A probable pre-main sequence chemically peculiar star in the open cluster Stock 16

Autores
Netopil, M.; Fossati, L.; Paunzen, E.; Zwintz, K.; Pintado, Olga Ines; Bagnulo, S.
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We used the Ultraviolet and Visual Echelle Spectrograph of the ESO-Very Large Telescope to obtain a high resolution and high signal-to-noise ratio spectrum of Stock 16-12, an early-type star which previous Δa photometric observations suggest being a chemically peculiar (CP) star. We used spectral synthesis to perform a detailed abundance analysis obtaining an effective temperature of 8400 ± 400 K, a surface gravity of 4.1 ± 0.4, a microturbulence velocity of 3.4 +0.7−0.3 −0.3+0.7 km s−1, and a projected rotational velocity of 68 ± 4 km s−1. We provide photometric and spectroscopic evidence showing the star is most likely a member of the young Stock 16 open cluster (age 3–8 Myr). The probable cluster membership, the star's position in the Hertzsprung–Russell diagram, and the found infrared excess strongly suggest the star is still in the pre-main-sequence (PMS) phase. We used PMS evolutionary tracks to determine the stellar mass, which ranges between 1.95 and 2.3 M⊙, depending upon the adopted spectroscopic or photometric data results. Similarly, we obtained a stellar age ranging between 4 and 6 Myr, in agreement with that of the cluster. Because the star's chemical abundance pattern resembles well that known of main sequence CP metallic line (Am) stars, the object sets important constraints to the diffusion theory. Additional spectroscopic and spectropolarimetric data allowed us to conclude that the object is probably a single non-magnetic star.
Fil: Netopil, M.. Masaryk University; República Checa
Fil: Fossati, L.. Universitaet Bonn; Alemania
Fil: Paunzen, E.. Masaryk University; República Checa
Fil: Zwintz, K.. Katholikie Universiteit Leuven; Bélgica
Fil: Pintado, Olga Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Correlación Geológica. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Departamento de Geología. Cátedra Geología Estructural. Instituto Superior de Correlación Geológica; Argentina
Fil: Bagnulo, S.. Armagh Observatory; Irlanda
Materia
Stars: abundances
Stars: chemically peculiar
Stars: pre-main-sequence
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:11336/30216
Acceder
id CONICETDig_5fc5ba4d66835e85426544f3ba986344
oai_identifier_str oai:ri.conicet.gov.ar:11336/30216
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling A probable pre-main sequence chemically peculiar star in the open cluster Stock 16Netopil, M.Fossati, L.Paunzen, E.Zwintz, K.Pintado, Olga InesBagnulo, S.Stars: abundancesStars: chemically peculiarStars: pre-main-sequencehttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We used the Ultraviolet and Visual Echelle Spectrograph of the ESO-Very Large Telescope to obtain a high resolution and high signal-to-noise ratio spectrum of Stock 16-12, an early-type star which previous Δa photometric observations suggest being a chemically peculiar (CP) star. We used spectral synthesis to perform a detailed abundance analysis obtaining an effective temperature of 8400 ± 400 K, a surface gravity of 4.1 ± 0.4, a microturbulence velocity of 3.4 +0.7−0.3 −0.3+0.7 km s−1, and a projected rotational velocity of 68 ± 4 km s−1. We provide photometric and spectroscopic evidence showing the star is most likely a member of the young Stock 16 open cluster (age 3–8 Myr). The probable cluster membership, the star's position in the Hertzsprung–Russell diagram, and the found infrared excess strongly suggest the star is still in the pre-main-sequence (PMS) phase. We used PMS evolutionary tracks to determine the stellar mass, which ranges between 1.95 and 2.3 M⊙, depending upon the adopted spectroscopic or photometric data results. Similarly, we obtained a stellar age ranging between 4 and 6 Myr, in agreement with that of the cluster. Because the star's chemical abundance pattern resembles well that known of main sequence CP metallic line (Am) stars, the object sets important constraints to the diffusion theory. Additional spectroscopic and spectropolarimetric data allowed us to conclude that the object is probably a single non-magnetic star.Fil: Netopil, M.. Masaryk University; República ChecaFil: Fossati, L.. Universitaet Bonn; AlemaniaFil: Paunzen, E.. Masaryk University; República ChecaFil: Zwintz, K.. Katholikie Universiteit Leuven; BélgicaFil: Pintado, Olga Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Correlación Geológica. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Departamento de Geología. Cátedra Geología Estructural. Instituto Superior de Correlación Geológica; ArgentinaFil: Bagnulo, S.. Armagh Observatory; IrlandaOxford University Press2014-07info: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/11336/30216Netopil, M.; Fossati, L.; Paunzen, E.; Zwintz, K.; Pintado, Olga Ines; et al.; A probable pre-main sequence chemically peculiar star in the open cluster Stock 16; Oxford University Press; Monthly Notices of the Royal Astronomical Society; 442; 2; 7-2014; 3761-37680035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/ 10.1093/mnras/stu1130info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/442/4/3761/1362487info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:06:04Zoai:ri.conicet.gov.ar:11336/30216instacron: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 11:06:04.243CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A probable pre-main sequence chemically peculiar star in the open cluster Stock 16
title A probable pre-main sequence chemically peculiar star in the open cluster Stock 16
spellingShingle A probable pre-main sequence chemically peculiar star in the open cluster Stock 16
Netopil, M.
