J/A+A/497/481 UBV(RI)c time series of V372 Ser (Benko+, 2009)
Five colour photometry of the RRd star V372 Serpentis.
Benko J.M., Barcza S.
<Astron. Astrophys., 497, 481-485 (2009)>
=2009A&A...497..481B 2009A&A...497..481B
ADC_Keywords: Stars, variable ; Photometry, UBVRI
Keywords: stars: variables: RR Lyr - stars: fundamental parameters -
stars: individual: V372 Ser
Abstract:
The first UBV(RI)_C time series photometry of the RRd star V372 Ser is
presented to determine some parameters of the star. In April, May 2007
2812 U, B, V, R_C, I_C frames were obtained at Konkoly and Teide
Observatories, 1508 V observations were collected from the literature.
Fourier fitted light curves have been derived in all bands.
The non-linearly coupled frequencies f_0=(2.121840±.000001)c/day,
f1=(2.851188±.000001)c/d, i.e. periods
P0=0.4712891±.0000002days, P1=0.3507310±.0000001d,
P1/P0=0.7441950, amplitudes A0(V)=0.15399mag,
A1(V)=0.20591mag, and phases have been found. A1/A0=1.319±.008
has been found from averaging the amplitude ratio in the different
bands i.e. the first overtone is the dominant pulsation mode. From the
V observations upper limits are given for secular change of the
Fourier parameters. The period ratio and period put V372 Ser among the
RRd stars of the globular clusters M3 and IC 4499, mass, luminosity,
and metallicity estimates are given.
Description:
Photometric UBV(RI)c Johnson-Cousins time series of the bright double
mode RR Lyrae star V372 Ser are presented.
Objects:
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RA (2000) DE Designation(s)
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15 17 35.0 -01 05 17 V372 Ser = NSVS 13399252
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
phot.dat 33 2812 Johnson UBV and Cousins RI CCD photometric data
of V372 Ser
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Byte-by-byte Description of file: phot.dat
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Bytes Format Units Label Explanations
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1 A1 --- Filt [UBVRI] Filter
3- 14 F12.4 d HJD Heliocentric Julian Date
17- 22 F6.4 --- X Mid airmass
25- 30 F6.3 mag UBVRI Apparent U,B,V,R,I brightness
33 I1 --- Q [0/1] Quality flag (0 = OK, 1 = not used)
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Acknowledgements:
Jozsef Benko, benko(at)szombat.konkoly.hu
(End) Jozsef Benko [Konkoly Obs., Hungary], Patricia Vannier [CDS] 14-May-2009