LoCuSS: connecting the dominance and shape of brightest cluster galaxies with the assembly history of massive clusters
We study the luminosity gap, Δm12, between the first- and second-ranked galaxies in a sample of 59 massive (∼1015 M⊙) galaxy clusters, using data from the Hale Telescope, the Hubble Space Telescope, Chandra and Spitzer. We find that the Δm12 distribution, p(Δm12), is a declining function of Δm12 to...
Gespeichert in:
| Veröffentlicht in: | Monthly notices of the Royal Astronomical Society 2010-11, Vol.409 (1), p.169-183 |
|---|---|
| Hauptverfasser: | , , , , , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 183 |
|---|---|
| container_issue | 1 |
| container_start_page | 169 |
| container_title | Monthly notices of the Royal Astronomical Society |
| container_volume | 409 |
| creator | Smith, Graham P. Khosroshahi, Habib G. Dariush, A. Sanderson, A. J. R. Ponman, T. J. Stott, J. P. Haines, C. P. Egami, E. Stark, D. P. |
| description | We study the luminosity gap, Δm12, between the first- and second-ranked galaxies in a sample of 59 massive (∼1015 M⊙) galaxy clusters, using data from the Hale Telescope, the Hubble Space Telescope, Chandra and Spitzer. We find that the Δm12 distribution, p(Δm12), is a declining function of Δm12 to which we fitted a straight line: p(Δm12) ∝−(0.13 ± 0.02)Δm12. The fraction of clusters with ‘large’ luminosity gaps is p(Δm12≥ 1) = 0.37 ± 0.08, which represents a 3σ excess over that obtained from Monte Carlo simulations of a Schechter function that matches the mean cluster galaxy luminosity function. We also identify four clusters with ‘extreme’ luminosity gaps, Δm12≥ 2, giving a fraction of . More generally, large luminosity gap clusters are relatively homogeneous, with elliptical/discy brightest cluster galaxies (BCGs), cuspy gas density profiles (i.e. strong cool cores), high concentrations and low substructure fractions. In contrast, small luminosity gap clusters are heterogeneous, spanning the full range of boxy/elliptical/discy BCG morphologies, the full range of cool core strengths and dark matter concentrations, and have large substructure fractions. Taken together, these results imply that the amplitude of the luminosity gap is a function of both the formation epoch and the recent infall history of the cluster. ‘BCG dominance’ is therefore a phase that a cluster may evolve through and is not an evolutionary ‘cul-de-sac’. We also compare our results with semi-analytic model predictions based on the Millennium Simulation. None of the models is able to reproduce all of the observational results on Δm12, underlining the inability of the current generation of models to match the empirical properties of BCGs. We identify the strength of active galactic nucleus feedback and the efficiency with which cluster galaxies are replenished after they merge with the BCG in each model as possible causes of these discrepancies. |
| doi_str_mv | 10.1111/j.1365-2966.2010.17311.x |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_pasca</sourceid><recordid>TN_cdi_proquest_miscellaneous_849477308</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><oup_id>10.1111/j.1365-2966.2010.17311.x</oup_id><sourcerecordid>849477308</sourcerecordid><originalsourceid>FETCH-LOGICAL-c5191-b8018a324e5aaf14933cac13383ed6d4c8a1a8789fe7ceff35707c4e7f37b4263</originalsourceid><addsrcrecordid>eNp9kU2P0zAQhi0EEqXwHywkBJd0bY8TOxyQUAW7oPKxLEiIi-W6k8YlHyVOdtt_v0679AACX2yNn2dkz0sI5WzG4zrbzDhkaSLyLJsJNlYVcD7b3SOT08V9MmEM0kQrzh-SRyFsGGMSRDYh14t2PlxdvaSubRp0vW_WtC-RrtraN7ZxSG2zoqG0W6RtQZedX5c9hp66agg9dnRtK7vzGOiN78uDakPAelntaelD33b70atj0V_jbys8Jg8KWwV8crdPybe3b77OL5LFp_N389eLxKU858lSM64tCImptQWXOYCzjgNowFW2kk5bbrXSeYHKYVFAqphyElUBailFBlPy_Nh327W_hvhuU_vgsKpsg-0QjJa5VAqYjuSL_5I8UzzOUsW5TcnTP9BNO3RN_IdRGfAcUiki9OwOssHZqujiMH0w287XttsbAVIIrfPIvTpyN77C_emeMzPGazZmTNGMKZoxXnOI1-zMh49fDsfYAI4N2mH7Dz35S49WcrRiRrg7ebb7aTIFKjUX338YOH9_Oefq0nyGW5B5uZY</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>763193542</pqid></control><display><type>article</type><title>LoCuSS: