Non-LTE abundances in ob stars: Preliminary results for 5 stars in the outer galactic disk

G. A. Bragançca; T. Lanz; S. Daflon; K. Cunha; C. D. Garmany; J. W. Glaspey; M. Borges Fernandes; M. S. Oey; T. Bensby; I. Hubeny

doi:10.1017/S1743921314006334

Non-LTE abundances in ob stars: Preliminary results for 5 stars in the outer galactic disk

G. A. Bragançca, T. Lanz, S. Daflon, K. Cunha, C. D. Garmany, J. W. Glaspey, M. Borges Fernandes, M. S. Oey, T. Bensby, I. Hubeny

Steward Observatory

Research output: Contribution to journal › Article › peer-review

Abstract

The aim of this study is to analyse and determine elemental abundances for a large sample of distant B stars in the outer Galactic disk in order to constrain the chemical distribution of the Galactic disk and models of chemical evolution of the Galaxy. Here, we present preliminary results on a few stars along with the adopted methodology based on securing simultaneous O and Si ionization equilibria with consistent NLTE model atmospheres.

Original language	English (US)
Pages (from-to)	90-91
Number of pages	2
Journal	Proceedings of the International Astronomical Union
Volume	9
DOIs	https://doi.org/10.1017/S1743921314006334
State	Published - 2014

Keywords

Galaxy: abundances
Galaxy: disk
Galaxy: evolution
early-type
stars: abundances
stars: fundamental parameters

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1017/S1743921314006334

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@article{5a22d8e4b1e74d26b002265542b0574e,

title = "Non-LTE abundances in ob stars: Preliminary results for 5 stars in the outer galactic disk",

abstract = "The aim of this study is to analyse and determine elemental abundances for a large sample of distant B stars in the outer Galactic disk in order to constrain the chemical distribution of the Galactic disk and models of chemical evolution of the Galaxy. Here, we present preliminary results on a few stars along with the adopted methodology based on securing simultaneous O and Si ionization equilibria with consistent NLTE model atmospheres.",

keywords = "Galaxy: abundances, Galaxy: disk, Galaxy: evolution, early-type, stars: abundances, stars: fundamental parameters",

author = "Bragan{\c c}ca, {G. A.} and T. Lanz and S. Daflon and K. Cunha and Garmany, {C. D.} and Glaspey, {J. W.} and {Borges Fernandes}, M. and Oey, {M. S.} and T. Bensby and I. Hubeny",

note = "Publisher Copyright: Copyright {\textcopyright} International Astronomical Union 2015.",

year = "2014",

doi = "10.1017/S1743921314006334",

language = "English (US)",

volume = "9",

pages = "90--91",

journal = "Proceedings of the International Astronomical Union",

issn = "1743-9213",

publisher = "Cambridge University Press",

}

TY - JOUR

T1 - Non-LTE abundances in ob stars

T2 - Preliminary results for 5 stars in the outer galactic disk

AU - Bragançca, G. A.

AU - Lanz, T.

AU - Daflon, S.

AU - Cunha, K.

AU - Garmany, C. D.

AU - Glaspey, J. W.

AU - Borges Fernandes, M.

AU - Oey, M. S.

AU - Bensby, T.

AU - Hubeny, I.

PY - 2014

Y1 - 2014

N2 - The aim of this study is to analyse and determine elemental abundances for a large sample of distant B stars in the outer Galactic disk in order to constrain the chemical distribution of the Galactic disk and models of chemical evolution of the Galaxy. Here, we present preliminary results on a few stars along with the adopted methodology based on securing simultaneous O and Si ionization equilibria with consistent NLTE model atmospheres.

AB - The aim of this study is to analyse and determine elemental abundances for a large sample of distant B stars in the outer Galactic disk in order to constrain the chemical distribution of the Galactic disk and models of chemical evolution of the Galaxy. Here, we present preliminary results on a few stars along with the adopted methodology based on securing simultaneous O and Si ionization equilibria with consistent NLTE model atmospheres.

KW - Galaxy: abundances

KW - Galaxy: disk

KW - Galaxy: evolution

KW - early-type

KW - stars: abundances

KW - stars: fundamental parameters

UR - http://www.scopus.com/inward/record.url?scp=84921536365&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84921536365&partnerID=8YFLogxK

U2 - 10.1017/S1743921314006334

DO - 10.1017/S1743921314006334

M3 - Article

AN - SCOPUS:84921536365

SN - 1743-9213

VL - 9

SP - 90

EP - 91

JO - Proceedings of the International Astronomical Union

JF - Proceedings of the International Astronomical Union

ER -

Non-LTE abundances in ob stars: Preliminary results for 5 stars in the outer galactic disk

Abstract

Keywords

ASJC Scopus subject areas

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