Rotation periods of selected members of the alpha Persei cluster - II

MA O'dell; Ronald William Hilditch; Andrew Collier Cameron; SA Bell

Rotation periods of selected members of the alpha Persei cluster - II

MA O'dell, Ronald William Hilditch, Andrew Collier Cameron, SA Bell

School of Physics and Astronomy

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

Abstract

We present the results of a photometric monitoring programme of nine G-K dwarf

The aim of this programme was to measure the axial rotation periods of five rapid rotators (v sin i > 50 km s(-1)) and four slow rotators (v sin i less than or equal to 10 km s(-1)) to further our study of the distribution of rotation rates of the low-mass population of the cluster. We successfully measured accurate rotation periods for all of the five rapid rotators, most of which exhibited significant rotational modulation.

In contrast the slow rotators exhibited light curve amplitudes below the threshold of photometric detectability. We applied a formal statistical analysis to our data and found strong evidence for variability (Delta V similar to 0.03 mag) in only one of the slow rotating targets.

Original language	English
Pages (from-to)	pp.874-884.
Number of pages	11
Journal	Monthly Notices of the Royal Astronomical Society
Volume	284
Issue number	4
Publication status	Published - 1 Feb 1997

Keywords

stars, activity
stars, late-type
stars, magnetic fields
stars, rotation
open clusters and associations, individual, alpha Persei
MAIN-SEQUENCE STARS
LOW-MASS STARS
SPECTRAL-ANALYSIS
TIME-SERIES
SPACED DATA
PHOTOMETRY
VELOCITIES
EVOLUTION
CURVES

Cite this

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title = "Rotation periods of selected members of the alpha Persei cluster - II",

abstract = "We present the results of a photometric monitoring programme of nine G-K dwarfThe aim of this programme was to measure the axial rotation periods of five rapid rotators (v sin i > 50 km s(-1)) and four slow rotators (v sin i less than or equal to 10 km s(-1)) to further our study of the distribution of rotation rates of the low-mass population of the cluster. We successfully measured accurate rotation periods for all of the five rapid rotators, most of which exhibited significant rotational modulation.In contrast the slow rotators exhibited light curve amplitudes below the threshold of photometric detectability. We applied a formal statistical analysis to our data and found strong evidence for variability (Delta V similar to 0.03 mag) in only one of the slow rotating targets.",

keywords = "stars, activity, stars, late-type, stars, magnetic fields, stars, rotation, open clusters and associations, individual, alpha Persei, MAIN-SEQUENCE STARS, LOW-MASS STARS, SPECTRAL-ANALYSIS, TIME-SERIES, SPACED DATA, PHOTOMETRY, VELOCITIES, EVOLUTION, CURVES",

author = "MA O'dell and Hilditch, {Ronald William} and Cameron, {Andrew Collier} and SA Bell",

year = "1997",

month = feb,

day = "1",

language = "English",

volume = "284",

pages = "pp.874--884.",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "4",

}

TY - JOUR

T1 - Rotation periods of selected members of the alpha Persei cluster - II

AU - O'dell, MA

AU - Hilditch, Ronald William

AU - Cameron, Andrew Collier

AU - Bell, SA

PY - 1997/2/1

Y1 - 1997/2/1

N2 - We present the results of a photometric monitoring programme of nine G-K dwarfThe aim of this programme was to measure the axial rotation periods of five rapid rotators (v sin i > 50 km s(-1)) and four slow rotators (v sin i less than or equal to 10 km s(-1)) to further our study of the distribution of rotation rates of the low-mass population of the cluster. We successfully measured accurate rotation periods for all of the five rapid rotators, most of which exhibited significant rotational modulation.In contrast the slow rotators exhibited light curve amplitudes below the threshold of photometric detectability. We applied a formal statistical analysis to our data and found strong evidence for variability (Delta V similar to 0.03 mag) in only one of the slow rotating targets.

AB - We present the results of a photometric monitoring programme of nine G-K dwarfThe aim of this programme was to measure the axial rotation periods of five rapid rotators (v sin i > 50 km s(-1)) and four slow rotators (v sin i less than or equal to 10 km s(-1)) to further our study of the distribution of rotation rates of the low-mass population of the cluster. We successfully measured accurate rotation periods for all of the five rapid rotators, most of which exhibited significant rotational modulation.In contrast the slow rotators exhibited light curve amplitudes below the threshold of photometric detectability. We applied a formal statistical analysis to our data and found strong evidence for variability (Delta V similar to 0.03 mag) in only one of the slow rotating targets.

KW - stars, activity

KW - stars, late-type

KW - stars, magnetic fields

KW - stars, rotation

KW - open clusters and associations, individual, alpha Persei

KW - MAIN-SEQUENCE STARS

KW - LOW-MASS STARS

KW - SPECTRAL-ANALYSIS

KW - TIME-SERIES

KW - SPACED DATA

KW - PHOTOMETRY

KW - VELOCITIES

KW - EVOLUTION

KW - CURVES

UR - http://www.scopus.com/inward/record.url?scp=0039010683&partnerID=8YFLogxK

M3 - Article

SN - 0035-8711

VL - 284

SP - pp.874-884.

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 4

ER -

Rotation periods of selected members of the alpha Persei cluster - II

Abstract

Keywords

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