J/AJ/133/255 Light-curve and radial velocities of BD+42 2782 (Lu+, 2007)
Light-curve and radial velocity study of the contact binary BD +42 2782.
Lu W., Hrivnak B.J., Rush B.W.
<Astron. J., 133, 255-260 (2007)>
=2007AJ....133..255L 2007AJ....133..255L
ADC_Keywords: Binaries, eclipsing ; Photometry, RI ; Photometry, Cousins ;
Radial velocities
Keywords: binaries: eclipsing - stars: individual (BD +42 2782)
Abstract:
BD+42 2782 was recently discovered to be a variable star with a
W UMa-type, eclipsing-binary light curve. We have obtained the first
photoelectric light curves (RC, IC) and also the first radial velocity
curves for this binary.
Description:
Photoelectric observations of BD+42 2782 were made with the 0.4m,
f/12 Cassegrain telescope at the Valparaiso University Observatory.
Observations were carried out in two intervals, 2004 June 5-14 (four
nights) and 2004 September 7 to November 7 (eight nights).
Objects:
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RA (2000) DE Designation(s)
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17 01 22 +42 09.8 BD+42 2782 = TYC 3080-1410-1
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 39 453 Differential magnitudes for BD+42 2782 from 2004
table3.dat 33 18 Radial velocities for both components of BD+42 2782
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See also:
J/AJ/132/960 : V(RI)c light-curves of EQ Tauri (Hrivnak+, 2006)
J/A+A/311/523 : Photometry of W UMa (Maceroni+, 1996)
J/A+A/417/745 : V(RI)C differential photometry of V861 Her (Csizmadia+, 2004)
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 HJDRc Heliocentric Julian Date
14- 19 F6.3 mag DRcmag Differential Magnitude in Rc
21- 32 F12.4 d HJDIc ? Heliocentric Julian Date
34- 39 F6.3 mag DIcmag ? Differential Magnitude in Ic
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 12 F12.4 d HJD Heliocentric Julian Date
14- 19 F6.4 --- Phase Phase
21- 26 F6.1 km/s Vp ? Radial velocity of primary component
28- 33 F6.1 km/s Vs ? Radial velocity of secondary component
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 11-Dec-2008