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  A new RASS galaxy cluster catalogue with low contamination extending to z ∼ 1 in the DES overlap region

Klein, M., Grandis, S., Mohr, J. J., Paulus, M., Abbott, T. M. C., Annis, J., et al. (2019). A new RASS galaxy cluster catalogue with low contamination extending to z ∼ 1 in the DES overlap region. Monthly Notices of the Royal Astronomical Society, 488(1), 739-769. doi:10.1093/mnras/stz1463.

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Klein, M.1, Author              
Grandis, S., Author
Mohr, J. J.2, Author              
Paulus, M., Author
Abbott, T. M. C., Author
Annis, J., Author
Avila, S., Author
Bertin, E., Author
Brooks, D., Author
Buckley-Geer, E., Author
Rosell, A. Carnero, Author
Kind, M. Carrasco, Author
Carretero, J., Author
Castander, F. J., Author
Cunha, C. E., Author
D’Andrea, C. B., Author
da Costa, L. N., Author
Vicente, J. De, Author
Desai, S., Author
Diehl, H. T., Author
Dietrich, J. P., AuthorDoel, P., AuthorEvrard, A. E., AuthorFlaugher, B., AuthorFosalba, P., AuthorFrieman, J., AuthorGarcía-Bellido, J., AuthorGaztanaga, E., AuthorGiles, P. A., AuthorGruen, D., AuthorGruendl, R. A., AuthorGschwend, J., AuthorGutierrez, G., AuthorHartley, W. G., AuthorHollowood, D. L., AuthorHonscheid, K., AuthorHoyle, B.2, Author              James, D. J., AuthorJeltema, T., AuthorKuehn, K., AuthorKuropatkin, N., AuthorLima, M., AuthorMaia, M. A. G., AuthorMarch, M., AuthorMarshall, J. L., AuthorMenanteau, F., AuthorMiquel, R., AuthorOgando, R. L. C., AuthorPlazas, A. A., AuthorRomer, A. K., AuthorRoodman, A., AuthorSanchez, E., AuthorScarpine, V., AuthorSchindler, R., AuthorSerrano, S., AuthorSevilla-Noarbe, I., AuthorSmith, M., AuthorSmith, R. C., AuthorSoares-Santos, M., AuthorSobreira, F., AuthorSuchyta, E., AuthorSwanson, M. E. C., AuthorTarle, G., AuthorThomas, D., AuthorVikram, V., Author more..
1High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society, ou_159890              
2Optical and Interpretative Astronomy, MPI for Extraterrestrial Physics, Max Planck Society, ou_159895              


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 Abstract: We present the MARD-Y3 catalogue of between 1086 and 2171 galaxy clusters (52 per cent and 65 per cent new) produced using multicomponent matched filter (MCMF) follow-up in 5000 deg2 of DES-Y3 optical data of the ∼20 000 overlapping ROSAT All-Sky Survey source catalogue (2RXS) X-ray sources. Optical counterparts are identified as peaks in galaxy richness as a function of redshift along the line of sight towards each 2RXS source within a search region informed by an X-ray prior. All peaks are assigned a probability fcont of being a random superposition. The clusters lie at 0.02 < z < 1.1 with more than 100 clusters at z > 0.5. Residual contamination is 2.6 per cent and 9.6 per cent for the cuts adopted here. For each cluster we present the optical centre, redshift, rest frame X-ray luminosity, M500 mass, coincidence with NWAY infrared sources, and estimators of dynamical state. About 2 per cent of MARD-Y3 clusters have multiple possible counterparts, the photo-z’s are high quality with σΔz/(1 + z) = 0.0046, and ∼1 per cent of clusters exhibit evidence of X-ray luminosity boosting from emission by cluster active galactic nuclei. Comparison with other catalogues (MCXC, RM, SPT-SZ, Planck) is performed to test consistency of richness, luminosity, and mass estimates. We measure the MARD-Y3 X-ray luminosity function and compare it to the expectation from a fiducial cosmology and externally calibrated luminosity- and richness–mass relations. Agreement is good, providing evidence that MARD-Y3 has low contamination and can be understood as a simple two step selection – X-ray and then optical – of an underlying cluster population described by the halo mass function.


 Dates: 2019-05-29
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1093/mnras/stz1463
 Degree: -



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Title: Monthly Notices of the Royal Astronomical Society
  Other : Mon. Not. R. Astron. Soc.
Source Genre: Journal
Publ. Info: Oxford : Oxford University Press
Pages: - Volume / Issue: 488 (1) Sequence Number: - Start / End Page: 739 - 769 Identifier: ISSN: 1365-8711
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000024150