connecting the dominance and shape of brightest cluster galaxies with the assembly history of massive clusters</title><source>Wiley Journals</source><source>Oxford Journals Open Access Collection</source><creator>Smith, Graham P. ; Khosroshahi, Habib G. ; Dariush, A. ; Sanderson, A. J. R. ; Ponman, T. J. ; Stott, J. P. ; Haines, C. P. ; Egami, E. ; Stark, D. P.</creator><creatorcontrib>Smith, Graham P. ; Khosroshahi, Habib G. ; Dariush, A. ; Sanderson, A. J. R. ; Ponman, T. J. ; Stott, J. P. ; Haines, C. P. ; Egami, E. ; Stark, D. P.</creatorcontrib><description>We study the luminosity gap, Δm12, between the first- and second-ranked galaxies in a sample of 59 massive (∼1015 M⊙) galaxy clusters, using data from the Hale Telescope, the Hubble Space Telescope, Chandra and Spitzer. We find that the Δm12 distribution, p(Δm12), is a declining function of Δm12 to which we fitted a straight line: p(Δm12) ∝−(0.13 ± 0.02)Δm12. The fraction of clusters with ‘large’ luminosity gaps is p(Δm12≥ 1) = 0.37 ± 0.08, which represents a 3σ excess over that obtained from Monte Carlo simulations of a Schechter function that matches the mean cluster galaxy luminosity function. We also identify four clusters with ‘extreme’ luminosity gaps, Δm12≥ 2, giving a fraction of . More generally, large luminosity gap clusters are relatively homogeneous, with elliptical/discy brightest cluster galaxies (BCGs), cuspy gas density profiles (i.e. strong cool cores), high concentrations and low substructure fractions. In contrast, small luminosity gap clusters are heterogeneous, spanning the full range of boxy/elliptical/discy BCG morphologies, the full range of cool core strengths and dark matter concentrations, and have large substructure fractions. Taken together, these results imply that the amplitude of the luminosity gap is a function of both the formation epoch and the recent infall history of the cluster. ‘BCG dominance’ is therefore a phase that a cluster may evolve through and is not an evolutionary ‘cul-de-sac’. We also compare our results with semi-analytic model predictions based on the Millennium Simulation. None of the models is able to reproduce all of the observational results on Δm12, underlining the inability of the current generation of models to match the empirical properties of BCGs. We identify the strength of active galactic nucleus feedback and the efficiency with which cluster galaxies are replenished after they merge with the BCG in each model as possible causes of these discrepancies.</description><identifier>ISSN: 0035-8711</identifier><identifier>EISSN: 1365-2966</identifier><identifier>DOI: 10.1111/j.1365-2966.2010.17311.x</identifier><identifier>CODEN: MNRAA4</identifier><language>eng</language><publisher>Oxford, UK: Blackwell Publishing Ltd</publisher><subject>Astronomy ; Clusters ; Computer simulation ; Dominance ; Earth, ocean, space ; Exact sciences and technology ; Galaxies ; galaxies: clusters: general ; galaxies: elliptical and lenticular ; galaxies: elliptical and lenticular, cD ; galaxies: haloes ; gravitational lensing: strong ; Luminosity ; Mathematical models ; Monte Carlo methods ; Space telescopes ; Stars & galaxies ; Substructures ; X-rays: galaxies</subject><ispartof>Monthly notices of the Royal Astronomical Society, 2010-11, Vol.409 (1), p.169-183</ispartof><rights>2010 The Authors. Journal compilation © 2010 RAS 2010</rights><rights>2010 The Authors. Journal compilation © 2010 RAS</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c5191-b8018a324e5aaf14933cac13383ed6d4c8a1a8789fe7ceff35707c4e7f37b4263</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1111%2Fj.1365-2966.2010.17311.x$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1111%2Fj.1365-2966.2010.17311.x$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,27924,27925,45574,45575</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=23422889$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Smith, Graham P.