Spectroscopy with three-dimensional model atmospheres of late-type stars

Remo Collet

doi:10.1017/S174392131600466X

Spectroscopy with three-dimensional model atmospheres of late-type stars

Remo Collet^*

^*Corresponding author for this work

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

Abstract

In this contribution, I present the results of a differential analysis of CH spectral lines for the determination of carbon abundances with three- and one-dimensional model atmospheres of late-type stars at various metallicities. 3D-1D abundance corrections are found to be significant particularly at low metallicities and for turn-off stars. The dependence of 3D-1D carbon abundance corrections on the stellar C/O ratio is also discussed.

Original language	English
Pages (from-to)	151-153
Number of pages	3
Journal	Proceedings of the International Astronomical Union
Volume	11
Issue number	A29B
DOIs	https://doi.org/10.1017/S174392131600466X
Publication status	Published - 2015

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title = "Spectroscopy with three-dimensional model atmospheres of late-type stars",

abstract = "In this contribution, I present the results of a differential analysis of CH spectral lines for the determination of carbon abundances with three- and one-dimensional model atmospheres of late-type stars at various metallicities. 3D-1D abundance corrections are found to be significant particularly at low metallicities and for turn-off stars. The dependence of 3D-1D carbon abundance corrections on the stellar C/O ratio is also discussed.",

keywords = "convection, hydrodynamics, line: formation, radiative transfer, stars: abundances, stars: atmospheres, stars: carbon, stars: late-type",

author = "Remo Collet",

note = "Publisher Copyright: {\textcopyright} International Astronomical Union 2016.",

year = "2015",

doi = "10.1017/S174392131600466X",

language = "English",

volume = "11",

pages = "151--153",

journal = "Proceedings of the International Astronomical Union",

issn = "1743-9213",

publisher = "Cambridge University Press",

number = "A29B",

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TY - JOUR

T1 - Spectroscopy with three-dimensional model atmospheres of late-type stars

AU - Collet, Remo

N1 - Publisher Copyright: © International Astronomical Union 2016.

PY - 2015

Y1 - 2015

N2 - In this contribution, I present the results of a differential analysis of CH spectral lines for the determination of carbon abundances with three- and one-dimensional model atmospheres of late-type stars at various metallicities. 3D-1D abundance corrections are found to be significant particularly at low metallicities and for turn-off stars. The dependence of 3D-1D carbon abundance corrections on the stellar C/O ratio is also discussed.

AB - In this contribution, I present the results of a differential analysis of CH spectral lines for the determination of carbon abundances with three- and one-dimensional model atmospheres of late-type stars at various metallicities. 3D-1D abundance corrections are found to be significant particularly at low metallicities and for turn-off stars. The dependence of 3D-1D carbon abundance corrections on the stellar C/O ratio is also discussed.

KW - convection

KW - hydrodynamics

KW - line: formation

KW - radiative transfer

KW - stars: abundances

KW - stars: atmospheres

KW - stars: carbon

KW - stars: late-type

UR - https://www.scopus.com/pages/publications/84992597379

U2 - 10.1017/S174392131600466X

DO - 10.1017/S174392131600466X

M3 - Article

SN - 1743-9213

VL - 11

SP - 151

EP - 153

JO - Proceedings of the International Astronomical Union

JF - Proceedings of the International Astronomical Union

IS - A29B

ER -

Spectroscopy with three-dimensional model atmospheres of late-type stars

Abstract

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