Stars: abundances
Stars: chemically peculiar
Stars: pre-main-sequence
title_short A probable pre-main sequence chemically peculiar star in the open cluster Stock 16
title_full A probable pre-main sequence chemically peculiar star in the open cluster Stock 16
title_fullStr A probable pre-main sequence chemically peculiar star in the open cluster Stock 16
title_full_unstemmed A probable pre-main sequence chemically peculiar star in the open cluster Stock 16
title_sort A probable pre-main sequence chemically peculiar star in the open cluster Stock 16
dc.creator.none.fl_str_mv Netopil, M.
Fossati, L.
Paunzen, E.
Zwintz, K.
Pintado, Olga Ines
Bagnulo, S.
author Netopil, M.
author_facet Netopil, M.
Fossati, L.
Paunzen, E.
Zwintz, K.
Pintado, Olga Ines
Bagnulo, S.
author_role author
author2 Fossati, L.
Paunzen, E.
Zwintz, K.
Pintado, Olga Ines
Bagnulo, S.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Stars: abundances
Stars: chemically peculiar
Stars: pre-main-sequence
topic Stars: abundances
Stars: chemically peculiar
Stars: pre-main-sequence
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We used the Ultraviolet and Visual Echelle Spectrograph of the ESO-Very Large Telescope to obtain a high resolution and high signal-to-noise ratio spectrum of Stock 16-12, an early-type star which previous Δa photometric observations suggest being a chemically peculiar (CP) star. We used spectral synthesis to perform a detailed abundance analysis obtaining an effective temperature of 8400 ± 400 K, a surface gravity of 4.1 ± 0.4, a microturbulence velocity of 3.4 +0.7−0.3 −0.3+0.7 km s−1, and a projected rotational velocity of 68 ± 4 km s−1. We provide photometric and spectroscopic evidence showing the star is most likely a member of the young Stock 16 open cluster (age 3–8 Myr). The probable cluster membership, the star's position in the Hertzsprung–Russell diagram, and the found infrared excess strongly suggest the star is still in the pre-main-sequence (PMS) phase. We used PMS evolutionary tracks to determine the stellar mass, which ranges between 1.95 and 2.3 M⊙, depending upon the adopted spectroscopic or photometric data results. Similarly, we obtained a stellar age ranging between 4 and 6 Myr, in agreement with that of the cluster. Because the star's chemical abundance pattern resembles well that known of main sequence CP metallic line (Am) stars, the object sets important constraints to the diffusion theory. Additional spectroscopic and spectropolarimetric data allowed us to conclude that the object is probably a single non-magnetic star.
Fil: Netopil, M.. Masaryk University; República Checa
Fil: Fossati, L.. Universitaet Bonn; Alemania
Fil: Paunzen, E.. Masaryk University; República Checa
Fil: Zwintz, K.. Katholikie Universiteit Leuven; Bélgica
Fil: Pintado, Olga Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Correlación Geológica. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Departamento de Geología. Cátedra Geología Estructural. Instituto Superior de Correlación Geológica; Argentina
Fil: Bagnulo, S.. Armagh Observatory; Irlanda
description We used the Ultraviolet and Visual Echelle Spectrograph of the ESO-Very Large Telescope to obtain a high resolution and high signal-to-noise ratio spectrum of Stock 16-12, an early-type star which previous Δa photometric observations suggest being a chemically peculiar (CP) star. We used spectral synthesis to perform a detailed abundance analysis obtaining an effective temperature of 8400 ± 400 K, a surface gravity of 4.1 ± 0.4, a microturbulence velocity of 3.4 +0.7−0.3 −0.3+0.7 km s−1, and a projected rotational velocity of 68 ± 4 km s−1. We provide photometric and spectroscopic evidence showing the star is most likely a member of the young Stock 16 open cluster (age 3–8 Myr). The probable cluster membership, the star's position in the Hertzsprung–Russell diagram, and the found infrared excess strongly suggest the star is still in the pre-main-sequence (PMS) phase. We used PMS evolutionary tracks to determine the stellar mass, which ranges between 1.95 and 2.3 M⊙, depending upon the adopted spectroscopic or photometric data results. Similarly, we obtained a stellar age ranging between 4 and 6 Myr, in agreement with that of the cluster. Because the star's chemical abundance pattern resembles well that known of main sequence CP metallic line (Am) stars, the object sets important constraints to the diffusion theory. Additional spectroscopic and spectropolarimetric data allowed us to conclude that the object is probably a single non-magnetic star.
publishDate 2014
dc.date.none.fl_str_mv 2014-07
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/11336/30216
Netopil, M.; Fossati, L.; Paunzen, E.; Zwintz, K.; Pintado, Olga Ines; et al.; A probable pre-main sequence chemically peculiar star in the open cluster Stock 16; Oxford University Press; Monthly Notices of the Royal Astronomical Society; 442; 2; 7-2014; 3761-3768
0035-8711
CONICET Digital
CONICET
url http://hdl.handle.net/11336/30216
identifier_str_mv Netopil, M.; Fossati, L.; Paunzen, E.; Zwintz, K.; Pintado, Olga Ines; et al.; A probable pre-main sequence chemically peculiar star in the open cluster Stock 16; Oxford University Press; Monthly Notices of the Royal Astronomical Society; 442; 2; 7-2014; 3761-3768
0035-8711
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/ 10.1093/mnras/stu1130
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/442/4/3761/1362487
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 Oxford University Press
publisher.none.fl_str_mv Oxford University Press
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
_version_ 1846781352217673728
score 12.982451

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