Differential rotation on rapidly rotating stars

A. Collier Cameron

doi:10.1002/asna.200710880

Differential rotation on rapidly rotating stars

A. Collier Cameron

School of Physics and Astronomy

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

Abstract

Theories of meridional circulation and differential rotation in stellar convective zones predict trends in surface flow patterns on main-sequence stars that are amenable to direct observational testing. Here I summarise progress made in the last few years in determining surface differential rotation patterns on rapidly-rotating young main-sequence stars of spectral types F, G, K and M. Differential rotation increases strongly with increasing effective temperature along the main sequence. The shear rate appears to increase with depth in the sub-photospheric layers. Tidal locking in close binaries appears to suppress differential rotation, but better statistics are needed before this conclusion can be trusted. (c) 2007 WILEY VCH Verlag GmbH & Co. KGaA, Weinheim.

Original language	English
Pages (from-to)	1030-1033
Number of pages	4
Journal	Astronomische Nachrichten
Volume	328
Issue number	10
DOIs	https://doi.org/10.1002/asna.200710880
Publication status	Published - Oct 2007

Keywords

stars : activity
stars : imaging
stars : rotation
starspots
COOL ACTIVE STARS
MAGNETIC TOPOLOGY
AB-DORADUS
V711 TAURI
HR 1099
PATTERNS
TEMPERATURE
DEPENDENCE
BINARY
FIELD

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title = "Differential rotation on rapidly rotating stars",

abstract = "Theories of meridional circulation and differential rotation in stellar convective zones predict trends in surface flow patterns on main-sequence stars that are amenable to direct observational testing. Here I summarise progress made in the last few years in determining surface differential rotation patterns on rapidly-rotating young main-sequence stars of spectral types F, G, K and M. Differential rotation increases strongly with increasing effective temperature along the main sequence. The shear rate appears to increase with depth in the sub-photospheric layers. Tidal locking in close binaries appears to suppress differential rotation, but better statistics are needed before this conclusion can be trusted. (c) 2007 WILEY VCH Verlag GmbH \& Co. KGaA, Weinheim.",

keywords = "stars : activity, stars : imaging, stars : rotation, starspots, COOL ACTIVE STARS, MAGNETIC TOPOLOGY, AB-DORADUS, V711 TAURI, HR 1099, PATTERNS, TEMPERATURE, DEPENDENCE, BINARY, FIELD",

author = "Cameron, \{A. Collier\}",

year = "2007",

month = oct,

doi = "10.1002/asna.200710880",

language = "English",

volume = "328",

pages = "1030--1033",

journal = "Astronomische Nachrichten",

issn = "1521-3994",

publisher = "Wiley-VCH, Weinheim",

number = "10",

}

TY - JOUR

T1 - Differential rotation on rapidly rotating stars

AU - Cameron, A. Collier

PY - 2007/10

Y1 - 2007/10

N2 - Theories of meridional circulation and differential rotation in stellar convective zones predict trends in surface flow patterns on main-sequence stars that are amenable to direct observational testing. Here I summarise progress made in the last few years in determining surface differential rotation patterns on rapidly-rotating young main-sequence stars of spectral types F, G, K and M. Differential rotation increases strongly with increasing effective temperature along the main sequence. The shear rate appears to increase with depth in the sub-photospheric layers. Tidal locking in close binaries appears to suppress differential rotation, but better statistics are needed before this conclusion can be trusted. (c) 2007 WILEY VCH Verlag GmbH & Co. KGaA, Weinheim.

AB - Theories of meridional circulation and differential rotation in stellar convective zones predict trends in surface flow patterns on main-sequence stars that are amenable to direct observational testing. Here I summarise progress made in the last few years in determining surface differential rotation patterns on rapidly-rotating young main-sequence stars of spectral types F, G, K and M. Differential rotation increases strongly with increasing effective temperature along the main sequence. The shear rate appears to increase with depth in the sub-photospheric layers. Tidal locking in close binaries appears to suppress differential rotation, but better statistics are needed before this conclusion can be trusted. (c) 2007 WILEY VCH Verlag GmbH & Co. KGaA, Weinheim.

KW - stars : activity

KW - stars : imaging

KW - stars : rotation

KW - starspots

KW - COOL ACTIVE STARS

KW - MAGNETIC TOPOLOGY

KW - AB-DORADUS

KW - V711 TAURI

KW - HR 1099

KW - PATTERNS

KW - TEMPERATURE

KW - DEPENDENCE

KW - BINARY

KW - FIELD

UR - https://www.scopus.com/pages/publications/38049119624

U2 - 10.1002/asna.200710880

DO - 10.1002/asna.200710880

M3 - Article

SN - 1521-3994

VL - 328

SP - 1030

EP - 1033

JO - Astronomische Nachrichten

JF - Astronomische Nachrichten

IS - 10

ER -

Differential rotation on rapidly rotating stars

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Astrophysics at St Andrews: Astrophysics at St.Andrews

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Differential rotation on rapidly rotating stars

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Keywords

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Astrophysics at St Andrews: Astrophysics at St.Andrews

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