J/A+A/409/1017 Magnetic activity of 6 young solar stars. II (Messina+, 2003)
Magnetic activity of six young solar analogues.
II. Surface Differential Rotation from long-term photometry
Messina S., Guinan E.F.
<Astron. Astrophys. 409, 1017 (2003)>
=2003A&A...409.1017M 2003A&A...409.1017M
ADC_Keywords: Photometry ; Stars, late-type ; Stars, G-type ; Stars, K-type
Keywords: stars: activity - stars: late-type - stars: magnetic fields -
stars: starspots
Abstract:
The present paper is the second of a series dedicated to the study of
the magnetic activity in a selected sample of young solar analogues.
The sample includes five single G0-G5V stars with ages between
~=130Myr and 700Myr: EK Dra, π1 UMa, HN Peg, κ1 Cet and
BE Cet. In this study we also include the Pleiades-age (~=130Myr) K0V
star DX Leo. Our analysis is based on high precision photometric
observations carried out as part of "The Sun in Time" project, aimed
at a multiwavelength study of stars with solar-like global properties,
but with different ages and thus at different stages of evolution.
Description:
The following tables contain the results of the periodogram analysis
performed on the photometric data of six young solar analogues plus
the additional LQ Hya star. The following data are listed: first and
last observing HJD, number of observing nights, rotational period,
uncertainty on the rotational period, False Alarm Probability (FAP)
Objects:
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RA (2000) DE Designation(s) (File)
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00 22 51.8 -12 12 34 BE Cet = HD 1835 (table2.dat)
03 19 21.7 +03 22 13 kap1 Cet = HD 20630 (table3.dat)
08 39 11.7 +65 01 15 pi.1 UMa = HD 72905 (table4.dat)
21 44 31.2 +14 46 44 HN Peg = HD 206860 (table5.dat)
14 39 00.2 +64 17 30 EK Dra = HD 129333 (table6.dat)
09 32 43.8 +26 59 19 DX Leo = HD 82443 (table7.dat)
09 30 00.6 -10 57 48 LQ Hya = HD 82558 (table8.dat)
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 48 10 BE Cet periodogram analysis
table3.dat 49 6 κ1 Cet periodogram analysis
table4.dat 49 15 π1 UMa periodogram analysis
table5.dat 58 41 EK Dra periodogram analysis
table6.dat 56 8 HN Peg periodogram analysis
table7.dat 50 15 DX Leo periodogram analysis
table8.dat 55 16 LQ Hya periodogram analysis
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See also:
J/A+A/393/225 : Magnetic activity of 6 young solar analogues I (Messina+ 2002)
Byte-by-byte Description of file: table?.dat
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Bytes Format Units Label Explanations
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1- 5 I5 d JD1-2440000 First observing HJD
8- 12 I5 d JD2-2440000 Last observing HJD
15- 17 I3 --- Nights Number of observing nights
21- 26 F6.4 d Per Rotational period
29- 34 F6.4 d e_Per Uncertainty on P
37- 45 E9.3 --- FAP False Alarm Probability
47 I1 --- Note [1/2]? Note (1)
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Note (1): 1: primary period; 2: secondary period
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Acknowledgements: Sergio Messina
(End) Patricia Bauer [CDS] 01-Sep-2003