Abstract: Luminous tracers of large-scale structure are not entirely representative of the distribution of mass in our Universe. As they arise from the highest peaks in the matter density field, the spatial distribution of luminous objects is biased towards those peaks. On large scales, where density fluctuations are mild, this bias simply amounts to a constant offset in the clustering amplitude of the tracer, known as linear bias. In this work we focus on the relative bias between galaxies and galaxy clusters that are located inside and in the vicinity of cosmic voids, extended regions of relatively low density in the large-scale structure of the Universe. With the help of mock data we verify that the relation between galaxy and cluster overdensity around voids remains linear. Hence, the void-centric density profiles of different tracers can be linked by a single multiplicative constant. This amounts to the same value as the relative linear bias between tracers for the largest voids in the sample. For voids of small sizes, which typically arise in higher density regions, this constant has a higher value, possibly showing an environmental dependence similar to that observed for the linear bias itself. We confirm our findings by analysing data obtained during the first year of observations by the Dark Energy Survey. As a side product, we present the first catalogue of three-dimensional voids extracted from a photometric survey with a controlled photo-z uncertainty. Our results will be relevant in forthcoming analyses that attempt to use voids as cosmological probes.

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 Dates: 2019-05-31
 Publication Status: Published online
 Pages: -
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 Rev. Method: Peer
 Identifiers: DOI: 10.1093/mnras/stz1470
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Title: Monthly Notices of the Royal Astronomical Society
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Source Genre: Journal
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Publ. Info: OXFORD : OXFORD UNIV PRESS
Pages: - Volume / Issue: 487 (2) Sequence Number: - Start / End Page: 2836 - 2852 Identifier: ISSN: 0035-8711
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000021470