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- Polish Academy of SciencesPL830 papers
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45 papers · 2 filters
The Clusters AgeS Experiment (CASE). Variable stars in the field of the globular cluster NGC 6362
J. Kaluzny, I. B. Thompson, M. Rozyczka +2
The field of the globular cluster NGC 6362 was monitored between 1995 and 2009 in a search for variable stars. BV light curves were obtained for 69 periodic variables including 34…
Intriguing triple-mode RR Lyrae star with period doubling
R. Smolec, I. Soszyński, A. Udalski +11
We report the discovery of an intriguing triple-mode RR Lyrae star found in the OGLE Galactic bulge collection, OGLE-BLG-RRLYR-24137. In the OGLE catalog the star was identified as…
Blazhko-type modulation in the double-mode RR Lyrae stars of the OGLE Galactic bulge collection
R. Smolec, I. Soszyński, A. Udalski +10
We present the analysis of Blazhko-type modulation in double-mode RR Lyrae (RRd) stars found in the OGLE photometry of the Galactic bulge. Modulation is detected in 15 stars. Most…
Orbital and physical parameters of eclipsing binaries from the ASAS catalogue - VIII. The totally-eclipsing double-giant system HD 187669
K. G. Hełminiak, D. Graczyk, M. Konacki +14
We present the first full orbital and physical analysis of HD 187669, recognized by the All-Sky Automated Survey (ASAS) as the eclipsing binary ASAS J195222-3233.7. We combined mul…
Kepler photometry of RRc stars: peculiar double-mode pulsations and period doubling
P. Moskalik, R. Smolec, K. Kolenberg +11
We present the analysis of four first overtone RR Lyrae stars observed with the Kepler space telescope, based on data obtained over nearly 2.5yr. All four stars are found to be mul…
Chemical abundance analysis of symbiotic giants - II. AE Ara, BX Mon, KX TrA, and CL Sco
Cezary Galan, Joanna Mikolajewska, Kenneth H. Hinkle
Knowledge of the elemental abundances of symbiotic giants is essential to address the role of chemical composition in the evolution of symbiotic binaries, to map their parent popul…