</creatorcontrib><creatorcontrib>Khosroshahi, Habib G.</creatorcontrib><creatorcontrib>Dariush, A.</creatorcontrib><creatorcontrib>Sanderson, A. J. R.</creatorcontrib><creatorcontrib>Ponman, T. J.</creatorcontrib><creatorcontrib>Stott, J. P.</creatorcontrib><creatorcontrib>Haines, C. P.</creatorcontrib><creatorcontrib>Egami, E.</creatorcontrib><creatorcontrib>Stark, D. P.</creatorcontrib><title>LoCuSS: connecting the dominance and shape of brightest cluster galaxies with the assembly history of massive clusters</title><title>Monthly notices of the Royal Astronomical Society</title><addtitle>Monthly Notices of the Royal Astronomical Society</addtitle><addtitle>Monthly Notices of the Royal Astronomical Society</addtitle><description>We study the luminosity gap, Δm12, between the first- and second-ranked galaxies in a sample of 59 massive (∼1015 M⊙) galaxy clusters, using data from the Hale Telescope, the Hubble Space Telescope, Chandra and Spitzer. We find that the Δm12 distribution, p(Δm12), is a declining function of Δm12 to which we fitted a straight line: p(Δm12) ∝−(0.13 ± 0.02)Δm12. The fraction of clusters with ‘large’ luminosity gaps is p(Δm12≥ 1) = 0.37 ± 0.08, which represents a 3σ excess over that obtained from Monte Carlo simulations of a Schechter function that matches the mean cluster galaxy luminosity function. We also identify four clusters with ‘extreme’ luminosity gaps, Δm12≥ 2, giving a fraction of . More generally, large luminosity gap clusters are relatively homogeneous, with elliptical/discy brightest cluster galaxies (BCGs), cuspy gas density profiles (i.e. strong cool cores), high concentrations and low substructure fractions. In contrast, small luminosity gap clusters are heterogeneous, spanning the full range of boxy/elliptical/discy BCG morphologies, the full range of cool core strengths and dark matter concentrations, and have large substructure fractions. Taken together, these results imply that the amplitude of the luminosity gap is a function of both the formation epoch and the recent infall history of the cluster. ‘BCG dominance’ is therefore a phase that a cluster may evolve through and is not an evolutionary ‘cul-de-sac’. We also compare our results with semi-analytic model predictions based on the Millennium Simulation. None of the models is able to reproduce all of the observational results on Δm12, underlining the inability of the current generation of models to match the empirical properties of BCGs. We identify the strength of active galactic nucleus feedback and the efficiency with which cluster galaxies are replenished after they merge with the BCG in each model as possible causes of these discrepancies.</description><subject>Astronomy</subject><subject>Clusters</subject><subject>Computer simulation</subject><subject>Dominance</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>Galaxies</subject><subject>galaxies: clusters: general</subject><subject>galaxies: elliptical and lenticular</subject><subject>galaxies: elliptical and lenticular, cD</subject><subject>galaxies: haloes</subject><subject>gravitational lensing: strong</subject><subject>Luminosity</subject><subject>Mathematical models</subject><subject>Monte Carlo methods</subject><subject>Space telescopes</subject><subject>Stars & galaxies</subject><subject>Substructures</subject><subject>X-rays: