{"id":"https://openalex.org/W7220992256","doi":"https://doi.org/10.48550/arxiv.2610.07581","title":"Stirred, not shaken: Dislodging $\u03c9$ Centauri from the Sausage galaxy through bar resonances","display_name":"Stirred, not shaken: Dislodging $\u03c9$ Centauri from the Sausage galaxy through bar resonances","publication_year":2026,"publication_date":"2026-10-06","ids":{"openalex":"https://openalex.org/W7220992256","doi":"https://doi.org/10.48550/arxiv.2610.07581"},"language":"en","primary_location":{"id":"pmh:oai:arXiv.org:2610.07581","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2610.07581","pdf_url":"https://arxiv.org/pdf/2610.07581","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},"volume":null,"type":"preprint","is_traditional":true,"indexed_in":["arxiv","datacite"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://arxiv.org/pdf/2610.07581","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5157896051","display_name":"Axel Mannu","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I204730241","display_name":"Universit\u00e9 Paris Cit\u00e9","ror":"https://ror.org/05f82e368","country_code":"FR","type":"education","lineage":["https://openalex.org/I204730241"]},{"id":"https://openalex.org/I2746051580","display_name":"Universit\u00e9 Paris Sciences et Lettres","ror":"https://ror.org/013cjyk83","country_code":"FR","type":"education","lineage":["https://openalex.org/I2746051580"]},{"id":"https://openalex.org/I2800004676","display_name":"Observatoire de Paris","ror":"https://ror.org/029nkcm90","country_code":"FR","type":"facility","lineage":["https://openalex.org/I1294671590","https://openalex.org/I2746051580","https://openalex.org/I2800004676"]},{"id":"https://openalex.org/I39804081","display_name":"Sorbonne Universit\u00e9","ror":"https://ror.org/02en5vm52","country_code":"FR","type":"education","lineage":["https://openalex.org/I39804081"]}],"countries":["FR"],"is_corresponding":false,"raw_author_name":"Mannu, Axel","raw_affiliation_strings":["LIRA , Observatoire de Paris , Universit\u00e9 PSL , Sorbonne Universit\u00e9 , Universit\u00e9 Paris Cit\u00e9 , CY Cergy"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"LIRA , Observatoire de Paris , Universit\u00e9 PSL , Sorbonne Universit\u00e9 , Universit\u00e9 Paris Cit\u00e9 , CY Cergy","institution_ids":["https://openalex.org/I204730241","https://openalex.org/I2746051580","https://openalex.org/I2800004676","https://openalex.org/I39804081"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5023844665","display_name":"Chervin F. P. Laporte","orcid":"https://orcid.org/0000-0003-3922-7336","observed_orcids":["https://orcid.org/0000-0003-3922-7336"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Laporte, Chervin F. P.","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5011198117","display_name":"Matthew D A Orkney","orcid":"https://orcid.org/0000-0002-8151-8498","observed_orcids":["https://orcid.org/0000-0002-8151-8498"]},"institutions":[{"id":"https://openalex.org/I4210092024","display_name":"Institut d'Estudis Espacials de Catalunya","ror":"https://ror.org/00k6njn28","country_code":"ES","type":"facility","lineage":["https://openalex.org/I4210092024","https://openalex.org/I4387153040"]},{"id":"https://openalex.org/I4392021189","display_name":"Institut de Ci\u00e8ncies del Cosmos","ror":"https://ror.org/044fgj614","country_code":"ES","type":"education","lineage":["https://openalex.org/I4392021189","https://openalex.org/I71999127"]},{"id":"https://openalex.org/I71999127","display_name":"Universitat de