An observational study of rotation and binarity of Galactic O-type runaway stars

The full Table A.1 is available at the CDS via https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/705/A215

Detalhes bibliográficos
Autores: Carretero-Castrillo, M., Ribó, Marc, Paredes, Josep M., Holgado, G., Martínez-Sebastián, C., Simón-Díaz, S.
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2026
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/424222
Acesso em linha:http://hdl.handle.net/10261/424222
http://arxiv.org/abs/2510.21577v1
Access Level:acceso abierto
Palavra-chave:Binaries: spectroscopic
Stars: early-type
Stars: kinematics and dynamics
Stars: rotation
Supernovae: general
X-rays: binaries
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dc.title.none.fl_str_mv An observational study of rotation and binarity of Galactic O-type runaway stars
title An observational study of rotation and binarity of Galactic O-type runaway stars
spellingShingle An observational study of rotation and binarity of Galactic O-type runaway stars
Carretero-Castrillo, M.
Binaries: spectroscopic
Stars: early-type
Stars: kinematics and dynamics
Stars: rotation
Supernovae: general
X-rays: binaries
title_short An observational study of rotation and binarity of Galactic O-type runaway stars
title_full An observational study of rotation and binarity of Galactic O-type runaway stars
title_fullStr An observational study of rotation and binarity of Galactic O-type runaway stars
title_full_unstemmed An observational study of rotation and binarity of Galactic O-type runaway stars
title_sort An observational study of rotation and binarity of Galactic O-type runaway stars
dc.creator.none.fl_str_mv Carretero-Castrillo, M.
Ribó, Marc
Paredes, Josep M.
Holgado, G.
Martínez-Sebastián, C.
Simón-Díaz, S.
author Carretero-Castrillo, M.
author_facet Carretero-Castrillo, M.
Ribó, Marc
Paredes, Josep M.
Holgado, G.
Martínez-Sebastián, C.
Simón-Díaz, S.
author_role author
author2 Ribó, Marc
Paredes, Josep M.
Holgado, G.
Martínez-Sebastián, C.
Simón-Díaz, S.
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (España)
Agencia Estatal de Investigación (España)
Ministerio de Ciencia, Innovación y Universidades (España)
Generalitat de Catalunya
Carretero-Castrillo, M. [0000-0002-1426-1311]
Ribó, Marc [0000-0002-9931-4557]
Paredes, Josep M. [0000-0002-1566-9044]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Binaries: spectroscopic
Stars: early-type
Stars: kinematics and dynamics
Stars: rotation
Supernovae: general
X-rays: binaries
topic Binaries: spectroscopic
Stars: early-type
Stars: kinematics and dynamics
Stars: rotation
Supernovae: general
X-rays: binaries
description The full Table A.1 is available at the CDS via https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/705/A215
publishDate 2026
dc.date.none.fl_str_mv 2026
2026
2026
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http://purl.org/coar/resource_type/c_6501
Publisher's version
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dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/424222
http://arxiv.org/abs/2510.21577v1
url http://hdl.handle.net/10261/424222
http://arxiv.org/abs/2510.21577v1
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Carretero-Castrillo, M.; Ribo, M.; Paredes, J. M.; Holgado, G.; Martinez-Sebastian, C.; Simon-Diaz, S.; 2026; Galactic O-type runaway stars; Centre de Donnees astronomique de Strasbourg (CDS); https://doi.org/10.26093/cds/vizier/bc-p1/lcbf
https://doi.org/10.1051/0004-6361/202556646
Sí
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dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
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spelling An observational study of rotation and binarity of Galactic O-type runaway starsCarretero-Castrillo, M.Ribó, MarcParedes, Josep M.Holgado, G.Martínez-Sebastián, C.Simón-Díaz, S.Binaries: spectroscopicStars: early-typeStars: kinematics and dynamicsStars: rotationSupernovae: generalX-rays: binariesThe full Table A.1 is available at the CDS via https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/705/A215[Context] Gaia Data Release 3 (DR3) has revealed new massive runaway stars and large spectroscopic surveys have now enable detailed characterization studies. However, the relative contributions of binary supernova (BSS) and dynamical ejection (DES) scenarios to explain their runaway origin remain poorly constrained, particularly in the Milky Way.[Aims] We aim to characterize the largest sample of Galactic O-type runaway stars ever investigated through their kinematics, rotation, and binarity with the ultimate objective of shedding light on their potential runaway origins.[Methods] We used the GOSC-Gaia DR3 catalog of normal and runaway stars, along with IACOB spectroscopic information to build a sample with 214 O-type stars with information on the projected rotational velocities (v sin i). We also built a subsample of 168 O-type stars with additional information about their likely single (LS) or single-lined (SB1) spectroscopic binary nature. We also considered an additional sample of 65 double-lined (SB2) spectroscopic binaries.