J/other/CoSka/51.78 Flare stars in nearby Galactic open clusters (Maryeva+ 2021)
Flare stars in nearby Galactic open clusters based on TESS data.
Maryeva O., Bicz K., Xia C., Baratella M., Cechvala P., Vida K.
<Contr. Astron. Obs. Skalnate Pleso, 51, 78-97 (2021)>
=2021CoSka..51...78M 2021CoSka..51...78M (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, open ; Stars, flare
Keywords: Galaxy: open clusters and associations: general - stars: flare -
stars: activity - space mission: TESS
Abstract:
The study is devoted to search for flare stars among confirmed members
of Galactic open clusters using high-cadence photometry from TESS
mission. We analyzed 957 high-cadence light curves of members from 136
open clusters. As a result, 56 flare stars were found, among them 8
hot B-A type objects. Of all flares, 63 % were detected in sample of
cool stars (Teff<5000K), and 2 % - in stars of spectral type G,
while 23% in K-type stars and approximately 34% of all detected
flares are in M-type stars. Using the FLATW'RM (FLAre deTection With
Ransac Method) flare finding algorithm, we estimated parameters of
flares and rotation period of detected flare stars. The flare with the
largest amplitude appears on the M3 type EQ Cha star. Statistical
analysis did not reveal any direct correlation between ages, rotation
periods and flaring activity.
Description:
List of selected flare stars, members of nearby Galactic open clusters
(clusters located within 2 kpc). Spectral types are taken from the
SIMBAD database. Teff is temperature taken from Gaia DR2 (Gaia
Collaboration et al., 2016A&A...595A...1G 2016A&A...595A...1G, Cat. I/337,
2018A&A...616A...1G 2018A&A...616A...1G. I/345). Numbers of flares and rotation periods
are estimated as described in Section 2.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 106 56 List of are stars selected in this work
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See also:
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- Cluster Name of parent cluster
13- 31 I19 --- GaiaDR2 Gaia DR2 ID
33- 43 A11 --- Name SIMBAD name
46- 65 F20.16 deg RAdeg Right ascension (J2000)
67- 86 F20.16 deg DEdeg Declination (J2000)
88- 92 A5 --- SpType Spectral types are taken from the SIMBAD
database
94- 97 I4 K Teff ? Effective temperature taken from Gaia DR2
(Gaia Collaboration, 2018, Cat. I/345)
99-100 I2 --- NFl Number of flares
102-106 F5.2 d Prot ? Rotation Period
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Acknowledgements:
Olga Maryeva, olga.maryeva(at)gmail.com
(End) Patricia Vannier [CDS] 19-Mar-2021