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413 papers · 1 filter
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…
A Proof for the Mode Stability of a Self-similar Wave Map
Ovidiu Costin, Roland Donninger, Xiaoyue Xia
We study the fundamental self-similar solution to the SU(2) sigma model, found by Shatah and Turok-Spergel. We give a rigorous proof for its mode stability. Based on earlier result…
Measurement of the differential decay branching fraction as a function of and study of form factor parameterizations
J. P. Lees
Based on a sample of 500 million events recorded by the BaBar detector at c.m. energies of close to 10.6 GeV, we report on a study of the decay $D^0 \to π^- e^…
ALMA Imaging of HCN, CS and dust in Arp 220 and NGC 6240
Nick Scoville, Kartik Sheth, Fabian Walter +19
We report ALMA Band 7 (350 GHz) imaging at 0.4 - 0.6arcsec resolution and Band 9 (696 GHz) at ~0.25arcsec resolution of the luminous IR galaxies Arp 220 and NGC 6240. The long wave…
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…
The X-Shaped Milky Way Bulge in OGLE-III Photometry and in N-Body Models
David M. Nataf, Andrzej Udalski, Jan Skowron +11
We model the split red clump of the Galactic bulge in OGLE-III photometry, and compare the results to predictions from two N-body models. Our analysis yields precise maps of the br…