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Campo DC | Valor | Idioma |
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dc.rights.license | Published 2020 January 17 • © 2020. The American Astronomical Society. All rights reserved. | - |
dc.contributor.author | Costantin, L. | - |
dc.contributor.author | Méndez Abreu, J. | - |
dc.contributor.author | Corsini, E. M. | - |
dc.contributor.author | Morelli, L. | - |
dc.contributor.author | De Lorenzo Cáceres, A. | - |
dc.contributor.author | Pagotto, I. | - |
dc.contributor.author | Cuomo, V. | - |
dc.contributor.author | Aguerri, J. A. L. | - |
dc.contributor.author | Rubino, M. | - |
dc.contributor.other | Unidad de Excelencia Científica María de Maeztu Centro de Astrobiología del Instituto Nacional de Técnica Aeroespacial y CSIC, MDM-2017-0737 | - |
dc.date.accessioned | 2021-04-08T08:01:22Z | - |
dc.date.available | 2021-04-08T08:01:22Z | - |
dc.date.issued | 2020-01-17 | - |
dc.identifier.citation | The Astrophysical Journal Letters 889(1): L3(2020) | es |
dc.identifier.issn | 0004-637X | - |
dc.identifier.other | https://iopscience.iop.org/article/10.3847/2041-8213/ab6459 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.12666/165 | - |
dc.description.abstract | The Λ cold dark matter (ΛCDM) paradigm of galaxy formation predicts that dense spheroidal stellar structures invariably grow at early cosmic time. These primordial spheroids evolve toward a virialized dynamical status as they finally become today's elliptical galaxies and large bulges at the center of disk galaxies. However, observations reveal that small bulges in spiral galaxies are common in the nearby universe. The prevailing belief that all small bulges form at later times from internal processes occurring in the disk represents a challenge for the ΛCDM scenario. Notably, the coevolution of bulges and central supermassive black holes (SMBHs) at early phases of galaxy evolution is also at stake. However, observations have so far not provided conclusive evidence against their possible early origin. Here, we report new observations of small bulges showing that they follow the mass–velocity dispersion relation expected for virialized systems. Contrary to previous claims, small bulges bridge the gap between massive ellipticals and globular clusters. This dynamical picture supports a scenario where systems over seven orders of magnitude in stellar mass form at early cosmic time. These results alleviate the tension between ΛCDM simulations and observations at galactic scales. We hypothesize that these small bulges are actually the low-mass descendants of compact objects observed at high redshift, also known as red nuggets, which are consistently produced in cosmological ΛCDM simulations. Therefore, this also suggests that the established coevolution of SMBHs and large bulges naturally extends to spheroids in the low-mass regime. | es |
dc.description.sponsorship | We would like to thank the anonymous referee for improving the content of the manuscript.L.C. wishes to thank C.C.G. for inspiration and A.C. for the useful discussion while this manuscript was written.L.C. acknowledges financial support from Comunidad de Madrid under Atraccio ' nde Talento grant 2018-T2/TIC-11612 and the Spanish Ministerio de Ciencia, Innovacion y Universidades through grant PGC2018-093499-B-I00.J.M.A. and A.d.L.-C. acknowledge support from the Spanish Ministerio de Economia y Competitividad (MINECO) grants AYA2017-83204-P and AYA2016-77237C3-1-P, respectively.E.M.C. is supported by MIUR grant PRIN 2017 20173ML3WW\_001. I.P. is supported by Leibniz-Institut fur Astrophysik Potsdam.V.C. and I.P. acknowledge support from the Fondazione Ing. Aldo Gini. E.M.C., V.C., and M.R. are funded by Padua University grants DOR1715817/17, DOR1885254/18, and DOR1935272/19 ; With funding from the Spanish government through the "María de Maeztu Unit of Excellence" accreditation (MDM-2017-0737). | es |
dc.language.iso | eng | es |
dc.publisher | The Institute of Physics (IOP) | es |
dc.relation | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PGC2018-093499-B-I00/ES/ESTUDIO DEL ENSAMBLAJE DE LAS GALAXIAS MASIVAS EN LOS ULTIMOS 13000 MILLONES DE AÑOS CON LAS EXPLORACIONES COSMOLOGICAS MAS PROFUNDAS DE GTC Y JWST (SHARDS^JWST)/ | - |
dc.relation | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AYA2017-83204-P/ES/WEAVE: EXPLORANDO NUEVOS HORIZONTES CIENTIFICOS CON CARTOGRAFIADOS ESPECTROSCOPICOS/ | - |
dc.relation | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AYA2016-77237-C3-1-P/ES/GALAXIAS REALES Y VIRTUALES: LA FORMACION DE LAS GALAXIAS A LO LARGO DE LA HISTORIA COSMICA / | - |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 International | * |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | Low surface brightness galaxies | es |
dc.subject | Late type galaxies | es |
dc.subject | Galaxy physics | es |
dc.subject | Compact galaxies | es |
dc.subject | Galaxies | es |
dc.subject | DIsk galaxies | es |
dc.subject | Early type galaxies | es |
dc.subject | Elliptical galaxies | es |
dc.subject | Galaxy formation | es |
dc.subject | Galaxy dynamics | es |
dc.subject | Galaxy properties | es |
dc.subject | Galaxy structure | es |
dc.title | Dynamical Structure of Small Bulges Reveals Their Early Formation in ΛCDM Paradigm | es |
dc.type | info:eu-repo/semantics/article | es |
dc.contributor.orcid | 0000-0001-6820-0015 | - |
dc.identifier.doi | 10.3847/2041-8213/ab6459 | - |
dc.identifier.e-issn | 1538-4357 | - |
dc.contributor.funder | Comunidad de Madrid | - |
dc.contributor.funder | Agencia Estatal de Investigación (AEI) | - |
dc.contributor.funder | Ministerio de Economía y Competitividad (MINECO) | - |
dc.contributor.funder | Ministero dell'Istruzione, dell'Università e della Ricerca (MIUR) | - |
dc.description.peerreviewed | Peer review | es |
dc.type.hasVersion | info:eu-repo/semantics/publishedVersion | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | - |
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