The evolution of the moment of inertia of stars

Yong Cheol Kim, S. Barnes

Research output: Contribution to journalArticle

Abstract

Observations of the rotation periods of cool open cluster stars display a distinctive dichotomy when plotted against stellar mass/color. Other measures of stellar activity are also known to be dependent on stellar mass and structure, especially the onset and characteristics of convection zones. One proposal for understanding the observed rotation period dichotomy suggested dependencies on the moment of inertia of either the whole star or that of only the outer convection zone (Barnes 2003). The moment of inertia of stars with the mass between 0.1Msun and 3.0Msun have been calculated using a version of Yale Stellar evolution code (aka YREC). Each star has been evolved from stellar birthline to the onset of the core He burning. For easy comparison to observations, we have calculated the isochrones of these quantities as well as the convective turnover time, of interest to the activity community.

Original languageEnglish
Pages (from-to)117-118
Number of pages2
JournalProceedings of the International Astronomical Union
Volume4
Issue numberS252
DOIs
Publication statusPublished - 2008 Oct 27

Fingerprint

moments of inertia
inertia
stars
dichotomies
stellar mass
convection
stellar activity
stellar structure
stellar evolution
open clusters
turnover
proposals
color

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics

Cite this

@article{d9e60cea8e294f309cd382d4b814beb2,
title = "The evolution of the moment of inertia of stars",
abstract = "Observations of the rotation periods of cool open cluster stars display a distinctive dichotomy when plotted against stellar mass/color. Other measures of stellar activity are also known to be dependent on stellar mass and structure, especially the onset and characteristics of convection zones. One proposal for understanding the observed rotation period dichotomy suggested dependencies on the moment of inertia of either the whole star or that of only the outer convection zone (Barnes 2003). The moment of inertia of stars with the mass between 0.1Msun and 3.0Msun have been calculated using a version of Yale Stellar evolution code (aka YREC). Each star has been evolved from stellar birthline to the onset of the core He burning. For easy comparison to observations, we have calculated the isochrones of these quantities as well as the convective turnover time, of interest to the activity community.",
author = "Kim, {Yong Cheol} and S. Barnes",
year = "2008",
month = "10",
day = "27",
doi = "10.1017/S174392130802259X",
language = "English",
volume = "4",
pages = "117--118",
journal = "Proceedings of the International Astronomical Union",
issn = "1743-9213",
publisher = "Cambridge University Press",
number = "S252",

}

The evolution of the moment of inertia of stars. / Kim, Yong Cheol; Barnes, S.

In: Proceedings of the International Astronomical Union, Vol. 4, No. S252, 27.10.2008, p. 117-118.

Research output: Contribution to journalArticle

TY - JOUR

T1 - The evolution of the moment of inertia of stars

AU - Kim, Yong Cheol

AU - Barnes, S.

PY - 2008/10/27

Y1 - 2008/10/27

N2 - Observations of the rotation periods of cool open cluster stars display a distinctive dichotomy when plotted against stellar mass/color. Other measures of stellar activity are also known to be dependent on stellar mass and structure, especially the onset and characteristics of convection zones. One proposal for understanding the observed rotation period dichotomy suggested dependencies on the moment of inertia of either the whole star or that of only the outer convection zone (Barnes 2003). The moment of inertia of stars with the mass between 0.1Msun and 3.0Msun have been calculated using a version of Yale Stellar evolution code (aka YREC). Each star has been evolved from stellar birthline to the onset of the core He burning. For easy comparison to observations, we have calculated the isochrones of these quantities as well as the convective turnover time, of interest to the activity community.

AB - Observations of the rotation periods of cool open cluster stars display a distinctive dichotomy when plotted against stellar mass/color. Other measures of stellar activity are also known to be dependent on stellar mass and structure, especially the onset and characteristics of convection zones. One proposal for understanding the observed rotation period dichotomy suggested dependencies on the moment of inertia of either the whole star or that of only the outer convection zone (Barnes 2003). The moment of inertia of stars with the mass between 0.1Msun and 3.0Msun have been calculated using a version of Yale Stellar evolution code (aka YREC). Each star has been evolved from stellar birthline to the onset of the core He burning. For easy comparison to observations, we have calculated the isochrones of these quantities as well as the convective turnover time, of interest to the activity community.

UR - http://www.scopus.com/inward/record.url?scp=54249153246&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=54249153246&partnerID=8YFLogxK

U2 - 10.1017/S174392130802259X

DO - 10.1017/S174392130802259X

M3 - Article

VL - 4

SP - 117

EP - 118

JO - Proceedings of the International Astronomical Union

JF - Proceedings of the International Astronomical Union

SN - 1743-9213

IS - S252

ER -