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A search for Galactic post-asymptotic giant branch stars in Gaia DR3
dc.contributor.author | Manteiga, Minia | |
dc.contributor.author | González Santamaría, I. | |
dc.contributor.author | Dafonte, Carlos | |
dc.contributor.author | Villaver, Eva | |
dc.contributor.author | Ulla, Ana | |
dc.contributor.author | Machado, A. | |
dc.date.accessioned | 2024-09-09T17:28:46Z | |
dc.date.available | 2024-09-09T17:28:46Z | |
dc.date.issued | 2024 | |
dc.identifier.uri | http://hdl.handle.net/2183/38933 | |
dc.description.abstract | [Abstract] Context. When low- and intermediate-mass stars leave the asymptotic giant branch (AGB) phase, and before they reach the planetary nebula stage, they enter a very brief and rather puzzling stellar evolutionary stage called post-AGB stage. The post-AGB phase lasts very briefly, about a few thousand years at most. The number of objects that are confirmed in this phase therefore is really small, and our understanding of this elusive stellar evolutionary stage is accordingly very limited. Aims. We provide a reliable catalogue of Galactic post-AGB stars together with their physical and evolutionary properties obtained through Gaia DR3 astrometry and photometry. As an added product, we provide information for a sample of other types of stellar objects, whose observational properties mimic those of post-AGB stars. Methods. Post-AGB stars are characterised by their infrared excesses and high luminosities. The publication of precise parallaxes in Gaia DR3 made it possible to calculate accurate distances and to revise the derivation of luminosities for post-AGB candidates, so that objects outside the expected luminosity range can be discarded. We started by identifying post-AGB stars or possible candidates from the bibliography, and we then searched for their Gaia DR3 counterpart sources. Using the available photometry, interstellar extinction, spectroscopically derived temperatures or spectral types and parallax-derived distances from the literature, we fitted their spectral energy distributions and estimated their luminosities and circumstellar extinctions. By a comparison to models, the luminosity values allowed us to determine which objects are likely post-AGB stars from other target types. Their position in the Hertzsprung-Russell diagram allows a direct comparison with updated post-AGB evolutionary tracks and an estimation of their masses and evolutionary ages. Results. We obtained a sample of 69 reliable post-AGB candidates that meet our classification criteria, which provide their coordinates, distances, effective temperature, interstellar and circumstellar extinction, luminosity, mass, and evolutionary age. In addition, we provide similar data for other stellar objects in our initial compilation, such as supergiant stars and young stellar objects. Our identifications and parameters are compared with others found in the recent literature for the subject. Conclusions. We selected the data with the best precision in parallax and distance to obtain more accurate luminosities, which allowed us to confidently classify the objects of the sample in different stellar phases. In turn, this allowed us to provide a small but reliable sample of post-AGB objects. The derived mean evolutionary time and average mass values agree with theoretical expectations and with the mean mass value obtained in a previous work for the subsequent evolutionary stage, the planetary nebula stage. | es_ES |
dc.description.sponsorship | This work has made use of data from the European Space Agency (ESA) Gaia mission, processed by the Gaia Data Processing and Analysis Consortium (DPAC). Funding for the DPAC has been provided by national institutions, in particular, the institutions participating in the Gaia Multilateral Agreement. This research has made use of the Simbad database and the Aladin sky atlas, operated at CDS, Strasbourg, France. The authors have also made use of the VOSA software, developed under the Spanish Virtual Observatory project supported by the Spanish MINECO through grant PID2020-112949GB-I00, and partially funded by the European Union’s Seventh Framework Programme (FP7-SPACE-2013-1) for research, technological development and demonstration under grant agreement no. 60674. This research was funded by the Spanish Ministry of Science MCIN / AEI /10.13039 / 501100011033 and the European Union Next Generation programme EU/PRTR through the coordinated grant PID2021-122842OB-C22 and the Horizon Europe [HORIZON-CL4-2023-SPACE-01-71] SPACIOUS project, Grant Agreement no. 101135205. Additionally, it is co-financed by the EU through the FEDER Galicia 2021-27 operational programme, Ref. ED431G 2023/01. E.V. acknowledges support from the ‘DISCOBOLO’ funded by the Spanish Ministerio de Ciencia, Innovación y Universidades under grant PID2021-127289NB-I00. M.M. and E.V. acknowledge support from the cooperation agreement between the IAC and the Fundación Jesús Serra for visiting grants. AM acknowledges support from the ACIISI, Gobierno de Canarias and the European Regional Development Fund (ERDF) under grant with reference PROID2020010051 as well as from the State Research Agency (AEI) of the Spanish Ministry of Science and Innovation (MICINN) under grant PID2020-115758GB-I00. | es_ES |
dc.description.sponsorship | Xunta de Galicia; ED431G 2023/01 | es_ES |
dc.description.sponsorship | Gobierno de Canarias; PROID2020010051 | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | EDP Sciences | es_ES |
dc.relation | info:eu-repo/grantAgreement/EC/FP7/606740 | es_ES |
dc.relation | info:eu-repo/grantAgreement/EC/HE/101135205 | es_ES |
dc.relation | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-112949GB-I00/ES/EL OBSERVATORIO VIRTUAL ESPAÑOL. EXPLOTACION CIENTIFICO-TECNICA DE ARCHIVOS ASTRONOMICOS | es_ES |
dc.relation | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-122842OB-C22/ES/SMART DATA PARA UN ANALISIS MULTICOLOR DE LA VIA LACTEA EN GAIA | es_ES |
dc.relation | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-127289NB-I00/ES/GRANDES PROBLEMAS PARA CUERPOS PEQUEÑOS: SACUDIENDO CUERPOS COMETARIOS Y ASTEROIDES USANDO GRANDES OBJETOS | es_ES |
dc.relation | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-115758GB-I00/ES/ESPECIES ORGANICAS COMPLEJAS EN LA ERA JWST | es_ES |
dc.relation.uri | https://doi.org/10.1051/0004-6361/202346330 | es_ES |
dc.rights | Creative Commons Attribution License CC BY | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | * |
dc.subject | Virtual observatory tools | es_ES |
dc.subject | Stars, AGB and post-AGB | es_ES |
dc.subject | Stars, distances | es_ES |
dc.subject | Stars, fundamental parameters | es_ES |
dc.subject | Hertzsprung-Russell and C-M diagram | es_ES |
dc.title | A search for Galactic post-asymptotic giant branch stars in Gaia DR3 | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.access | info:eu-repo/semantics/openAccess | es_ES |
UDC.journalTitle | Astronomy & Astrophysics | es_ES |
UDC.volume | 688 | es_ES |
UDC.startPage | Article A209 | es_ES |
dc.identifier.doi | 10.1051/0004-6361/202346330 |
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