A joint SZ-X-ray-optical analysis of the dynamical state of 288 massive galaxy clusters

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Zenteno, A. (author)

A joint SZ-X-ray-optical analysis of the dynamical state of 288 massive galaxy clusters

Article/chapterEnglish2020

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2020-05-04
Oxford University Press (OUP),2020
printrdacarrier

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LIBRIS-ID:oai:DiVA.org:su-182854
https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-182854URI
https://doi.org/10.1093/mnras/staa1157DOI

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Language:English
Summary in:English

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Subject category:ref swepub-contenttype
Subject category:art swepub-publicationtype

Notes

We use imaging from the first three years of the Dark Energy Survey to characterize the dynamical state of 288 galaxy clusters at 0.1 less than or similar to z less than or similar to 0.9 detected in the South Pole Telescope (SPT) Sunyaev-Zeldovich (SZ) effect survey (SPT-SZ). We examine spatial offsets between the position of the brightest cluster galaxy (BCG) and the centre of the gas distribution as traced by the SPT-SZ centroid and by the X-ray centroid/peak position from Chandra and XMM data. We show that the radial distribution of offsets provides no evidence that SPT SZ-selected cluster samples include a higher fraction of mergers than X-ray-selected cluster samples. We use the offsets to classify the dynamical state of the clusters, selecting the 43 most disturbed clusters, with half of those at z greater than or similar to 0.5, a region seldom explored previously. We find that Schechter function fits to the galaxy population in disturbed clusters and relaxed clusters differ at z > 0.55 but not at lower redshifts. Disturbed clusters at z > 0.55 have steeper faint-end slopes and brighter characteristic magnitudes. Within the same redshift range, we find that the BCGs in relaxed clusters tend to be brighter than the BCGs in disturbed samples, while in agreement in the lower redshift bin. Possible explanations includes a higher merger rate, and a more efficient dynamical friction at high redshift. The red-sequence population is less affected by the cluster dynamical state than the general galaxy population.

Subject headings and genre

NATURVETENSKAP Fysik hsv//swe
NATURAL SCIENCES Physical Sciences hsv//eng
galaxies: evolution
galaxies: luminosity function
mass function
galaxies: clusters: general

Added entries (persons, corporate bodies, meetings, titles ...)

Hernandez-Lang, D. (author)
Klein, M. (author)
Cervantes, C. Vergara (author)
Hollowood, D. L. (author)
Bhargava, S. (author)
Palmese, A. (author)
Strazzullo, V. (author)
Romer, A. K. (author)
Mohr, J. J. (author)
Jeltema, T. (author)
Saro, A. (author)
Lidman, C. (author)
Gruen, D. (author)
Ojeda, V. (author)
Katzenberger, A. (author)
Aguena, M. (author)
Allam, S. (author)
Avila, S. (author)
Bayliss, M. (author)
Bertin, E. (author)
Brooks, D. (author)
Buckley-Geer, E. (author)
Burke, D. L. (author)
Capasso, RaffaellaStockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)raca1834 (author)
Carnero Rosell, A. (author)
Carrasco Kind, M. (author)
Carretero, J. (author)
Castander, F. J. (author)
Costanzi, M. (author)
da Costa, L. N. (author)
De Vicente, J. (author)
Desai, S. (author)
Diehl, H. T. (author)
Doel, P. (author)
Eifler, T. F. (author)
Evrard, A. E. (author)
Flaugher, B. (author)
Floyd, B. (author)
Fosalba, P. (author)
Frieman, J. (author)
Garcia-Bellido, J. (author)
Gerdes, D. W. (author)
Gonzalez, J. R. (author)
Gruendl, R. A. (author)
Gschwend, J. (author)
Gutierrez, G. (author)
Hartley, W. G. (author)
Hinton, S. R. (author)
Honscheid, K. (author)
James, D. J. (author)
Kuehn, K. (author)
Lahav, O. (author)
Lima, M. (author)
McDonald, M. (author)
Maia, M. A. G. (author)
March, M. (author)
Melchior, P. (author)
Menanteau, F. (author)
Miquel, R. (author)
Ogando, R. L. C. (author)
Paz-Chinchon, F. (author)
Plazas, A. A. (author)
Roodman, A. (author)
Rykoff, E. S. (author)
Sanchez, E. (author)
Scarpine, V. (author)
Schubnell, M. (author)
Serrano, S. (author)
Sevilla-Noarbe, I. (author)
Smith, M. (author)
Soares-Santos, M. (author)
Suchyta, E. (author)
Swanson, M. E. C. (author)
Tarle, G. (author)
Thomas, D. (author)
Varga, T. N. (author)
Walker, A. R. (author)
Wilkinson, R. D. (author)
Stockholms universitetFysikum (creator_code:org_t)

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In:Monthly notices of the Royal Astronomical Society: Oxford University Press (OUP)495:1, s. 705-7250035-87111365-2966

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By the author/editor: Zenteno, A.; Hernandez-Lang, ...; Klein, M.; Cervantes, C. Ve ...; Hollowood, D. L.; Bhargava, S.; show more...; Palmese, A.; Strazzullo, V.; Romer, A. K.; Mohr, J. J.; Jeltema, T.; Saro, A.; Lidman, C.; Gruen, D.; Ojeda, V.; Katzenberger, A.; Aguena, M.; Allam, S.; Avila, S.; Bayliss, M.; Bertin, E.; Brooks, D.; Buckley-Geer, E.; Burke, D. L.; Capasso, Raffael ...; Carnero Rosell, ...; Carrasco Kind, M ...; Carretero, J.; Castander, F. J.; Costanzi, M.; da Costa, L. N.; De Vicente, J.; Desai, S.; Diehl, H. T.; Doel, P.; Eifler, T. F.; Evrard, A. E.; Flaugher, B.; Floyd, B.; Fosalba, P.; Frieman, J.; Garcia-Bellido, ...; Gerdes, D. W.; Gonzalez, J. R.; Gruendl, R. A.; Gschwend, J.; Gutierrez, G.; Hartley, W. G.; Hinton, S. R.; Honscheid, K.; James, D. J.; Kuehn, K.; Lahav, O.; Lima, M.; McDonald, M.; Maia, M. A. G.; March, M.; Melchior, P.; Menanteau, F.; Miquel, R.; Ogando, R. L. C.; Paz-Chinchon, F.; Plazas, A. A.; Roodman, A.; Rykoff, E. S.; Sanchez, E.; Scarpine, V.; Schubnell, M.; Serrano, S.; Sevilla-Noarbe, ...; Smith, M.; Soares-Santos, M ...; Suchyta, E.; Swanson, M. E. C ...; Tarle, G.; Thomas, D.; Varga, T. N.; Walker, A. R.; Wilkinson, R. D.; show less...

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