Barcelona","ror":"https://ror.org/021018s57","country_code":"ES","type":"education","lineage":["https://openalex.org/I71999127"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"Orkney, Matthew D. A.","raw_affiliation_strings":["Institut d'Estudis Espacials de Catalunya (IEEC) , E-08034 Barcelona , Spain","Institut de Ci\u00e8ncies del Cosmos (ICCUB) , Universitat de Barcelona , Mart\u00ed i Franqu\u00e8s 1 , E-08028 Barcelona , Spain"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institut d'Estudis Espacials de Catalunya (IEEC) , E-08034 Barcelona , Spain","institution_ids":["https://openalex.org/I4210092024"]},{"raw_affiliation_string":"Institut de Ci\u00e8ncies del Cosmos (ICCUB) , Universitat de Barcelona , Mart\u00ed i Franqu\u00e8s 1 , E-08028 Barcelona , Spain","institution_ids":["https://openalex.org/I4392021189","https://openalex.org/I71999127"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5114761082","display_name":"Y. R. Khalil","orcid":"https://orcid.org/0009-0005-8759-9814","observed_orcids":["https://orcid.org/0009-0005-8759-9814"]},"institutions":[{"id":"https://openalex.org/I1294671590","display_name":"Centre National de la Recherche Scientifique","ror":"https://ror.org/02feahw73","country_code":"FR","type":"government","lineage":["https://openalex.org/I1294671590"]},{"id":"https://openalex.org/I45084792","display_name":"University of Florence","ror":"https://ror.org/04jr1s763","country_code":"IT","type":"education","lineage":["https://openalex.org/I45084792"]}],"countries":["FR","IT"],"is_corresponding":false,"raw_author_name":"Khalil, Yassin Rany","raw_affiliation_strings":["Dipartimento di Fisica e Astronomia , Universit\u00e0 degli Studi di Firenze , Via G. Sansone 1 , I-50019 Sesto Fiorentino , Italy","Paris Universit\u00e9 , CNRS , 92190 Meudon , France"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Dipartimento di Fisica e Astronomia , Universit\u00e0 degli Studi di Firenze , Via G. Sansone 1 , I-50019 Sesto Fiorentino , Italy","institution_ids":["https://openalex.org/I45084792"]},{"raw_affiliation_string":"Paris Universit\u00e9 , CNRS , 92190 Meudon , France","institution_ids":["https://openalex.org/I1294671590"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5073089211","display_name":"Beno\u00eet Famaey","orcid":"https://orcid.org/0000-0003-3180-9825","observed_orcids":["https://orcid.org/0000-0003-3180-9825"]},"institutions":[{"id":"https://openalex.org/I1294671590","display_name":"Centre National de la Recherche Scientifique","ror":"https://ror.org/02feahw73","country_code":"FR","type":"government","lineage":["https://openalex.org/I1294671590"]},{"id":"https://openalex.org/I2802106081","display_name":"Observatoire astronomique de Strasbourg","ror":"https://ror.org/04xsj2p07","country_code":"FR","type":"facility","lineage":["https://openalex.org/I1294671590","https://openalex.org/I2802106081","https://openalex.org/I4210148025","https://openalex.org/I68947357"]},{"id":"https://openalex.org/I68947357","display_name":"Universit\u00e9 de Strasbourg","ror":"https://ror.org/00pg6eq24","country_code":"FR","type":"education","lineage":["https://openalex.org/I68947357"]}],"countries":["FR"],"is_corresponding":false,"raw_author_name":"Famaey, Benoit","raw_affiliation_strings":["Universit\u00e9 de Strasbourg , CNRS , Observatoire astronomique de Strasbourg , UMR 7550 , F-67000 Strasbourg , France"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Universit\u00e9 de Strasbourg , CNRS , Observatoire astronomique de Strasbourg , UMR 7550 , F-67000 Strasbourg , France","institution_ids":["https://openalex.org/I1294671590","https://openalex.org/I2802106081","https://openalex.org/I68947357"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":11,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":true,"cited_by_count":1,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10039","display_name":"Stellar, planetary, and galactic studies","score":0.7720000147819519,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10039","display_name":"Stellar, planetary, and galactic studies","score":0.7720000147819519,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10026","display_name":"Galaxies: Formation, Evolution, Phenomena","score":0.21400000154972076,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10744","display_name":"Astrophysical Phenomena and Observations","score":0.002199999988079071,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/omega-centauri","display_name":"Omega Centauri","score":0.9359999895095825},{"id":"https://openalex.org/keywords/gaia-sausage-enceladus","display_name":"Gaia-Sausage-Enceladus","score":0.972000002861023},{"id":"https://openalex.org/keywords/bar-resonances","display_name":"bar resonances","score":0.6759999990463257},{"id":"https://openalex.org/keywords/nuclear-star-clusters","display_name":"nuclear star clusters","score":0.6129999756813049},{"id":"https://openalex.org/keywords/galaxy-mergers","display_name":"galaxy mergers","score":0.5659999847412109},{"id":"https://openalex.org/keywords/bar-pattern-speed","display_name":"bar pattern speed","score":0.47600001096725464},{"id":"https://openalex.org/keywords/angular-momentum","display_name":"angular momentum","score":0.47999998927116394},{"id":"https://openalex.org/keywords/energy-distribution","display_name":"energy distribution","score":0.4090000092983246},{"id":"https://openalex.org/keywords/m54","display_name":"M54","score":0.6710000038146973}],"concepts":[{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.7342000007629395},{"id":"https://openalex.org/C98444146","wikidata":"https://www.wikidata.org/wiki/Q318","display_name":"Galaxy","level":2,"score":0.7275000214576721},{"id":"https://openalex.org/C150846664","wikidata":"https://www.wikidata.org/wiki/Q7602306","display_name":"Stars","level":2,"score":0.7152000069618225},{"id":"https://openalex.org/C44870925","wikidata":"https://www.wikidata.org/wiki/Q37547","display_name":"Astrophysics","level":1,"score":0.6818000078201294},{"id":"https://openalex.org/C188721877","wikidata":"https://www.wikidata.org/wiki/Q103510","display_name":"Bar (unit)","level":2,"score":0.5892999768257141},{"id":"https://openalex.org/C164866538","wikidata":"https://www.wikidata.org/wiki/Q367351","display_name":"Cluster (spacecraft)","level":2,"score":0.5817000269889832},{"id":"https://openalex.org/C48393594","wikidata":"https://www.wikidata.org/wiki/Q168845","display_name":"Star cluster","level":3,"score":0.4480000138282776},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.42289999127388},{"id":"https://openalex.org/C2780897414","wikidata":"https://www.wikidata.org/wiki/Q7600592","display_name":"Star (game theory)","level":2,"score":0.3978999853134155},{"id":"https://openalex.org/C139210041","wikidata":"https://www.wikidata.org/wiki/Q2145840","display_name":"Resonance (particle physics)","level":2,"score":0.3862000107765198},{"id":"https://openalex.org/C143724316","wikidata":"https://www.wikidata.org/wiki/Q312468","display_name":"Series (stratigraphy)","level":2,"score":0.37700000405311584},{"id":"https://openalex.org/C155675718","wikidata":"https://www.wikidata.org/wiki/Q161254","display_name":"Angular