J/A+A/570/A100 BVRc light curves of 5 CoRoT RR Lyrae stars (Szabo+, 2014)
Revisiting CoRoT RR Lyrae stars: detection of period doubling and temporal
variation of additional frequencies.
Szabo R., Benko J. M., Paparo M., Chapellier E., Poretti E., Baglin A.,
Weiss W. W., Kolenberg K., Guggenberger E., Le Borgne J.-F.
<Astron. Astrophys. 570, A100 (2014)>
=2014A&A...570A.100S 2014A&A...570A.100S
ADC_Keywords: Stars, variable ; Photometry
Keywords: stars: variables: RR Lyrae - stars: oscillations - stars: interiors -
techniques: photometric
Abstract:
High-precision, space-based photometric missions like CoRoT and Kepler
have revealed new and surprising phenomena in classical variable
stars. Such discoveries were the period doubling in RR Lyrae stars
and the frequent occurrence of additional periodicities some of which
can be explained by radial overtone modes, but others are discordant
with the radial eigenfrequency spectrum.
We search for signs of period doubling in CoRoT RR Lyrae stars. The
occurrence of this dynamical effect in modulated RR Lyrae stars
might help us to gain more information about the mysterious Blazhko
effect. The temporal variability of the additional frequencies in
representatives of all subtypes of RR Lyrae stars is also
investigated.
Description:
Ground-based BVR_c observations of CoRoT RR Lyrae stars taken with the
Konkoly Observatory 1m RCC telescope.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
stars.dat 83 5 Studied stars (data from table1)
table3.dat 41 824 The observations
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See also:
B/corot : CoRoT observation log Release 13 (CoRoT, 2009-2014)
Byte-by-byte Description of file: stars.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- --- [CoRoT]
7- 15 I9 --- CoRoT CoRoT Identification
17- 18 I2 h RAh Right Ascension (J2000.0)
20- 21 I2 min RAm Right Ascension (J2000.0)
23- 27 F5.2 s RAs Right Ascension (J2000.0)
29 A1 --- DE- Declination sign (J2000.0)
30- 31 I2 deg DEd Declination (J2000.0)
33- 34 I2 arcmin DEm Declination (J2000.0)
36- 40 F5.2 arcsec DEs Declination (J2000.0)
42- 46 F5.2 mag Vmag V magnitude
48- 52 A5 --- Run CoRoT run (LRc01=Long Run toward Center, 2007)
54- 60 A7 --- Type RR Lyrae subtype (Bl = with Blazhko effect)
62- 66 F5.3 mag Af01 [0/0.26] Amplitude of the dominant mode(s)
67 A1 --- n_Af01 [ab] Note: a=blended pulsators,
b=CoRoT target with colors
69- 73 F5.2 d PBl ?=- Blazhko period in case of modulated star
75- 83 F9.7 d Per Pulsation period
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 9 I9 --- CoRoT CoRoT Identification
17- 29 F13.5 d HJD Heliocentric Julian Date
33- 38 F6.3 mag mag Magnitude in Filt
41 A1 --- Filt [BVR] Filter (R is Cousins' Rc)
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Acknowledgements:
Robert Szabo, rszabo(at)konkoly.hu
(End) Patricia Vannier [CDS] 05-Aug-2014