J/A+A/577/A84 V352 CMa V-band differential light curve (Kajatkari+, 2015)
Periodicity in some light curves of the solar analogue V352 CMa.
Kajatkari P., Jetsu L., Cole E., Hackman T., Henry G. W., Joutsiniemi S-L.,
Lehtinen J., Makela V., Porceddu S., Ryynanen K., Solea V.
<Astron. Astrophys. 577, A84 (2015)>
=2015A&A...577A..84K 2015A&A...577A..84K
ADC_Keywords: Stars, variable ; Magnitudes
Keywords: methods: data analysis - stars: activity - starspots -
stars: individual: V352 CMa
Abstract:
We perform detailed time series analysis for V-band photometry of the
young active star V352 CMa to investigate the characteristics of its
magnetic activity in both long and short time scale and also to
estimate its differential rotation.
Description:
The included files present the numerical data of our analysis of the
V352 CMa photometry. The data consists of differential Johnson V-band
photometry using the star HD 43879 as the comparison star.
The analysis has been performed using our previously published
continuous period search (CPS) method, described in detail in Lehtinen
et al., 2011A&A...527A.136L 2011A&A...527A.136L, Cat. J/A+A/527/A136.
Objects:
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RA (2000) DE Designation(s)
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06 13 45.30 -23 51 43.0 V352 CMa = HD 43162
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
phot.dat 19 1257 Differential photometry of V352 CMa
res.dat 185 485 *Numerical results of the CPS analysis
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Note on res.dat: Continuous Period Search: each line consists of
numerical results for one single dataset.
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See also:
J/A+A/527/A136 : HD 116956 V-band differential light curve (Lehtinen+, 2011)
J/A+A/542/A38 : LQ Hya V-band differential light curve (Lehtinen+, 2012)
Byte-by-byte Description of file: phot.dat
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Bytes Format Units Label Explanations
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1- 12 F12.4 d HJD Heliodentric Julian Date
14- 19 F6.3 mag DVmag Differential V-band photometry
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Byte-by-byte Description of file: res.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- SEG [1/14] Segment number
4- 13 F10.4 d t0 1st timepoint in SEG (1)
15- 16 I2 --- SET [1/77] Dataset number
18- 27 F10.4 d t1 1st timepoint in SET (1)
29- 38 F10.4 d tn Last timepoint in SET (1)
40- 49 F10.4 d tau Mean epoch of SET τ (1)
51 I1 --- IND [0/1] Independency of SET: 1=independent
53- 54 I2 --- n [12/47] Number of observations in SET
56- 62 F7.4 mag my [-1.11/-1.08] Mean of observations in SET
64- 70 F7.4 mag s_my [0.004/0.013] Stdev of observations in SET
72 I1 --- K [0/2] Light curve modelling order
74- 80 F7.4 mag se [0.001/0.012] Stdev of residuals
82- 89 F8.4 d TC [-2/130]?=-1 Timescale of change TC (2)
91- 97 F7.4 mag M [-1.11/-1.07] Light curve mean
99-105 F7.4 mag e_M [0.0005/0.0041] Error of M
107 I1 --- q_M [0/1] Reliability of M (1=unreliable)
109-115 F7.4 d P [5.63/10.01]?=-1 Period of light curve
117-123 F7.4 d e_P [0.02/1.6]?=-1 Error of P
125 I1 --- q_P [0/1] Reliability of P (1=unreliable)
127-133 F7.4 mag A [0.008/0.052]?=-1 Light curve amplitude
135-141 F7.4 mag e_A [0.001/0.013]?=-1 Error od A
143 I1 --- q_A [0/1] Reliability of A (1=unreliable)
145-154 F10.4 d tmin1 ?=-1 Epoch of the primary minimum (1)
156-162 F7.4 d e_tmin1 ?=-1 Error of tmin1
164 I1 --- q_tmin1 [0/1] Reliability of tmin1 (1=unreliable)
166-175 F10.4 d tmin2 ?=-1 Epoch of the secondary minimum (1)
177-183 F7.4 d e_tmin2 ?=-1 Error of tmin2
185 I1 --- q_tmin2 [0/1] Reliability of tmin2 (1=unreliable)
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Note (1): All timepoints are Heliocentric Julian Dates given in format
HJD-2400000.
Note (2): The special value TC=-2 indicates that the computation process
hits the end of the segment.
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Acknowledgements:
Lauri Jetsu, lauri.jetsu(at)helsinki.fi
(End) Patricia Vannier [CDS] 06-May-2015