J/MNRAS/533/1290 Properties of late-type stars in Kelper field (See+, 2024)
The impact of stellar metallicity on rotation and activity evolution in the
Kepler field using gyro-kinematic ages.
See V., Lu Y., Amard L., Roquette J.
<Mon. Not. R. Astron. Soc. 533, 1290-1299 (2024)>
=2024MNRAS.533.1290S 2024MNRAS.533.1290S (SIMBAD/NED BibCode)
ADC_Keywords: Stars, late-type ; Stars, masses ; Stars, ages ;
Abundances, [Fe/H]
Keywords: stars: abundances - stars: activity - stars: evolution -
stars: low-mass - stars: rotation
Abstract:
In recent years, there has been a push to understand how chemical
composition affects the magnetic activity levels of main sequence
low-mass stars. Results indicate that more metal-rich stars are more
magnetically active for a given stellar mass and rotation period. This
metallicity dependence has implications for how the rotation periods
and activity levels of low-mass stars evolve over their lifetimes.
Numerical modelling suggests that at late ages more metal-rich stars
should be rotating more slowly and be more magnetically active. In
this work, we study the rotation and activity evolution of low-mass
stars using a sample of Kepler field stars. We use the gyro-kinematic
age dating technique to estimate ages for our sample and use the
photometric activity index as our proxy for magnetic activity. We find
clear evidence that, at late ages, more metal-rich stars have spun
down to slower rotation in agreement with the theoretical modeling.
However, further investigation is required to definitively determine
whether the magnetic activity evolution occurs in a metallicity
dependent way.
Description:
The properties of 7752 late-type stars in the Kepler field.
Masses, ages and turnover times are derived in this work while
periods, metallicities and photometric activities are compiled from
the literature.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 85 7752 Properties of 7752 late-type stars in the
Kepler field
--------------------------------------------------------------------------------
See also:
V/133 : Kepler Input Catalog (Kepler Mission Team, 2009)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 I8 --- KIC Kepler Input Catalogue
10- 18 F9.5 deg RAdeg Right Ascension (J2000)
20- 28 F9.6 deg DEdeg Declination (J2000)
30- 33 F4.2 Msun Mass Stellar mass
35- 39 F5.2 d Per Rotation period
41- 44 A4 --- r_Per Rotation period reference (1)
46- 50 F5.2 --- [Fe/H] Metallicity
52- 64 A13 --- r_[Fe/H] Metallicity reference (2)
66- 70 F5.2 Gyr Age Stellar age
72- 77 F6.2 d TOTime Convective turnover time
79- 85 F7.1 ppm Sph ? Photometric activity index
--------------------------------------------------------------------------------
Note (1): References for rotation periods as follows:
MQ14 = McQuillan et al., 2014ApJS..211...24M 2014ApJS..211...24M, Cat. J/ApJS/211/24
S19 = Santos et al., 2019ApJS..244...21S 2019ApJS..244...21S, Cat. J/ApJS/244/21
S21 = Santos et al., 2021ApJS..255...17S 2021ApJS..255...17S, Cat. J/ApJS/255/17
Note (2): References for the metallicities as follows:
APOGEEdr17 = Abdurro et al., 2022ApJS..259...35A 2022ApJS..259...35A, Cat. III/286
LAMOSTdr7_MSR = Liu et al., 2020arXiv200507210L 2020arXiv200507210L, Cat. V/156
LAMOSTdr7_LSR = Du et al., 2021RAA....21..202D 2021RAA....21..202D, Cat. V/156
--------------------------------------------------------------------------------
Acknowledgements:
Victor See, victor.see(at)esa.int
(End) Patricia Vannier [CDS] 25-Jul-2024