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- Centre National de la Recherche ScientifiqueFR463 papers
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127 papers · 1 filter
Discovery of a Pair of Classical Cepheids in an Invisible Cluster Beyond the Galactic Bulge
I. Dékány, D. Minniti, G. Hajdu +6
We report the discovery of a pair of extremely reddened classical Cepheid variable stars located in the Galactic plane behind the bulge, using near-infrared time-series photometry…
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…
Doppler Tomography by Total Variation Minimization
Makoto Uemura, Taichi Kato, Daisaku Nogami +1
We have developed a new model of the Doppler tomography using total variation minimization (DTTVM). This method can reconstruct localized and non-axisymmetric profiles having sharp…
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…
TiNy Titans: The Role of Dwarf-Dwarf Interactions in the Evolution of Low Mass Galaxies
S. Stierwalt, G. Besla, D. Patton +5
We introduce TiNy Titans (TNT), the first systematic study of star formation and the subsequent processing of the interstellar medium in interacting dwarf galaxies. Here we present…