Differential Rotation in Young Low-mass Stars

A. Collier Cameron; J.R. Barnes; L. Kitchatinov; J-F. Donati

Differential Rotation in Young Low-mass Stars

A. Collier Cameron, J.R. Barnes, L. Kitchatinov, J-F. Donati

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Abstract

Multi-line Doppler imaging methods allow us to image young, rapidly rotating stars brighter than about V = 11.5, with ~ 3 degrees surface resolution. We have recently measured the latitude dependence of the surface rotation rate in three young G and K stars by cross-correlating Doppler images reconstructed from data sets secured several days apart. As a result, new theoretical models of solar and stellar internal rotation can be tested directly against the form, amplitude and spectral-type dependence of differential rotation in both Sun and stars. We present new maps of AB Dor, PZ Tel and RX J1508.6-4423, which all show a solar-like differential rotation pattern and rate of surface shear.

Original language	English
Title of host publication	In: Procs of 11th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun, ASP Conference Series 223
Publisher	Astronomical Society of the Pacific
Pages	251-60
ISBN (Print)	1-58381-055-2
Publication status	Published - 2001

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@inproceedings{cd4113d133e1450bbd15fcbd61fa0ccf,

title = "Differential Rotation in Young Low-mass Stars",

abstract = "Multi-line Doppler imaging methods allow us to image young, rapidly rotating stars brighter than about V = 11.5, with ~ 3 degrees surface resolution. We have recently measured the latitude dependence of the surface rotation rate in three young G and K stars by cross-correlating Doppler images reconstructed from data sets secured several days apart. As a result, new theoretical models of solar and stellar internal rotation can be tested directly against the form, amplitude and spectral-type dependence of differential rotation in both Sun and stars. We present new maps of AB Dor, PZ Tel and RX J1508.6-4423, which all show a solar-like differential rotation pattern and rate of surface shear.",

author = "{Collier Cameron}, A. and J.R. Barnes and L. Kitchatinov and J-F. Donati",

note = "Original paper can be found at: http://www.astrosociety.org/pubs/cs/222-252.html--Copyright Astronomical Society of the Pacific",

year = "2001",

language = "English",

isbn = "1-58381-055-2",

pages = "251--60",

booktitle = "In: Procs of 11th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun, ASP Conference Series 223",

publisher = "Astronomical Society of the Pacific",

address = "United States",

}

TY - GEN

T1 - Differential Rotation in Young Low-mass Stars

AU - Collier Cameron, A.

AU - Barnes, J.R.

AU - Kitchatinov, L.

AU - Donati, J-F.

N1 - Original paper can be found at: http://www.astrosociety.org/pubs/cs/222-252.html--Copyright Astronomical Society of the Pacific

PY - 2001

Y1 - 2001

N2 - Multi-line Doppler imaging methods allow us to image young, rapidly rotating stars brighter than about V = 11.5, with ~ 3 degrees surface resolution. We have recently measured the latitude dependence of the surface rotation rate in three young G and K stars by cross-correlating Doppler images reconstructed from data sets secured several days apart. As a result, new theoretical models of solar and stellar internal rotation can be tested directly against the form, amplitude and spectral-type dependence of differential rotation in both Sun and stars. We present new maps of AB Dor, PZ Tel and RX J1508.6-4423, which all show a solar-like differential rotation pattern and rate of surface shear.

AB - Multi-line Doppler imaging methods allow us to image young, rapidly rotating stars brighter than about V = 11.5, with ~ 3 degrees surface resolution. We have recently measured the latitude dependence of the surface rotation rate in three young G and K stars by cross-correlating Doppler images reconstructed from data sets secured several days apart. As a result, new theoretical models of solar and stellar internal rotation can be tested directly against the form, amplitude and spectral-type dependence of differential rotation in both Sun and stars. We present new maps of AB Dor, PZ Tel and RX J1508.6-4423, which all show a solar-like differential rotation pattern and rate of surface shear.

M3 - Conference contribution

SN - 1-58381-055-2

SP - 251

EP - 260

BT - In: Procs of 11th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun, ASP Conference Series 223

PB - Astronomical Society of the Pacific

ER -

Differential Rotation in Young Low-mass Stars

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