Further results from the galactic O-Star Spectroscopic Survey: rapidly rotating late ON giants

Autores
Walborn, Nolan R.; Maíz Apellániz, Jesús; Sota, Alfredo; Alfaro, Emilio J.; Morrell, Nidia I.; Barba, Rodolfo Hector; Arias, Julia Ines; Gamen, Roberto Claudio
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
With new data from the Galactic O-Star Spectroscopic Survey, we confirm and expand the ONn category of late-O, nitrogen-enriched (N), rapidly rotating (n) giants. In particular, we have discovered two “clones” (HD 102415 and HD 117490) of one of the most rapidly rotating O stars previously known (HD 191423, “Howarth’s Star”). We compare the locations of these objects in the theoretical H-R diagram to those of slowly rotating ON dwarfs and supergiants. All ON giants known to date are rapid rotators, whereas no ON dwarf or supergiant is, but all ON stars are small fractions of their respective spectral-type/luminosity-class/rotational subcategories. The ONn giants, displaying both substantial processed material and high rotation at an intermediate evolutionary stage, may provide significant information about the development of these properties. They may have preserved high initial rotational velocities or may have been spun up by terminal-age main-sequence core contraction; alternatively, and perhaps more likely, they may be products of binary mass transfer. At least some of them are also runaway stars.
Fil: Walborn, Nolan R.. Space Telescope Science Institute; Estados Unidos
Fil: Maíz Apellániz, Jesús. Consejo Superior de Investigaciones Cientificas. Instituto de Astrofísica de Andalucía; España
Fil: Sota, Alfredo. Consejo Superior de Investigaciones Cientificas. Instituto de Astrofísica de Andalucía; España
Fil: Alfaro, Emilio J.. Consejo Superior de Investigaciones Cientificas. Instituto de Astrofísica de Andalucía; España
Fil: Morrell, Nidia I.. The Carnegie Observatories. Las Campanas Observatory; Chile
Fil: Barba, Rodolfo Hector. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina. Universidad de la Serena; Chile
Fil: Arias, Julia Ines. Universidad de la Serena; Chile
Fil: Gamen, Roberto Claudio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina
Materia
Abundances of Stars
Early Type Stars
Evolution of Stars
Fundamental Parameters of Stars
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/10068
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/10068
network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Further results from the galactic O-Star Spectroscopic Survey: rapidly rotating late ON giantsWalborn, Nolan R.Maíz Apellániz, JesúsSota, AlfredoAlfaro, Emilio J.Morrell, Nidia I.Barba, Rodolfo HectorArias, Julia InesGamen, Roberto ClaudioAbundances of StarsEarly Type StarsEvolution of StarsFundamental Parameters of Starshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1With new data from the Galactic O-Star Spectroscopic Survey, we confirm and expand the ONn category of late-O, nitrogen-enriched (N), rapidly rotating (n) giants. In particular, we have discovered two “clones” (HD 102415 and HD 117490) of one of the most rapidly rotating O stars previously known (HD 191423, “Howarth’s Star”). We compare the locations of these objects in the theoretical H-R diagram to those of slowly rotating ON dwarfs and supergiants. All ON giants known to date are rapid rotators, whereas no ON dwarf or supergiant is, but all ON stars are small fractions of their respective spectral-type/luminosity-class/rotational subcategories. The ONn giants, displaying both substantial processed material and high rotation at an intermediate evolutionary stage, may provide significant information about the development of these properties. They may have preserved high initial rotational velocities or may have been spun up by terminal-age main-sequence core contraction; alternatively, and perhaps more likely, they may be products of binary mass transfer. At least some of them are also runaway stars.Fil: Walborn, Nolan R.. Space Telescope Science Institute; Estados UnidosFil: Maíz Apellániz, Jesús. Consejo Superior de Investigaciones Cientificas. Instituto de Astrofísica de Andalucía; EspañaFil: Sota, Alfredo. Consejo Superior de Investigaciones Cientificas. Instituto de Astrofísica de Andalucía; EspañaFil: Alfaro, Emilio J.. Consejo Superior de Investigaciones Cientificas. Instituto de Astrofísica de Andalucía; EspañaFil: Morrell, Nidia I.. The Carnegie Observatories. Las Campanas Observatory; ChileFil: Barba, Rodolfo Hector. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina. Universidad de la Serena; ChileFil: Arias, Julia Ines. Universidad de la Serena; ChileFil: Gamen, Roberto Claudio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; ArgentinaIop Publishing2011-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/10068Walborn, Nolan R.; Maíz Apellániz, Jesús; Sota, Alfredo; Alfaro, Emilio J.; Morrell, Nidia I.; et al.; Further results from the galactic O-Star Spectroscopic Survey: rapidly rotating late ON giants; Iop Publishing; Astrophysical Journal; 142; 5; 11-2011; 150-1560004-637Xenginfo:eu-repo/semantics/altIdentifier/doi/10.1088/0004-6256/142/5/150info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0004-6256/142/5/150/metainfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:06:00Zoai:ri.conicet.gov.ar:11336/10068instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:06:00.638CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Further results from the galactic O-Star Spectroscopic Survey: rapidly rotating late ON giants
title Further results from the galactic O-Star Spectroscopic Survey: rapidly rotating late ON giants
spellingShingle Further results from the galactic O-Star Spectroscopic Survey: rapidly rotating late ON giants
Walborn, Nolan R.
