59 citations · 95 across the 4 of their papers we have counts for
6 papers · 1 filter
Predictions of Astrometric Jitter for Sun-like Stars. II. Dependence on Inclination, Metallicity, and Active-Region Nesting
K. Sowmya, N. -E. Nèmec, A. I. Shapiro +5
Ultra-precise astrometry from the Gaia mission is expected to lead to astrometric detections of more than 20,000 exoplanets in our Galaxy. One of the factors that could hamper such…
Where have all the solar-like stars gone? Rotation period detectability at various inclinations and metallicities
Timo Reinhold, Alexander I. Shapiro, Veronika Witzke +3
The plethora of photometric data collected by the Kepler space telescope has promoted the detection of tens of thousands of stellar rotation periods. However, these periods are not…
Amplification of brightness variability by active-region nesting in solar-like stars
Emre Işık, Alexander I. Shapiro, Sami K. Solanki +1
Kepler observations revealed that hundreds of stars with near-solar fundamental parameters and rotation periods have much stronger and more regular brightness variations than the S…
Activity variation driven by flux emergence and transport on Sun-like stars
Emre Işık, Sami K. Solanki, Natalie A. Krivova +1
In G dwarfs, the surface distribution, coverage and lifetimes of starspots deviate from solar-like patterns as the rotation rate increases. We set up a numerical platform which inc…
Starspot activity and differential rotation in KIC 11560447
Emre Isik, Ibrahim Ozavci, Hakan V. Senavci +4
Using high-precision photometry from the \textit{Kepler} mission, we investigate patterns of spot activity on the K1-type subgiant component of KIC 11560447, a short-period late-ty…
Sunspot group tilt angles from drawings for cycles 19-24
Emre Isik, Seda Isik, Bahar B. Kabasakal
The tilt angle of a sunspot group is a critical quantity in the surface transport of magnetic flux and the solar dynamo. To contribute long-term databases of the tilt angle, we dev…