galaxies</subject><issn>0035-8711</issn><issn>1365-2966</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><recordid>eNp9kU2P0zAQhi0EEqXwHywkBJd0bY8TOxyQUAW7oPKxLEiIi-W6k8YlHyVOdtt_v0679AACX2yNn2dkz0sI5WzG4zrbzDhkaSLyLJsJNlYVcD7b3SOT08V9MmEM0kQrzh-SRyFsGGMSRDYh14t2PlxdvaSubRp0vW_WtC-RrtraN7ZxSG2zoqG0W6RtQZedX5c9hp66agg9dnRtK7vzGOiN78uDakPAelntaelD33b70atj0V_jbys8Jg8KWwV8crdPybe3b77OL5LFp_N389eLxKU858lSM64tCImptQWXOYCzjgNowFW2kk5bbrXSeYHKYVFAqphyElUBailFBlPy_Nh327W_hvhuU_vgsKpsg-0QjJa5VAqYjuSL_5I8UzzOUsW5TcnTP9BNO3RN_IdRGfAcUiki9OwOssHZqujiMH0w287XttsbAVIIrfPIvTpyN77C_emeMzPGazZmTNGMKZoxXnOI1-zMh49fDsfYAI4N2mH7Dz35S49WcrRiRrg7ebb7aTIFKjUX338YOH9_Oefq0nyGW5B5uZY</recordid><startdate>20101121</startdate><enddate>20101121</enddate><creator>Smith, Graham P.</creator><creator>Khosroshahi, Habib G.</creator><creator>Dariush, A.</creator><creator>Sanderson, A. J. R.</creator><creator>Ponman, T. J.</creator><creator>Stott, J. P.</creator><creator>Haines, C. P.</creator><creator>Egami, E.</creator><creator>Stark, D. P.</creator><general>Blackwell Publishing Ltd</general><general>Wiley-Blackwell</general><general>Oxford University Press</general><scope>BSCLL</scope><scope>IQODW</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>7TG</scope><scope>KL.</scope></search><sort><creationdate>20101121</creationdate><title>LoCuSS: connecting the dominance and shape of brightest cluster galaxies with the assembly history of massive clusters</title><author>Smith, Graham P. ; Khosroshahi, Habib G. ; Dariush, A. ; Sanderson, A. J. R. ; Ponman, T. J. ; Stott, J. P. ; Haines, C. P. ; Egami, E. ; Stark, D. P.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c5191-b8018a324e5aaf14933cac13383ed6d4c8a1a8789fe7ceff35707c4e7f37b4263</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Astronomy</topic><topic>Clusters</topic><topic>Computer simulation</topic><topic>Dominance</topic><topic>Earth, ocean, space</topic><topic>Exact sciences and technology</topic><topic>Galaxies</topic><topic>galaxies: clusters: general</topic><topic>galaxies: elliptical and lenticular</topic><topic>galaxies: elliptical and lenticular, cD</topic><topic>galaxies: haloes</topic><topic>gravitational lensing: strong</topic><topic>Luminosity</topic><topic>Mathematical models</topic><topic>Monte Carlo methods</topic><topic>Space telescopes</topic><topic>Stars & galaxies</topic><topic>Substructures</topic><topic>X-rays: galaxies</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Smith, Graham P.</creatorcontrib><creatorcontrib>Khosroshahi, Habib G.</creatorcontrib><creatorcontrib>Dariush, A.</creatorcontrib><creatorcontrib>Sanderson, A. J. R.</creatorcontrib><creatorcontrib>Ponman, T. J.</creatorcontrib><creatorcontrib>Stott, J. P.</creatorcontrib><creatorcontrib>Haines, C. P.</creatorcontrib><creatorcontrib>Egami, E.</creatorcontrib><creatorcontrib>Stark, D. P.</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><jtitle>Monthly notices of the Royal Astronomical Society</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Smith, Graham P.</au><au>Khosroshahi, Habib G.</au><au>Dariush, A.</au><au>Sanderson, A. J. R.</au><au>Ponman, T. J.</au><au>Stott, J. P.</au><au>Haines, C. P.</au><au>Egami, E.</au><au>Stark, D. P.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>LoCuSS: connecting the dominance and shape of brightest cluster galaxies with the assembly history of massive clusters</atitle><jtitle>Monthly notices of the Royal Astronomical Society</jtitle><stitle>Monthly Notices of the Royal Astronomical Society</stitle><addtitle>Monthly Notices of the Royal Astronomical Society</addtitle><date>2010-11-21</date><risdate>2010</risdate><volume>409</volume><issue>1</issue><spage>169</spage><epage>183</epage><pages>169-183</pages><issn>0035-8711</issn><eissn>1365-2966</eissn><coden>MNRAA4</coden><abstract>We