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J/PASP/108/332 Photometric analysis of contact binaries (Lapasset+ 1996)
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Photometric analyses of the short-period contact binaries HY Pavonis,
AW Virginis, and BP Velorum
Lapasset E., Gomez M., Farinas R.
<Publ. Astron. Soc. Pac. 108, 332 (1996)>
=1996PASP..108..332L
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ADC_Keywords: Binaries, eclipsing ; Photometry
Abstract:
We present BV light-curve synthetic analyses of three short-period
contact (W UMa) binaries: HY Pavonis (P=~0.35days), AW Virginis
(P=~0.35days), and BP Velorum (P=~0.26days). Different possible
configurations for wide range of the mass ratio were explored in each
case making use of the Wilson-Devinney code. The photometric
parameters of the systems were determined from the synthetic
light-curve solutions that best fit the observations. AW Vir has two
components of very similar temperatures and therefore the subtype
(A or W) remains undetermined. HY Pav and BP Vel are best modeled by
W-type configurations and the asymmetries in the light curves are
reproduced by introducing cool spots on the more massive secondary
components. Although BP Vel lies in the region of the open cluster
Cr 173, its distance modulus, in principle, rules it out as a
cluster member.
Objects:
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RA (2000) DE Designation(s)
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20 23 47 -73 42.2 HY Pav
13 27 32 +03 02.5 AW Vir
08 18 07 -45 23.5 BP Vel
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1a.dat 30 653 Individual observations of HY Pavonis
table1b.dat 30 606 Individual observations of AW Virginis
table1c.dat 30 537 Individual observations of BP Velorum
table3a.dat 20 59 HY Pavonis normal points
table3b.dat 20 61 AW Virginis normal points
table3c.dat 20 67 BP Velorum normal points
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Byte-by-byte Description of file: table1a.dat table1b.dat table1c.dat
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Bytes Format Units Label Explanations
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1- 9 F9.4 d HJD-2440000 HJD of observation (-2440000)
11- 16 F6.4 --- Phase [0/1[ Phase
18- 23 F6.3 mag dV Differential (Var-Comp) V magnitude
25- 30 F6.3 mag dB Differential (Var-Comp) B magnitude
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Byte-by-byte Description of file: table3a.dat table3b.dat table3c.dat
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Bytes Format Units Label Explanations
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1- 6 F6.4 --- Phase [0/1[ Phase
8- 13 F6.4 --- IV Intensity in V
15- 20 F6.4 --- IB Intensity in B
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Origin: AAS CD-ROM series, Volume 6, 1996 Lee Brotzman [ADS] 07-May-1996
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(End) [CDS] 06-Sep-1996