Magnetic variability in the young solar analog KIC 10644253 - Observations from the Kepler satellite and the HERMES spectrograph

@article{Salabert2016MagneticVI,
  title={Magnetic variability in the young solar analog KIC 10644253 - Observations from the Kepler satellite and the HERMES spectrograph},
  author={David Salabert and Clara R{\'e}gulo and R. A. Garc{\'i}a and Paul G. Beck and J{\'e}r{\^o}me Ballot and Orlagh L. Creevey and Fernando P{\'e}rez Hern{\'a}ndez and Jos'e Dias do Nascimento and Enrico Corsaro and Ricky Egeland and Savita Mathur and Travis S. Metcalfe and Lionel Bigot and T. Cellier and Pere L. Pall{\'e}},
  journal={Astronomy and Astrophysics},
  year={2016},
  volume={589}
}
The continuous photometric observations collected by the Kepler satellite over 4 yr provide a wealth of data with an unequalled quantity and quality for the study of stellar evolution of more than 200 000 stars. Moreover, the length of the dataset provides a unique source of information for detecting magnetic activity and associated temporal variability in the acoustic oscillations. In this regards, the Kepler mission was awaited with great expectations. The search for the signature of magnetic… 

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References

SHOWING 1-10 OF 91 REFERENCES

The HERMES solar atlas and the spectroscopic analysis of the seismic solar analogue KIC 3241581

Context. Solar-analogue stars provide an excellent resource to study the Sun’s evolution, i.e. the changes with time in stellar structure, activity, or rotation for solar-like stars. The unparalleled

The Activity and Variability of the Sun and Sun-like Stars. I. Synoptic Ca II H and K Observations

Synoptic measurements of activity in Sun-like stars have been performed continuously since 1966, and the largest set comes from the Mount Wilson HK project, in the form of the well-known S index. We

Rotation and magnetism of Kepler pulsating solar-like stars : Towards asteroseismically calibrated age-rotation relations

Kepler ultra-high precision photometry of long and continuous observations provides a unique dataset in which surface rotation and variability can be studied for thousands of stars. Because many of

Impact on asteroseismic analyses of regular gaps in Kepler data

The NASA Kepler mission has observed more than 190,000 stars in the constellations of Cygnus and Lyra. Around 4 years of almost continuous ultra high-precision photometry have been obtained reaching

Spectral analysis of Kepler SPB and β Cephei candidate stars

Context. For asteroseismic modelling, analysis of the high-accuracy light curves delivered by the Kepler satellite mission needs support by ground-based, multi-colour and spectroscopic observations.

PROPERTIES OF 42 SOLAR-TYPE KEPLER TARGETS FROM THE ASTEROSEISMIC MODELING PORTAL

Recently the number of main-sequence and subgiant stars exhibiting solar-like oscillations that are resolved into individual mode frequencies has increased dramatically. While only a few such data

Asteroseismic stellar activity relations

In asteroseismology an important diagnostic of the evolutionary status of a star is the small frequency separation which is sensitive to the gradient of the mean molecular weight in the stellar

Spectrum analysis of bright Kepler γ Doradus candidate stars

Ground-based spectroscopic follow-up observations of the pulsating stars observed by the Kepler satellite mission are needed for their asteroseismic modelling. We aim to derive the fundamental

Magnetic activity and differential rotation in the young Sun-like stars KIC 7985370 and KIC 7765135

Aims. We present a detailed study of the two Sun-like stars KIC 7985370 and KIC 7765135, to determine their activity level, spot distribution, and differential rotation. Both stars were previously

Magnetic activity and differential rotation in the very young star KIC 8429280

Aims. We present a spectroscopic and photometric analysis of the rapid rotator KIC 8429280, discovered by ourselves as a very young star and observed by the NASA Kepler mission, designed to determine
...