study the luminosity gap, Δm12, between the first- and second-ranked galaxies in a sample of 59 massive (∼1015 M⊙) galaxy clusters, using data from the Hale Telescope, the Hubble Space Telescope, Chandra and Spitzer. We find that the Δm12 distribution, p(Δm12), is a declining function of Δm12 to which we fitted a straight line: p(Δm12) ∝−(0.13 ± 0.02)Δm12. The fraction of clusters with ‘large’ luminosity gaps is p(Δm12≥ 1) = 0.37 ± 0.08, which represents a 3σ excess over that obtained from Monte Carlo simulations of a Schechter function that matches the mean cluster galaxy luminosity function. We also identify four clusters with ‘extreme’ luminosity gaps, Δm12≥ 2, giving a fraction of . More generally, large luminosity gap clusters are relatively homogeneous, with elliptical/discy brightest cluster galaxies (BCGs), cuspy gas density profiles (i.e. strong cool cores), high concentrations and low substructure fractions. In contrast, small luminosity gap clusters are heterogeneous, spanning the full range of boxy/elliptical/discy BCG morphologies, the full range of cool core strengths and dark matter concentrations, and have large substructure fractions. Taken together, these results imply that the amplitude of the luminosity gap is a function of both the formation epoch and the recent infall history of the cluster. ‘BCG dominance’ is therefore a phase that a cluster may evolve through and is not an evolutionary ‘cul-de-sac’. We also compare our results with semi-analytic model predictions based on the Millennium Simulation. None of the models is able to reproduce all of the observational results on Δm12, underlining the inability of the current generation of models to match the empirical properties of BCGs. We identify the strength of active galactic nucleus feedback and the efficiency with which cluster galaxies are replenished after they merge with the BCG in each model as possible causes of these discrepancies.</abstract><cop>Oxford, UK</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1111/j.1365-2966.2010.17311.x</doi><tpages>15</tpages><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0035-8711 |
| ispartof | Monthly notices of the Royal Astronomical Society, 2010-11, Vol.409 (1), p.169-183 |
| issn | 0035-8711 1365-2966 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_849477308 |
| source | Wiley Journals; Oxford Journals Open Access Collection |
| subjects | Astronomy Clusters Computer simulation Dominance Earth, ocean, space Exact sciences and technology Galaxies galaxies: clusters: general galaxies: elliptical and lenticular galaxies: elliptical and lenticular, cD galaxies: haloes gravitational lensing: strong Luminosity Mathematical models Monte Carlo methods Space telescopes Stars & galaxies Substructures X-rays: galaxies |
| title | LoCuSS: connecting the dominance and shape of brightest cluster galaxies with the assembly history of massive clusters |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-26T03%3A48%3A20IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_pasca&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=LoCuSS:%20connecting%20the%20dominance%20and%20shape%20of%20brightest%20cluster%20galaxies%20with%20the%20assembly%20history%20of%20massive%20clusters&rft.jtitle=Monthly%20notices%20of%20the%20Royal%20Astronomical%20Society&rft.au=Smith,%20Graham%20P.&rft.date=2010-11-21&rft.volume=409&rft.issue=1&rft.spage=169&rft.epage=183&rft.pages=169-183&rft.issn=0035-8711&rft.eissn=1365-2966&rft.coden=MNRAA4&rft_id=info:doi/10.1111/j.1365-2966.2010.17311.x&rft_dat=%3Cproquest_pasca%3E849477308%3C/proquest_pasca%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=763193542&rft_id=info:pmid/&rft_oup_id=10.1111/j.1365-2966.2010.17311.x&rfr_iscdi=true |