J/A+A/558/A63 RX J2117.1+3412 (V2027 Cyg) light curves (Chang+, 2013)
Search for p-mode oscillations in RX J2117.1+3412.
Chang H.-K., Shih I.-C., Liu C.-Y., Fan T., Wu Y.-S., Roques F.,
Doressoundiram A., Fernandez A., Christophe B., Dauny F.
<Astron. Astrophys. 558, A63 (2013)>
=2013A&A...558A..63C 2013A&A...558A..63C
ADC_Keywords: Stars, white dwarf ; Photometry
Keywords: stars: individual: RX J2117.1+3412 - stars: oscillations -
white dwarfs
Abstract:
We report the effort to search for white dwarf p-mode oscillations in
RX J2117.1+3412 (V2027 Cyg), a GW Vir star. The data were taken with
Miosotys, a multi-fiber photometer, mounted on the 1.93-m telescope at
Observatoire de Haute-Provence (OHP) with a 20-Hz cadence in May 2010
and June 2012. Two intriguing signatures at 1.2081Hz and 2.5852Hz were
found at 3.8σ and 3.5σ significance levels, respectively.
However, possible atmospheric effects cannot be ruled out. If these
two features are not real, the 3σ upper limit of the relative
amplitude for the possible oscillations in the frequency range from 1
to 10Hz is estimated to be about 6x10-4. This is the first report in
the literature for a p-mode oscillation search of GW Vir stars.
Description:
These tables are the light curves of RX J2117.1+3412 (V2027 Cyg) and a
reference star, taken by Miosotys with the 1.93-m telescope at OHP on
May 24, 2010, and June 17 and 18, 2012.
Objects:
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RA (2000) DE Designation(s)
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21 17 08.28 +34 12 27.5 RX J2117.1+3412 = V* V2027 Cyg
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
0524t.dat 31 148220 V2027 Cyg light curve on May 24, 2010
0524r.dat 31 148220 Reference light curve on May 24, 2010
0617t.dat 31 141200 V2027 Cyg light curve on June 17, 2012
0617r.dat 31 141200 Reference light curve on June 17, 2012
0618t.dat 31 134340 V2027 Cyg light curve on June 18, 2012
0618r.dat 31 134340 Reference light curve on June 18, 2012
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Byte-by-byte Description of file: *.dat
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Bytes Format Units Label Explanations
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2- 16 F15.9 d MJD Modified Julian Date
17- 31 E15.6 ct Int Intensity, CCD recorded readings
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Acknowledgements:
Hsiang-Kuang Chang, hkchang(at)phys.nthu.edu.tw,
National Tsing Hua University, Taiwan
(End) Patricia Vannier [CDS] 16-Aug-2013