J/A+A/361/1005 S10947 Aql photometry (Richter+, 2000)
S10947 Aql = RX J2009.8+1557:
A probable RS CVn star which sometimes stops its eclipses
Richter G.A., Greiner J.
<Astron. Astrophys. 361, 1005 (2000)>
=2000A&A...361.1005R 2000A&A...361.1005R
ADC_Keywords: Stars, variable ; X-ray sources ; Magnitudes, photographic
Keywords: stars: binaries: close - stars: circumstellar matter -
stars: individual: S10947 Aql - X-rays: stars
Description:
In the paper we report the discovery of a new variable star, called
S10947 Aql, as the likely optical counterpart of RX J2009.8+1557. The
optical variability pattern as well as the detected X-ray emission
suggest that it is a chromospherically active binary of the RS Canum
Venaticorum type. We discovered an occasional disappearance of the
eclipsing minima as well as large variations in the eclipse amplitude.
The present file contains the full set of measurements from the
various types of the 705 photographic plates used in this
investigation (note that the number of 709 given in the paper is wrong).
The table file is sorted according to plate type which is listed in
the first column. Given for each measurement are the Julian Date
(corresponding to the time of mid-exposure) and the photographic
magnitude. Uncertain measurements and/or upper limits are marked
with a flag (4th column).
Objects:
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RA (2000) DE Designation(s)
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20 09 51.43 +15 57 34.2 S10947 Aql
20 09 51.9 +15 57 35 RX J2009.8+1557
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 23 705 Photographic measurements of S10947 Aql
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1 A1 --- Plate [ADFG] Plate type
3- 13 F11.3 d HJD Heliocentric Julian Date
15 A1 --- l_mpg Limit flag on mpg
16- 20 F5.2 mag mpg Photographic magnitude
21- 22 A2 --- u_mpg [: ] Uncertainty flag on mpg (1)
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Note (1): The symbols have the following meanings:
: uncertain
:: very uncertain
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Acknowledgements: Jochen Greiner
(End) Patricia Bauer [CDS] 18-Sep-2000