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Campo DC | Valor | Idioma |
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dc.rights.license | © ESO 2021 | - |
dc.contributor.author | Crespo Gómez, A. | - |
dc.contributor.author | Piqueras López, J. | - |
dc.contributor.author | Arribas, S. | - |
dc.contributor.author | Pereira Santaella, M. | - |
dc.contributor.author | Colina, L. | - |
dc.contributor.author | Rodríguez del Pino, B. | - |
dc.date.accessioned | 2022-02-11T11:16:12Z | - |
dc.date.available | 2022-02-11T11:16:12Z | - |
dc.date.issued | 2021-06-22 | - |
dc.identifier.citation | Extragalactic Astronomy 36: A149(2021) | es |
dc.identifier.issn | 0004-6361 | - |
dc.identifier.other | https://www.aanda.org/articles/aa/abs/2021/06/aa39472-20/aa39472-20.html | - |
dc.identifier.uri | http://hdl.handle.net/20.500.12666/522 | - |
dc.description.abstract | Context. Nearby luminous infrared galaxies (LIRGs) are often considered to be the local counterpart of the star forming galaxy (SFG) population at z > 1. Therefore, local LIRGs are ideal systems with which to perform spatially resolved studies on the physical processes that govern these objects and to validate assumptions made in high-z studies because of a lack of sensitivity and/or spatial resolution. Aims. In this work we analyse the spatially resolved kinematics of the stellar component in the inner r < 1–2 kpc of ten nearby (mean z = 0.014) LIRGs, establishing the dynamical state of the stars and estimating their dynamical masses (Mdyn). We compare the stellar kinematics with those for different gas phases, and analyse the relative effects of using different tracers when estimating dynamical masses. Methods. We use seeing-limited SINFONI H- and K-band spectroscopy in combination with ancillary infrared (IR) imaging from various instruments (NICMOS/F160W, NACO/Ks and IRAC/3.6 μm). The stellar kinematics are extracted in both near-IR bands by fitting the continuum emission using pPXF. The velocity maps are then modelled as rotating discs and used to extract the geometrical parameters (i.e. centre, PA, and inclination), which are compared with their photometric counterparts extracted from the near-IR images. We use the stellar and the previously extracted gas velocity and velocity dispersion maps to estimate the dynamical mass using the different tracers. Results. We find that the different gas phases have similar kinematics, whereas the stellar component is rotating with slightly lower velocities (i.e. V* ∼ 0.8Vg) but in significantly warmer orbits (i.e. σ* ∼ 2σg) than the gas phases, resulting in significantly lower V/σ for the stars (i.e. ∼1.5–2) than for the gas (i.e. ∼4–6). These ratios can be understood if the stars are rotating in thick discs while the gas phases are confined in dynamically cooler (i.e. thinner) rotating discs. However, these differences do not lead to significant discrepancies between the dynamical mass estimations based on the stellar and gas kinematics. This result suggests that the gas kinematics can be used to estimate Mdyn also in z ∼ 2 SFGs, a galaxy population that shares many structural and kinematic properties with local LIRGs. | es |
dc.description.sponsorship | We thank the anonymous referee for his/her useful suggestions and comments that helped to improve the final content of this work. A.C.G., S.A., L.C. and B.R.P. acknowledge support from the Spanish Ministerio de Economía y Competitividad through the grants BES-2016-078214, ESP2015-68964-P, ESP2017-83197 and PID2019-106280GB-I00. J.P.L. acknowledges support from the Spanish Ministerio de Economía y Competitividad through grant AYA2017-85170-R. M.P.S. acknowledges support from the Comunidad de Madrid through the Atracción de Talento Investigador Grant 2018-T1/TIC-11035 and PID2019-105423GA-I00 (MCIU/AEI/FEDER,UE). This work is based on observations collected at the European Organisation for Astronomical Research in the Southern Hemisphere, Chile, programmes 077.B-0151A, 078.B-0066A, 081.B-0042A and 103.B-0867A. This paper also makes use of the following ALMA data: ADS/JAO.ALMA#2013.1.00243.S, ADS/JAO.ALMA#2013.1.00271.S, ADS/JAO.ALMA#2017.1.00255.S. ALMA is a partnership of ESO (representing its member states), NSF (USA) and NINS (Japan), together with NRC (Canada) and NSC and ASIAA (Taiwan), in cooperation with the Republic of Chile. The Joint ALMA Observatory is operated by ESO, AUI/NRAO and NAOJ. This work made use of Astropy, a community-developed core Python package for Astronomy (Astropy Collaboration 2018). This research has made use of the NASA/IPAC Extragalactic Database (NED) which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. Some of the data presented in this paper were obtained from the Mikulski Archive for Space Telescopes (MAST). STScI is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555. | - |
dc.language.iso | eng | es |
dc.publisher | EDP Sciences | es |
dc.relation | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/BES-2016-078214 | - |
dc.relation | info:eu-repo/grantAgreement/MINECO//ESP2015-68964-P | - |
dc.relation | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ESP2017-83197-P | - |
dc.relation | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-106280GB-I00/ES/PARTICIPACION ESPAÑOLA EN EL TELESCOPIO JAMES WEBB: ACTIVIDADES PREVIAS AL LANZAMIENTO, CARACTERIZACION EN ORBITA,Y PREPARACION DE PROGRAMAS CIENTIFICOS DE TIEMPO GARANTIZADO/ | - |
dc.relation | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AYA2017-85170-R/ES/PARTICIPACION DEL CENTRO DE ASTROBIOLOGIA (CAB, CSIC/INTA) EN EL DESARROLLO DEL INSTRUMENTO HARMONI PARA EL EXTREMELY LARGE TELESCOPE (ELT): FASE DE DISEÑO FINAL (FDR)/ | - |
dc.relation | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-105423GA-I00 | - |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 International | es |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | - |
dc.subject | Galaxies: general | es |
dc.subject | Galaxies: evolution | es |
dc.subject | Galaxies: kinematics and dynamics | es |
dc.subject | Galaxies: ISM | es |
dc.subject | Infrared: general | es |
dc.title | Stellar kinematics in the nuclear regions of nearby LIRGs with VLT-SINFONI Comparison with gas phases and implications for dynamical mass estimations | es |
dc.type | info:eu-repo/semantics/article | es |
dc.contributor.orcid | 0000-0003-2119-277X | - |
dc.contributor.orcid | 0000-0003-1580-1188 | - |
dc.contributor.orcid | 0000-0001-7997-1640 | - |
dc.contributor.orcid | 0000-0002-9090-4227 | - |
dc.contributor.orcid | 0000-0001-5171-3930 | - |
dc.identifier.doi | 10.1051/0004-6361/202039472 | - |
dc.identifier.e-issn | 1432-0746 | - |
dc.contributor.funder | National Aeronautics and Space Administration (NASA) | - |
dc.contributor.funder | Agencia Estatal de Investigación (AEI) | - |
dc.contributor.funder | Ministerio de Economía y Competitividad (MINECO) | - |
dc.description.peerreviewed | Peerreview | 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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