J/A+A/558/A96 CSS21055 light curves (Beuermann+, 2013)
The eclipsing post-common envelope binary CSS21055: a white dwarf with a
probable brown-dwarf companion.
Beuermann K., Dreizler S., Hessman F.V., Backhaus U., Boesch A.,
Husser T.-O., Nortmann L., Schmelev A., Springer R.
<Astron. Astrophys. 558, A96 (2013)>
=2013A&A...558A..96B 2013A&A...558A..96B
ADC_Keywords: Binaries, eclipsing ; Stars, white dwarf ; Photometry
Keywords: binaries: close - binaries: eclipsing - white dwarfs - brown dwarfs -
stars: individual: CSS21055 - stars: individual: SDSS J141126+200911
Abstract:
We report photometric observations of the eclipsing close binary
CSS21055 (SDSS J141126+200911) that strongly suggest that the
companion to the carbon-oxygen white dwarf is a brown dwarf with a
mass between 0.030 and 0.074M_☉. The measured orbital period is
121.73-min and the totality of the eclipse lasts 125s. If
confirmed, CSS21055 would be the first detached eclipsing WD+BD
binary. Spectroscopy in the eclipse could provide information about
the companion's evolutionary state and atmospheric structure.
Description:
Tables contain the numerical values for the light curves presented in
Figs. 1a, 1b, and 1c.
Objects:
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RA (2000) DE Designation(s)
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14 11 26.20 +20 09 11.1 CSS21055 = SDSS J141126.20+200911.1
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
fig1a.dat 40 741 Numerical values for the light curve plotted in
Fig. 1a based on twelve white-light eclipse light
curves taken between 5 March and 26 June 2012
fig1b.dat 34 203 Numerical values for the light curve plotted in
Fig. 1b based on the white-light runs with 20s
exposures performed on 5 March and 26 June 2012
fig1c.dat 43 50 Numerical values for the binned I-band light curve
plotted in Fig. 1c.
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Byte-by-byte Description of file: fig1a.dat fig1b.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- Seq Sequential number
6- 14 F9.6 --- Phase [-0.5/0.5] Orbital phase of bin center based
on Eq. (1) of the paper
16- 24 F9.6 --- rFlux [-0.05/1.05] Flux normalized to unity in
phase intervals 0.03<abs(phase)<0.10
27- 34 F8.6 --- e_rFlux Statistical error derived from CCD photometry
in individual images
37- 40 F4.1 s TExp ? Exposure time of bin (for fig1a.dat only)
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Byte-by-byte Description of file: fig1c.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq Sequential number
6- 7 I2 --- Nf [7/43] Number of original flux values averaged
per phase bin (1)
11- 19 F9.6 --- Phase [-0.5/0.5] Mean phase of points weighted with
the individual flux errors
23- 31 F9.6 --- rFlux [-0.05/1.02] Weighted mean normalized flux
36- 43 F8.6 --- e_rFlux Weighted mean error
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Note (1): Note that the phase bins are not equidistant.
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Acknowledgements:
Klaus Beuermann, k.beuermann(at)t-online.de
(End) Patricia Vannier [CDS] 23-Sep-2013