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http://hdl.handle.net/10261/347862
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Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Campo DC | Valor | Lengua/Idioma |
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dc.contributor.author | Ardèvol, J. | es_ES |
dc.contributor.author | Monguió-Tortajada, Marta | es_ES |
dc.contributor.author | Figueras, Francesca | es_ES |
dc.contributor.author | Romero-Gómez, Mercè | es_ES |
dc.contributor.author | Carrasco, J. M. | es_ES |
dc.date.accessioned | 2024-02-21T12:16:47Z | - |
dc.date.available | 2024-02-21T12:16:47Z | - |
dc.date.issued | 2023 | - |
dc.identifier.citation | Astronomy and Astrophysics 678: A111 (2023) | es_ES |
dc.identifier.other | CEX2019-000918-M | - |
dc.identifier.uri | http://hdl.handle.net/10261/347862 | - |
dc.description.abstract | [Context] Despite their relatively high intrinsic brightness and the fact that they are more numerous than younger OB stars and kinematically colder than older red giants, A-type stars have rarely been used as Galactic tracers. They may, in fact, be used to fill the age gap between these two tracers, thereby allowing us to evaluate the evolutionary and dynamic processes underlying the transition between them. | es_ES |
dc.description.abstract | [Aims] We analyse Galactic disc structure and kinematic perturbations up to 6 kpc from the Sun based on observations of A-type stars. | es_ES |
dc.description.abstract | [Methods] This work presents a catalogue of A-type stars selected using the IGAPS photometric survey. It covers the Galactic disc within 30° ≤l ≤ 215° and |b|≤5° up to a magnitude of r ≤ 19 mag with about 3.5 million sources. We used Gaia Data Release 3 parallaxes and proper motions, as well as the line-of-sight velocities, to analyse the large-scale features of the Galactic disc. We carried out a study of the completeness of the detected density distributions, along with a comparison between the b < 0° and b > 0° regions. Possible biases caused by interstellar extinction or by the usage of some kinematic approximations were examined as well. | es_ES |
dc.description.abstract | [Results] We find stellar overdensities associated with the Local and the Perseus spiral arms, as well as with the Cygnus region. We find that A-type stars also provide kinematic indications of the Galactic warp towards the anticentre, which displays a median vertical motion of ∼6 − 7 km s−1 at a Galactocentric radius of R = 14 kpc. It starts at R ≈ 12 kpc, which supports the scenario where the warp begins at larger radii for younger tracers when compared with other samples in the literature. We also detect a region with downward mean motion extending beyond 2 kpc from the Sun towards 60° ≲l ≲ 75° that may be associated with a compression breathing mode. Furthermore, A-type stars reveal very clumpy inhomogeneities and asymmetries in the VZ − Vϕ velocity space plane. | es_ES |
dc.description.sponsorship | This work made use of TOPCAT (http://www.star.bris.ac.uk/~mbt/topcat/) and STILTS (http://www.star.bris.ac.uk/~mbt/stilts/) Visual Observatory tools. This research made use of Astropy (http://www.astropy.org), a community-developed core Python package for Astronomy (Astropy Collaboration 2013, 2018). This work has made use of data from the European Space Agency (ESA) mission Gaia (https://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, https://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. This work was part of the PRE2021-100596 grant funded by Spanish MCIN/AEI/10.13039/501100011033 and by ESF+. It was also (partially) funded by “ERDF A way of making Europe” by the “European Union” through grants RTI2018-095076-B-C21 and PID2021-122842OB-C21, and the Institute of Cosmos Sciences University of Barcelona (ICCUB, Unidad de Excelencia ‘María de Maeztu’) through grant CEX2019-000918-M. | es_ES |
dc.description.sponsorship | With funding from the Spanish government through the "Severo Ochoa Centre of Excellence" accreditation (CEX2019-000918-M). | es_ES |
dc.format | application/pdf | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | EDP Sciences | es_ES |
dc.relation | info:eu-repo/grantAgreement/AEI//PRE2021-100596 | es_ES |
dc.relation | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-095076-B-C21/ES/LOS DATOS DE GAIA PARA LAS PROXIMAS DECADAS II/ | es_ES |
dc.relation | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-122842OB-C21/ES/DE LOS PIXELES AL CATALOGO DE LA MISION NOMINAL DE GAIA/ | es_ES |
dc.relation | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/CEX2019-000918-M | es_ES |
dc.relation.isversionof | Publisher's version | es_ES |
dc.rights | openAccess | es_ES |
dc.subject | Galaxy: disk | es_ES |
dc.subject | Galaxy: structure | es_ES |
dc.subject | Galaxy: kinematics and dynamics | es_ES |
dc.subject | Catalogs | es_ES |
dc.title | Exploring the structure and kinematics of the Milky Way through A stars | es_ES |
dc.type | artículo | es_ES |
dc.identifier.doi | 10.1051/0004-6361/202346925 | - |
dc.description.peerreviewed | Peer reviewed | es_ES |
dc.relation.publisherversion | https://doi.org/10.1051/0004-6361/202346925 | es_ES |
dc.identifier.e-issn | 1432-0746 | - |
dc.rights.license | https://creativecommons.org/licenses/by/4.0 | es_ES |
dc.contributor.funder | Ministerio de Ciencia, Innovación y Universidades (España) | es_ES |
dc.contributor.funder | European Space Agency | es_ES |
dc.contributor.funder | European Commission | es_ES |
dc.contributor.funder | Agencia Estatal de Investigación (España) | es_ES |
dc.contributor.funder | Ministerio de Ciencia e Innovación (España) | es_ES |
dc.relation.csic | No | es_ES |
oprm.item.hasRevision | no ko 0 false | * |
dc.identifier.funder | http://dx.doi.org/10.13039/501100004837 | es_ES |
dc.identifier.funder | http://dx.doi.org/10.13039/501100000780 | es_ES |
dc.identifier.funder | http://dx.doi.org/10.13039/501100011033 | es_ES |
dc.identifier.funder | http://dx.doi.org/10.13039/501100000844 | es_ES |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | es_ES |
item.openairetype | artículo | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.languageiso639-1 | en | - |
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explorstars.pdf | 2,31 MB | Adobe PDF | Visualizar/Abrir |
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