momentum","level":2,"score":0.35519999265670776},{"id":"https://openalex.org/C125857072","wikidata":"https://www.wikidata.org/wiki/Q16744","display_name":"Star formation","level":3,"score":0.33079999685287476},{"id":"https://openalex.org/C83160514","wikidata":"https://www.wikidata.org/wiki/Q17512228","display_name":"Galaxy groups and clusters","level":4,"score":0.3246000111103058},{"id":"https://openalex.org/C2780861071","wikidata":"https://www.wikidata.org/wiki/Q1062934","display_name":"Character (mathematics)","level":2,"score":0.319599986076355},{"id":"https://openalex.org/C110363677","wikidata":"https://www.wikidata.org/wiki/Q4360","display_name":"Pulsar","level":2,"score":0.3181000053882599},{"id":"https://openalex.org/C174802034","wikidata":"https://www.wikidata.org/wiki/Q1995140","display_name":"Galaxy formation and evolution","level":3,"score":0.2888999879360199},{"id":"https://openalex.org/C4839761","wikidata":"https://www.wikidata.org/wiki/Q212111","display_name":"Spectral line","level":2,"score":0.28279998898506165},{"id":"https://openalex.org/C113461152","wikidata":"https://www.wikidata.org/wiki/Q11276","display_name":"Globular cluster","level":3,"score":0.2702000141143799},{"id":"https://openalex.org/C156055797","wikidata":"https://www.wikidata.org/wiki/Q204107","display_name":"Galaxy cluster","level":3,"score":0.2596000134944916},{"id":"https://openalex.org/C206191943","wikidata":"https://www.wikidata.org/wiki/Q238323","display_name":"Nuclear reaction","level":2,"score":0.251800000667572}],"mesh":[],"locations_count":2,"locations":[{"id":"pmh:oai:arXiv.org:2610.07581","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2610.07581","pdf_url":"https://arxiv.org/pdf/2610.07581","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},{"id":"doi:10.48550/arxiv.2610.07581","doi":"https://doi.org/10.48550/arxiv.2610.07581","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2610.07581","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Preprint"}],"best_oa_location":{"id":"pmh:oai:arXiv.org:2610.07581","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2610.07581","pdf_url":"https://arxiv.org/pdf/2610.07581","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},"sustainable_development_goals":[],"study_designs":[],"awards":[{"id":"https://openalex.org/G3382554323","display_name":null,"funder_award_id":"852839","funder_id":"https://openalex.org/F4320320300","funder_display_name":"European Commission"},{"id":"https://openalex.org/G4339050372","display_name":null,"funder_award_id":"ANR-24-CPJ1-0160-01","funder_id":"https://openalex.org/F4320320883","funder_display_name":"Agence Nationale de la Recherche"},{"id":"https://openalex.org/G7161253465","display_name":"The formation of galactic bars","funder_award_id":"ANR-25-CE31-4684","funder_id":"https://openalex.org/F4320320883","funder_display_name":"Agence Nationale de la Recherche"},{"id":"https://openalex.org/G7606611989","display_name":null,"funder_award_id":"101117455","funder_id":"https://openalex.org/F4320320300","funder_display_name":"European Commission"}],"funders":[{"id":"https://openalex.org/F1100377486","display_name":"European High Performance Computing Joint Undertaking","ror":"https://ror.org/04dvh0v63"},{"id":"https://openalex.org/F4320320300","display_name":"European Commission","ror":"https://ror.org/00k4n6c32"},{"id":"https://openalex.org/F4320320883","display_name":"Agence Nationale de la