J/AJ/135/1958 KZ Hya times of maximum light (Fu+, 2008)
Detection of a degenerate companion of the SX Phoenicis star KZ Hydrae by
studying its long-term variability.
Fu J.N., Khokhuntod P., Rodriguez E., Boonyarak C., Marak K.,
Lopez-Gonzalez M.J., Zhu L.Y., Qian S.B., Jiang S.Y.
<Astron. J., 135, 1958-1967 (2008)>
=2008AJ....135.1958F 2008AJ....135.1958F
ADC_Keywords: Stars, variable ; Photometry
Keywords: stars: individual (KZ Hya) - stars: variables: other -
techniques: photometric
Abstract:
We present 109 new times of maximum light of the SX Phoenicis (SX Phe)
star KZ Hydrae (KZ Hya) based mainly on our extensive photometric
observations for two decades, leading to determination of a general
ephemeris combined with the data in the literature.
Description:
In total, more than 135h of data were collected on 54 nights at five
observatories with either photometers or CCD cameras for KZ Hya from
1988 to 2007.
Objects:
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RA (2000) DE Designation(s)
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10 50 54.1 -25 21 15 KZ Hya = HD 94033
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table7.dat 45 271 Times of maximum light, O-C and residuals for KZ Hya
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Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Num Observation number (1)
5- 14 F10.4 d Tmax Heliocentric Julian Date of maximum minus 2400000
16- 21 I6 --- E Cycle number
23- 30 F8.5 d O-C The O-C value
32- 39 F8.5 d Res Binary system fit residual
41- 43 F3.1 --- WT Weight
45 I1 --- Source Data source (2)
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Note (1): Note that for number 96 the Tmax follows Liu et al.
(1991IBVS.3606....1L 1991IBVS.3606....1L). It is incorrect in Table II of Doncel et al.
(2004, Ap&SS, 290, 399). Also for numbers 131-134 and 136-143 the
Tmax values are 0.5 day less than the values listed in Table II of
Doncel et al. (2004, ibid.)
Note (2): References as follows:
1 = Doncel et al. (2004, Ap&SS, 290, 399)
2 = Bonnardeau (2005, MBCAA Obs., http://mbond.free.fr/KZHya/KZHyalc.htm)
3 = Bonnardeau (2006, MBCAA Obs., http://mbond.free.fr/KZHyaA5/KZHyaA5.htm)
4 = Bonnardeau (2007, http://mbond.free.fr/KZHyaA7/KZHyaA7.htm)
5 = Table 5 of present paper
6 = Table 6 of present paper
7 = Kim et al. (2007, Ap&SS, 312, 41)
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 04-Jan-2011