J/MNRAS/428/1442 TV Boo V light curve (Skarka+, 2013)
Photometric study of the star with changing Blazhko effect: TV Bootis.
Skarka M., Zejda M.
<Mon. Not. R. Astron. Soc., 428, 1442-1448 (2013)>
=2013MNRAS.428.1442S 2013MNRAS.428.1442S
ADC_Keywords: Stars, variable ; Photometry
Keywords: stars: horizontal branch - stars: individual: TV Boo -
stars: variables: RR Lyrae
Abstract:
This study investigates periodic modulation of the light curve of the
RRc star TV Boo and its physical parameters based on photometric data.
This phenomenon, known as the Blazhko effect, is quite rare among RRc
stars. The frequency analysis based on the data gathered at the
Masaryk University Observatory (MUO) and also using SuperWASP data
revealed symmetrically structured peaks around the main pulsation
frequency and its harmonics, which indicate two modulation components
of the Blazhko period. The main modulation periodicity was found to be
9.7374±0.0054d. This is one of the shortest known Blazhko periods
among RRc stars. The second modulation period (21.5±0.2d) causes
changes of the Blazhko effect itself. Some indices show that TV Boo
could be affected by long-term changes of the order of years. Basic
physical parameters were estimated via an MUO V light-curve
solution using Fourier parameters. TV Boo seems to be a
low-metallicity star with [Fe/H]=-1.89.
Description:
TV Bootis was observed on 23 nights during three seasons from 2009 to
2011 with the 60cm Newtonian telescope of the Masaryk University
Observatory (MUO) in Brno, Czech Republic.
We find HJDTmax=2454922.2334(2)+0.3125615(7)Epuls and
HJDTmaxBlazhko=2454950.80(10)+9.7374(54)EBlazhko.
Objects:
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RA (2000) DE Designation(s)
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14 16 36.58 +42 21 35.7 TV Boo = V* TV Boo
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 18 2660 Masaryk University Observatory (MUP) V data
from seasons 2009-2011
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See also:
J/A+A/549/A101 : Known Galactic field Blazhko stars (Skarka, 2013)
J/MNRAS/411/1585 : CZ Lac multiperiodic Blazhko modulation (Sodor+, 2011)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 11 F11.3 d HJD Helicentric Julian date
13- 18 F6.3 mag Vmag MUO V magnitude
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 20-Jan-2014