J/other/JAD/22.1 CCD photometry of CY Aqr 2012-2015 (Wiedemair+, 2016)
CCD photometry of CY Aquarii. IV. The 2012-2015 seasons.
Wiedemair C., Sterken C., Eenmae T., Tuvikene T., Niederkofler D.,
Franzinelli P., Durnwalder J., Nardi R., Franzinelli T., Morawetz I.,
Nugroho S.K., Damini Hofer J., Seeber J.
<J. Astron. Data, 22, 1 (2016)>
=2016JAD....22....1W 2016JAD....22....1W (SIMBAD/NED BibCode)
ADC_Keywords: Stars, variable ; Photometry, CCD
Keywords: technique: photometric - stars: individual: CY Aqr -
variable stars: SX Phoenicis stars - variable stars: period change
Abstract:
Based on more than 50 partial nights of CCD monitoring, we derive 118
new times of maximum light of the SX Phoenicis star CY Aquarii. These
times support a linear ephemeris for 2013-2015.
Description:
All photometric data reported in this paper were obtained through CCD
imaging obtained over more than 50 partial nights comprising a total
of more than 20000 useful CCD frames. Table 1 gives the journal of
observations.
Heliocentric Julian Date, differential magnitudes ys,bs,vs,us
in the standard system, and instrumental differential magnitudes
yi,bi,vi,ui.
Objects:
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RA (2000) DE Designation(s)
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22 37 47.85 +01 32 03.8 V* CY Aqr = BD+00 4900
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 51 60 Journal of observations
table5.dat 41 118 Times of maximum light of CY Aqr, weight W and
cycle number E (tmax2012-15.dat)
listlc.dat 45 10 List of light curves files
lc/* . 10 Individual light curves
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 8 F8.2 d JDstart Star time (JD-2400000)
10 A1 --- --- [-]
12- 19 F8.2 d JDend End time (JD-2400000)
21- 23 I3 --- N Number of CCD frames
25- 30 F6.3 mag C1-C2 Average differential magnitude between
comparison stars (1)
32- 36 F5.3 mag sigma Standard deviation for each nightly sequence
38 A1 --- Band [VLR-] Photometric filter band
40- 51 A12 --- Site Observing site and year
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Note (1): Table 2: Differential magnitudes of the comparison stars and mean
error of the averages.
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Site Band N C1-C2
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Bruneck - 16901 -1.043±0.002
Tartu V 2764 -1.020±0.001
Tartu R 540 -1.056±0.001
iT SSO L 329 -1.047±0.002
Bosscha V 377 -1.018±0.005
iT USA V 60 -1.008
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 10 F10.4 d HJD Heliocentric Julian Date (HJD-2400000)
14 I1 --- W weight
18- 23 I6 --- E Cycle number
26 A1 --- Band [LRV-] Photometric filter band
30- 41 A12 --- Site Observing site and year
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Byte-by-byte Description of file: listlc.dat
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Bytes Format Units Label Explanations
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1- 4 I4 yr Year Year of observation
6 A1 --- Band [LRV-] Photometric filter band
8- 11 I4 --- Nobs Number of observations
13- 24 A12 --- Site Observing site and year
26- 45 A20 --- FileName Name of the file in subdirectory lc
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Byte-by-byte Description of file: lc/*
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Bytes Format Units Label Explanations
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1- 11 F11.5 d HJD Heliocentric Julian Date (HJD-2400000)
13- 18 F6.3 mag CY-C1 Differential magnitude CY Aqr minus C1
20- 25 F6.3 mag C1-C2 Differential magnitude C1 minus C2
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Acknowledgements:
Christiaan Sterken, csterken(at)vub.ac.be
(End) Patricia Vannier [CDS] 18-Oct-2016