J/AJ/142/99 BVRI observations of TZ Boo (Christopoulou+, 2011)
First modern photometric investigation of the puzzling W UMa type close binary
system of TZ Bootis.
Christopoulou P.-E., Parageorgiou A., Chrysopoulos I.
<Astron. J., 142, 99 (2011)>
=2011AJ....142...99C 2011AJ....142...99C
ADC_Keywords: Binaries, eclipsing ; Photometry, CCD ; Photometry, UBVRI
Keywords: binaries: close - binaries: eclipsing - stars: individual (TZ Boo)
Abstract:
New CCD photometric BVRI observations of the puzzling W UMa type
binary star, TZ Bootis, are presented from our observations in 2010.
By using the updated version of the Wilson-Devinney code, the first
modern photometric solution is deduced from new photometric
observations and published spectroscopic data.
Description:
New CCD photometric observations were carried out on 2010 April 12,
May 27, and June 7, 10, 11, and 16 with the 35.5cm f/6.3
Schmidt-Cassegrain telescope at the University of Patras Observatory.
The standard Johnson-Cousin-Bessel set of BVRcIc filters was mounted.
Objects:
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RA (2000) DE Designation(s)
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15 08 09.13 +39 58 12.9 TZ Boo = HIP 74061
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 79 455 BVRI observational Data of the eclipsing
binary TZ Boo
table4.dat 69 402 Times of minimum of TZ Boo (1926-2010)
refs.dat 127 107 References
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See also:
J/A+A/355/171 : TZ Boo + Y Sex orbital periods (Qian+, 2000)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 12 F12.4 d HJD-B ? Heliocentric Julian Date of B band observation
14- 19 F6.3 mag Bmag ? Differential Johnson B band magnitude
21- 32 F12.4 d HJD-V ? Heliocentric Julian Date of V band observation
34- 39 F6.3 mag Vmag ? Differential Johnson V band magnitude
41- 52 F12.4 d HJD-R Heliocentric Julian Date of R band observation
54- 59 F6.3 mag Rmag Differential Cousins R band magnitude
61- 72 F12.4 d HJD-I ? Heliocentric Julian Date of I band observation
74- 79 F6.3 mag Imag ? Differential Cousins I band magnitude
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 11 F11.5 d JD Julian Date of minimum (JD-2400000.0)
12 A1 --- f_JD [*] Switched eclipses (1)
14- 17 A4 --- Meth Observation method: ccd, pe (photoelectric) or
viz=visual
19- 20 A2 --- Type1 Minimum type (I or II) from Eq.1 (P=0.2971604d)
22- 29 F8.1 --- E1 Cycle number (E) in Eq.1
31- 37 F7.4 d (O-C)1 The (O-C) residuals from Eq.1
39- 40 A2 --- Type2 Minimum type (I or II) from Eq.2 (parabolic
curve superposed with a sinusoidal oscillation)
42- 49 F8.1 --- E2 Cycle number (E) in Eq.2
51- 57 F7.4 d (O-C)2 The (O-C) residuals from Eq.2
59- 65 F7.4 d (O-C) ? The (O-C) residuals from full terms of Eq.2
67- 69 I3 --- Ref Reference code, in refs.dat file
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Note (1): Corrected the eclipse type by switching between primary and
secondary and vice versa eclipse for these times.
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Ref Reference code
5- 23 A19 --- BibCode BibCode
25- 44 A20 --- Aut Author's name
46-127 A82 --- Com Comments
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 19-Nov-2012