[Results] We find that among our sample of Galactic O-type runaways, most (74%) have v sin i < 200 km s−1, whereas for normal stars this fraction is slightly higher (82%). There are no fast-moving (VPEC2D >85 km s−1) runaways that have been shown to be fast rotators (v sin i ≥ 200 km s−1), except for HD 124 979. Runaways exhibit lower SB1 fractions than normal stars, with no runaway SB1 fast-rotating systems; on average, runaways rotate faster than normal stars; and their runaway fraction is higher among fast rotators (44%) versus the slow rotators (34%). This is consistent with BSS dominance for fast rotators. We also found that SB2 systems hardly reach runaway velocities with a low runaway fraction (10%). Runaways with VPEC 2D>60 km s−1 are mostly single and interpreted as DES products, while runaways with VPEC2D>85 km s−1 are also interpreted as two-step products, with the binary V479 Sct/LS 5039 a likely example. Finally, we found that three of 12 runaway SB1 systems are high-mass X-ray binaries[Conclusions] Our observational study reveals that Galactic O-type runaways are dominated by slow rotators. The study points to a dominance of BSS among fast-rotating runaways and of DES and the two-step scenario among the high-velocity ones. The observed trends provide valuable constraints on models on the origins of runaway stars.We thank the anonymous referee for useful comments. We thank J. Bodensteiner, M. Gieles and M. Abdul-Masih for useful discussions. MC-C, MR, and JMP acknowledge financial support from the State Agency for Research of the Spanish Ministry of Science and Innovation under grants PID2022-136828NB-C41/AEI/10.13039/501100011033/ERDF/EU, and PID2022-138172NB-C43/AEI/10.13039/501100011033/ERDF/EU, and through the Unit of Excellence María de Maeztu 2020-2023 and 2025-2029 awards to the Institute of Cosmos Sciences (CEX2019-000918-M, CEX2024-001451-M, MICIU/AEI/10.13039/501100011033). We acknowledge financial support from Departament de Recerca i Universitats of Generalitat de Catalunya through grant 2021SGR00679. MC-C acknowledges the grant PRE2020-094140 funded by MCIN/AEI/10.13039/501100011033 and FSE/ESF funds. GH, CMS, and SS-D acknowledge support from the Spanish Ministry of Science and Innovation and Universities (MICIU) through the Spanish State Research Agency (AEI) through grants PID2021-122397NB-C21, PID2022-136640NB-C22, 10.13039/501100011033, and the Severo Ochoa Program 2020-2023 (CEX2019-000920-S). 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. Regarding the observing facilities, this research is based on observations made with the Mercator Telescope, operated by the Flemish Community at the Observatorio del Roque de los Muchachos (La Palma, Spain), of the Instituto de Astrofísica de Canarias. In particular, obtained with the HERMES spectrograph, which is supported by the Research Foundation – Flanders (FWO), Belgium, the Research Council of KU Leuven, Belgium, the Fonds National de la Recherche Scientifique (F.R.S.-FNRS), Belgium, the Royal Observatory of Belgium, the Observatoire de Genéve, Switzerland, and the Thüringer Landessternwarte Tautenburg, Germany. This work is also based on observations with the Nordic Optical Telescope, owned in collaboration by the University of Turku and Aarhus University, and operated jointly by Aarhus University, the University of Turku and the University of Oslo, representing Denmark, Finland and Norway, the University of Iceland and Stockholm University, at the Observatorio del Roque de los Muchachos, of the Instituto de Astrofísica de Canarias. Additionally this work is based on observations obtained with the FEROS spectrograph attached to the 2.2 m MPG/ESO telescope at the La Silla observatory (Chile). This research has made use of NASA’s Astrophysics Data System. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France.With funding from the Spanish government through the "María de Maeztu Unit of Excellence" accreditation (CEX2019-000918-M)With funding from the Spanish government through the "María de Maeztu Unit of Excellence" accreditation (CEX2024-001451-M)With funding from the Spanish government through the "Severo Ochoa Centre of Excelence" accreditation (CEX2019-000920-S)Peer reviewedEDP SciencesMinisterio de Ciencia e Innovación (España)Agencia Estatal de Investigación (España)Ministerio de Ciencia, Innovación y Universidades (España)Generalitat de CatalunyaCarretero-Castrillo, M. [0000-0002-1426-1311]Ribó, Marc [0000-0002-9931-4557]Paredes, Josep M. [0000-0002-1566-9044]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202620262026info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/424222http://arxiv.org/abs/2510.21577v1reponame:DIGITAL.CSIC. 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M.; Holgado, G.; Martinez-Sebastian, C.; Simon-Diaz, S.; 2026; Galactic O-type runaway stars; Centre de Donnees astronomique de Strasbourg (CDS); https://doi.org/10.26093/cds/vizier/bc-p1/lcbfhttps://doi.org/10.1051/0004-6361/202556646Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/4242222026-05-22T06:33:51Z
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