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10 papers · 1 filter
WIYN Open Cluster Study. XXVI. Improved kinematic membership and spectroscopy of IC 2391
I. Platais, C. Melo, J. -C. Mermilliod +5
[Abridged] Contex. Young open clusters provide important clues to the interface between the main sequence and pre-main-sequence phases of stellar evolution. The young and nearby op…
A Comparison of the Published Stellar Photometry Data in the South-West Field of the Galaxy M31 Disk
D. Narbutis, R. Stonkute, V. Vansevicius
We compare stellar photometry data in the South-West part of the M31 disk published by Magnier et al. (1992), Mochejska et al. (2001) and Massey et al. (2006) as the local photomet…
A Survey of Compact Star Clusters in the South-West Field of the M31 Disk. UBVRI Photometry
D. Narbutis, V. Vansevicius, K. Kodaira +3
We present the results of UBVRI broad-band aperture CCD photometry of 51 compact star clusters located in the South-West part of the M31 disk. The mean rms errors of all measured s…
Modeling long-range memory trading activity by stochastic differential equations
V. Gontis, B. Kaulakys
We propose a model of fractal point process driven by the nonlinear stochastic differential equation. The model is adjusted to the empirical data of trading activity in financial m…
The particle as a canonically quantized multiskyrmion
A. Acus, E. Norvaisas, D. O. Riska
The rational map approximation to the solution to the SU(2) Skyrme model with baryon number B=4 is canonically quantized. The quantization procedure leads to anomalous breaking of…
Long-range memory model of trading activity and volatility
V. Gontis, B. Kaulakys
Earlier we proposed the stochastic point process model, which reproduces a variety of self-affine time series exhibiting power spectral density S(f) scaling as power of the frequen…