J/A+A/415/283 BV light curves of NN Vir (Djurasevic+, 2004)
A Photometric Study of NN Virginis.
Djurasevic G., Albayrak B., Tanriverdi T., Erkapic S.
<Astron. Astrophys. 415, 283 (2004)>
=2004A&A...415..283D 2004A&A...415..283D
ADC_Keywords: Binaries, eclipsing ; Photometry, UBV
Keywords: binaries: eclipsing - binaries: close - individual: NN Vir
Abstract:
Photoelectric BV light curves of the recently discovered eclipsing
binary NN Vir were studied for the first time to derive the physical
parameters of the system. The light curves were obtained at the Ankara
University Observatory during three nights in May, 2002. The solutions
made by using Djurasevic's inverse problem method describe the NN Vir
system as a high overcontact configuration (fover∼58%) with a
relatively small temperature differences between the components
(ΔT=Th-Tc∼160K). These solutions suggest a significant mass
and energy transfer from the more massive primary onto the less
massive secondary. The hot area on the less massive star, near the
neck region, can be taken as a consequence of this mass and energy
exchange between the components through the connecting neck of the
common envelope.
Objects:
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RA (2000) DE Designation(s)
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14 19 37.7 +05 53 47 NN Vir
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
observ.dat 31 217 Observational data for NN Vir
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Byte-by-byte Description of file: observ.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- 25 F5.3 mag Bmag B magnitude
27- 31 F5.3 mag Vmag V magnitude
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Acknowledgements:
(End) Patricia Bauer [CDS] 13-Nov-2003