J/other/JAD/18.2 CY Aqr multiband photometry: 2011 season (Sterken+, 2012)
New times of maximum of CY Aquarii.
Sterken C., Wiedemair C., Munaro T., Rigo J., Durnwalder J., Kirchler A.,
Damini Hofer J., Schraffl F., Olsen E. H., Tuvikene T.
<J. Astron. Data, 18, 2 (2012)>
=2012JAD....18....2S 2012JAD....18....2S
ADC_Keywords: Stars, variable ; Photometry, uvby ; Photometry, CCD
Keywords: technique: photometric -- stars: individual: CY Aqr
Abstract:
Based on more than a dozen partial nights of filterless CCD photometry
combined with Stromgren uvby photomultiplier photometry, we derive 29
new times of maximum light of the SX Phoenicis star CY Aquarii. These
times support a linear ephemeris for 2003-2011. In addition, we
present uvby light curves for this star. Our dataset displays the
smallest residual spread compared to any other substantial dataset
published during the last decade.
Description:
The differential magnitudes of V* CY Aqr are presented in rgb2011.dat
and sat.2011.dat. The times of maximum light of V* CY Aqr are given in
tmax2011.dat.
Objects:
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RA (2000) DE Designation(s)
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22 37 47.9 +01 32 04 V* CY Aqr = HIP 111719
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
rgb2011.dat 29 3467 RGB filterless photometry for V* CY Aqr
sat2011.dat 40 193 SAT uvby photometry for V* CY Aqr
tmax2011.dat 27 29 Times of maximum of V* CY Aqr (RGB + SAT)
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Byte-by-byte Description of file: rgb2011.dat
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Bytes Format Units Label Explanations
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1- 13 F13.5 d HJD Heliocentric Julian Date
15- 21 F7.4 mag dmag Differential magnitude, CY Aqr - C1
23- 29 F7.4 mag dmagc Differential magnitude comparison stars, C1 - C2
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Byte-by-byte Description of file: sat2011.dat
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Bytes Format Units Label Explanations
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1- 14 F14.6 d HJD Heliocentric Julian Date
16- 21 F6.3 mag dymag Differential y magnitude, CY Aqr - C1
23- 28 F6.3 mag db-y Differential b-y color index, CY Aqr - C1
30- 34 F5.3 mag dm1 Differential m1 color index, CY Aqr - C1
36- 40 F5.3 mag dc1 Differential c1 color index, CY Aqr - C1
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Byte-by-byte Description of file: tmax2011.dat
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Bytes Format Units Label Explanations
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1- 12 F12.4 d HJD Heliocentric Julian Date
14 I1 --- W [1,5]? Weight (1)
16- 21 I6 --- E Cycle number
23 A1 --- Band Passband (2)
25- 27 A3 --- Source Source of the time of maximum (3)
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Note (1): Weights as follows:
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Weight Data density Shape of maximum Comment
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1 = very low (ir)regular
2 = medium + irregular
3 = high + irregular deviations from smoothness
4 = medium + regular
5 = high + regular smooth light curve
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Note (2): A blank value means filterless photometry.
Note (3): Time of maximum from:
RGB = Section 2.1 (filterless CCD photometry),
SAT = Section 2.2 (average of uvb and y band maxima).
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Acknowledgements:
Chris Sterken, csterken(at)vub.ac.be
(End) Patricia Vannier [CDS] 29-Feb-2012