J/ApJS/232/26 Catalog of Kepler flare stars (Van Doorsselaere+, 2017)
Stellar flares observed in long-cadence data from the Kepler mission.
Van Doorsselaere T., Shariati H., Debosscher J.
<Astrophys. J. Suppl. Ser., 232, 26-26 (2017)>
=2017ApJS..232...26V 2017ApJS..232...26V (SIMBAD/NED BibCode)
ADC_Keywords: Stars, variable ; Effective temperatures ; Stars, diameters
Keywords: stars: activity - stars: coronae - stars: flare
Abstract:
We aim to perform a statistical study of stellar flares observed by
Kepler. We want to study the flare amplitude, duration, energy, and
occurrence rates, and how they are related to the spectral type and
rotation period. To that end, we have developed an automated flare
detection and characterization algorithm. We have harvested the
stellar parameters from the Kepler input catalog and the rotation
periods from McQuillan et al. (2014, Cat. J/ApJS/211/24). We find
several new candidate A stars showing flaring activity. Moreover, we
find 653 giants with flares. From the statistical distribution of
flare properties, we find that the flare amplitude distribution has a
similar behavior between F+G types and K+M types. The flare duration
and flare energy seem to be grouped between G+K+M types versus F types
and giants. We also detect a tail of stars with high flare occurrence
rates across all spectral types (but most prominent in the late
spectral types), and this is compatible with the existence of "flare
stars." Finally, we have found a strong correlation of the flare
occurrence rate and the flare amplitude with the stellar rotation
period: a quickly rotating star is more likely to flare often and has
a higher chance of generating large flares.
Description:
With an automated detection method, we have identified stellar flares
in the long cadence observations of Kepler during quarter 15. We list
each flare time for the respective Kepler objects. Furthermore, we
list the flare amplitude and decay time after fitting the flare light
curve with an exponential decay.
Flare start times in long cadence data of Kepler during quarter 15.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 68 16850 Catalog of Kepler flare stars for 6662 stars
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See also:
V/133 : Kepler Input Catalog (Kepler Mission Team, 2009)
J/ApJS/211/24 : Rotation periods of Kepler MS stars (McQuillan+, 2014)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 8 I8 --- KIC Kepler Input Catalog identifier
10- 20 F11.6 d Date Kepler mission time of flare, BJD-2454833
22- 35 F14.6 --- a Amplitude in flux units
37- 46 F10.6 d-1 k Flare decay
48- 54 F7.1 K Teff Effective temperature
56- 62 F7.3 Rsun Radius Radius
64- 68 F5.3 [cm/s2] logg log surface gravity
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Acknowledgements:
Tom Van Doorsselaere, tom.vandoorsselaere(at)kuleuven.be
(End) Tom Van Doorsselaere [CmPA, Leuven], Patricia Vannier [CDS] 08-Nov-2017