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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/30216
Ver los metadatos del registro completo
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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 Técnicas2025-09-29T09:37:52Zoai: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:34982025-09-29 09:37:52.804CONICET 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 |
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1844613194759274496 |
score |
13.070432 |