6 papers
Photometric Modulations on Intermediate Timescales in the Symbiotic Binaries
Melis Yardımcı, Samet Ok, Belinda Kalomeni
We present a multi-band study of three symbiotic binaries using combined ground- and space-based monitoring that spans up to 14 years. These datasets enable a systematic investigat…
A Binary-Based Reassessment of the Age and Stellar Properties of NGC 7789 Using Twelve Binary Components
Kadri Yakut, Belinda Kalomeni, Saul Rappaport
We present a binary-based reassessment of the age of the intermediate-age open cluster NGC 7789, together with well-constrained stellar parameters for twelve components in six SB2…
A Deep Look into the Intermediate-Age Open Cluster NGC 2506: What Binary Systems Reveal About Cluster Distance and Age
K. Yakut, B. Kalomeni, S. Rappaport +1
Using high-precision observations from the space-based \textit{Gaia} and \textit{TESS} missions, complemented by ground-based spectroscopic data and multi-band photometric surveys,…
A novel approach to determining the age of stellar clusters: application to NGC 188
K. Yakut, B. Kalomeni, S. Rappaport
We present a new independent determination for the age of one of the oldest open clusters, NGC 188: Gyr. We utilize a novel approach where we jointly fit the radial…
Comprehensive analysis of CM Draconis: eclipse timing variations driven by either a third body or stellar magnetic activity
B. Kalomeni, K. Yakut
The CM Draconis system is a well-studied, double-lined spectroscopic binary that is totally eclipsing and exhibits strong magnetic activity. Nearly one million photometric measurem…
X-ray and Optical Analysis of the Prototype Polar AN UMa
S. Ok, M. Yardimci, B. Kalomeni +1
We present a long-term optical and X-ray photometric study of AN UMa, one of the prototypical polar-type cataclysmic variables, tracing more than 34 years of its accretion history.…