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J/A+A/383/197     BV light curves of V511 Lyr in 1994-1996     (Lyytinen+, 2002)

Time series analysis of V511 Lyrae photometry. Lyytinen J., Johansson P.,L.Jetsu, Esko E., Hackman T., Hall D.S., Henry G.W., Kontinen S., Koenoenen P., Maisala S., Palviainen A., Ryynaenen K. <Astron. Astrophys. 383, 197 (2002)> =2002A&A...383..197L
ADC_Keywords: Stars, variable ; Stars, double and multiple ; Photometry, UBV Keywords: stars: individual: V511 Lyr (HDE 337518) - stars: variable: general - stars: activity - techniques: photometric Abstract: Our time series analysis of sixteen BV light curves of the chromospherically active binary V511 Lyr confirmed the 2.7days rotation period uniquely. The seasonal periodicity changes of 3.8% indicated the presence of detectable surface differential rotation. The significant 2.67455days periodicity in the light curve minimum epochs suggested that the strongest starspot formation in V511 Lyr was concentrated on one stable active longitude. The differential BV photometry of V511 Lyr was made between May 1994 and June 1996 with the Vanderbilt-Tennessee State 0.4m Automated Photoelectric Telescope (APT). The comparison and check stars were HDE 337663 (C1) and HD 179422 (C2). Objects: ----------------------------------------- RA (2000) DE Designation(s) ----------------------------------------- 19 06 21.3 +27 42 48 V511 Lyr 19 10 30.0 +27 38 18 HDE 337663 19 11 31.0 +26 44 09 HD 179422 ----------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 29 259 Individual Johnson B and V differential magnitudes
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 2 I2 --- Set Subset number from Table 1 (1) 4- 15 F12.4 d HJD Heliocentric Julian Date for each observation. 17- 22 F6.3 mag Bmag ?=99.999 Johnson B differential magnitude, in the sense variable minus comparison star (2) 24- 29 F6.3 mag Vmag ?=99.999 Johnson V differential magnitude, in the sense variable minus comparison star (2)
Note (1): Sets 1 - 17 were all acquired with the T3 0.40m APT at Fairborn Observatory. Note (2): A "99.999" in column 3 or 4 indicates the observation had a large internal error and has been replaced with this dummy value.
History: Copied at
(End) Patricia Bauer [CDS] 12-Feb-2002
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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