Recherche","ror":"https://ror.org/00rbzpz17"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W7220992256.pdf","grobid_xml":"https://content.openalex.org/works/W7220992256.grobid-xml"},"referenced_works_count":8,"referenced_works":["https://openalex.org/W1568380825","https://openalex.org/W2989580514","https://openalex.org/W7140714625","https://openalex.org/W7154725765","https://openalex.org/W7160273695","https://openalex.org/W7160529478","https://openalex.org/W7162537735","https://openalex.org/W7171849360"],"related_works":["https://openalex.org/W7164700959","https://openalex.org/W4401167930","https://openalex.org/W4292602351","https://openalex.org/W4200294548","https://openalex.org/W4239730356","https://openalex.org/W6930238587","https://openalex.org/W7169880364","https://openalex.org/W7223266175","https://openalex.org/W2990211974","https://openalex.org/W6979304834"],"abstract_inverted_index":{"We":[0,30,81,123],"test":[1],"the":[2,14,20,28,67,84,108,117,142,153,158,169,176,181],"idea":[3],"proposed":[4],"by":[5,27],"Laporte":[6],"\\&":[7],"Orkney":[8],"that":[9,83,173,190,207],"$\u03c9$":[10],"Centauri":[11],"($\u03c9$Cen)":[12],"is":[13,88,175,204],"central":[15],"nuclear":[16,177],"star":[17,178],"cluster":[18,179],"of":[19,34,51,72,90,93,103,116,119,127,147,180],"Gaia-Sausage-Enceladus":[21],"galaxy":[22],"(GSE)":[23],"which":[24],"got":[25],"dislodged":[26],"bar.":[29],"run":[31],"a":[32,125,145,212,217],"series":[33],"simulations":[35],"in":[36,78],"time-evolving":[37],"bar":[38,64],"potentials":[39],"with":[40,130,137],"present-day":[41],"pattern":[42],"speeds":[43],"within":[44,101,107],"Portail":[45],"et":[46],"al's":[47],"$\u03a9_{b}=39\\pm3.5\\,\\rm{km\\,s^{-1}\\,kpc^{-1}}$":[48],"and":[49,70,75,133,185],"rate":[50],"slow-down":[52],"$\\dot\u03a9_{\\rm":[53],"b}=":[54],"4.5":[55],"\\pm":[56],"1.4":[57],"\\,\\rm{km":[58],"\\,s^{-1}\\,kpc^{-1}\\,":[59],"Gyr^{-1}}$":[60],"to":[61,157],"study":[62],"how":[63],"resonances":[65],"modulate":[66],"angular":[68],"momentum":[69],"energies":[71],"both":[73],"GSE-debris":[74],"$\u03c9$Cen's":[76,163,186],"location":[77],"$(E,L_{z})$":[79],"space.":[80],"find":[82],"retrograde":[85],"$3:2$":[86],"resonance":[87],"capable":[89],"inflicting":[91],"changes":[92],"$\u0394E\\approx0.4\\times10^{5}\\,\\rm{km^{2}\\,":[94],"s^{-2}}$,":[95],"$\u0394L_{z}\\approx0.3-0.5\\times10^{3}\\,":[96],"\\rm{km":[97],"\\,":[98],"s^{-1}\\,":[99],"kpc^{-1}}$":[100],"timescales":[102],"$\u0394t\\approx":[104],"0.5-1\\,\\rm{Gyr}$,":[105],"well":[106],"bar's":[109],"lifespan":[110],"$t_{\\rm{bar}}\\approx10-8\\,\\rm{Gyr}$.":[111],"These":[112],"results":[113],"are":[114,211],"independent":[115],"choice":[118],"potential":[120],"or":[121],"modelling.":[122],"uncover":[124],"sample":[126],"N-rich":[128,149],"stars":[129,150],"metallicities":[131],"$-2.0<[\\rm{Fe/H}]<-1.0$":[132],"aluminium":[134],"enrichments":[135],"consistent":[136],"$\u03c9$Cen.":[138],"In":[139],"($E,L_{z}$)":[140],"space,":[141],"map":[143],"reveals":[144],"corridor":[146],"trailing":[148],"clustered":[151],"about":[152],"region":[154],"connecting":[155],"$\u03c9$Cen":[156,174],"GSE's":[159],"debris":[160],"centroid,":[161],"matching":[162],"past":[164],"predicted":[165],"track.":[166],"This":[167,203],"provides":[168],"best":[170],"evidence":[171,206],"yet":[172],"GSE.":[182],"Using":[183],"M54":[184],"chemistry":[187],"we":[188],"show":[189],"neither":[191],"first":[192],"nor":[193],"second":[194],"generations":[195],"follow":[196],"general":[197],"galaxy-wide":[198,218],"scale":[199],"chemical":[200,209],"enrichment":[201],"trends.":[202],"empirical":[205],"GC":[208],"trends":[210],"cluster-scale":[213],"physics":[214],"problem,":[215],"not":[216],"one.":[219]},"counts_by_year":[{"year":2026,"cited_by_count":1}],"updated_date":"2026-11-07T11:25:07.637180","created_date":"2026-10-09T00:00:00"}