Abundances of Stars
Early Type Stars
Evolution of Stars
Fundamental Parameters of Stars
title_short Further results from the galactic O-Star Spectroscopic Survey: rapidly rotating late ON giants
title_full Further results from the galactic O-Star Spectroscopic Survey: rapidly rotating late ON giants
title_fullStr Further results from the galactic O-Star Spectroscopic Survey: rapidly rotating late ON giants
title_full_unstemmed Further results from the galactic O-Star Spectroscopic Survey: rapidly rotating late ON giants
title_sort Further results from the galactic O-Star Spectroscopic Survey: rapidly rotating late ON giants
dc.creator.none.fl_str_mv Walborn, Nolan R.
Maíz Apellániz, Jesús
Sota, Alfredo
Alfaro, Emilio J.
Morrell, Nidia I.
Barba, Rodolfo Hector
Arias, Julia Ines
Gamen, Roberto Claudio
author Walborn, Nolan R.
author_facet Walborn, Nolan R.
Maíz Apellániz, Jesús
Sota, Alfredo
Alfaro, Emilio J.
Morrell, Nidia I.
Barba, Rodolfo Hector
Arias, Julia Ines
Gamen, Roberto Claudio
author_role author
author2 Maíz Apellániz, Jesús
Sota, Alfredo
Alfaro, Emilio J.
Morrell, Nidia I.
Barba, Rodolfo Hector
Arias, Julia Ines
Gamen, Roberto Claudio
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Abundances of Stars
Early Type Stars
Evolution of Stars
Fundamental Parameters of Stars
topic Abundances of Stars
Early Type Stars
Evolution of Stars
Fundamental Parameters of Stars
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv With new data from the Galactic O-Star Spectroscopic Survey, we confirm and expand the ONn category of late-O, nitrogen-enriched (N), rapidly rotating (n) giants. In particular, we have discovered two “clones” (HD 102415 and HD 117490) of one of the most rapidly rotating O stars previously known (HD 191423, “Howarth’s Star”). We compare the locations of these objects in the theoretical H-R diagram to those of slowly rotating ON dwarfs and supergiants. All ON giants known to date are rapid rotators, whereas no ON dwarf or supergiant is, but all ON stars are small fractions of their respective spectral-type/luminosity-class/rotational subcategories. The ONn giants, displaying both substantial processed material and high rotation at an intermediate evolutionary stage, may provide significant information about the development of these properties. They may have preserved high initial rotational velocities or may have been spun up by terminal-age main-sequence core contraction; alternatively, and perhaps more likely, they may be products of binary mass transfer. At least some of them are also runaway stars.
Fil: Walborn, Nolan R.. Space Telescope Science Institute; Estados Unidos
Fil: Maíz Apellániz, Jesús. Consejo Superior de Investigaciones Cientificas. Instituto de Astrofísica de Andalucía; España
Fil: Sota, Alfredo. Consejo Superior de Investigaciones Cientificas. Instituto de Astrofísica de Andalucía; España
Fil: Alfaro, Emilio J.. Consejo Superior de Investigaciones Cientificas. Instituto de Astrofísica de Andalucía; España
Fil: Morrell, Nidia I.. The Carnegie Observatories. Las Campanas Observatory; Chile
Fil: Barba, Rodolfo Hector. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina. Universidad de la Serena; Chile
Fil: Arias, Julia Ines. Universidad de la Serena; Chile
Fil: Gamen, Roberto Claudio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina
description With new data from the Galactic O-Star Spectroscopic Survey, we confirm and expand the ONn category of late-O, nitrogen-enriched (N), rapidly rotating (n) giants. In particular, we have discovered two “clones” (HD 102415 and HD 117490) of one of the most rapidly rotating O stars previously known (HD 191423, “Howarth’s Star”). We compare the locations of these objects in the theoretical H-R diagram to those of slowly rotating ON dwarfs and supergiants. All ON giants known to date are rapid rotators, whereas no ON dwarf or supergiant is, but all ON stars are small fractions of their respective spectral-type/luminosity-class/rotational subcategories. The ONn giants, displaying both substantial processed material and high rotation at an intermediate evolutionary stage, may provide significant information about the development of these properties. They may have preserved high initial rotational velocities or may have been spun up by terminal-age main-sequence core contraction; alternatively, and perhaps more likely, they may be products of binary mass transfer. At least some of them are also runaway stars.
publishDate 2011
dc.date.none.fl_str_mv 2011-11
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/10068
Walborn, Nolan R.; Maíz Apellániz, Jesús; Sota, Alfredo; Alfaro, Emilio J.; Morrell, Nidia I.; et al.; Further results from the galactic O-Star Spectroscopic Survey: rapidly rotating late ON giants; Iop Publishing; Astrophysical Journal; 142; 5; 11-2011; 150-156
0004-637X
url http://hdl.handle.net/11336/10068
identifier_str_mv Walborn, Nolan R.; Maíz Apellániz, Jesús; Sota, Alfredo; Alfaro, Emilio J.; Morrell, Nidia I.; et al.; Further results from the galactic O-Star Spectroscopic Survey: rapidly rotating late ON giants; Iop Publishing; Astrophysical Journal; 142; 5; 11-2011; 150-156
0004-637X
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1088/0004-6256/142/5/150
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0004-6256/142/5/150/meta
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Iop Publishing
publisher.none.fl_str_mv Iop Publishing
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.982451

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