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41 papers · 1 filter
Electronic spectra of linear HCH and cumulene carbene HC
M. Steglich, J. Fulara, S. Maity +2
The transition of linear HCH (A) has been observed in a neon matrix and gas phase. The assignment is based on mass-selective experiments, extrap…
The band-gap of Tl-doped gallium nitride alloys
M. J. Winiarski
Structural and electronic properties of hypothetical zinc blende Tl(x)Ga(1-x)N alloys have been investigated from first principles. The structural relaxation, preformed within the…
Thermodynamics of weakly coupled Falicov-Kimball chains from renormalization-group theory
Jozef Sznajd
The linear perturbation renormalization group is used to study spinless two-band fermion chains at half-filling. The model consists of two species of spinless fermions, namely loca…
Modeling vertical structure in circular velocity of spiral galaxy NGC 4244
Joanna Jałocha, Łukasz Bratek, Szymon Sikora +1
We study the vertical gradient in azimuthal velocity of spiral galaxy NGC 4244 in a thin disk model. With surface density accounting for the rotation curve, we model the gradient p…
Discovery of a new group of double-periodic RR Lyrae stars in the OGLE-IV photometry
H. Netzel, R. Smolec, W. Dziembowski
We report the discovery of a new group of double-periodic RR Lyrae stars from the analysis of the OGLE-IV Galactic bulge photometry. In 11 stars identified in the OGLE catalog as f…
Neutron drip transition in accreting and nonaccreting neutron star crusts
N. Chamel, A. F. Fantina, J. L. Zdunik +1
The neutron-drip transition in the dense matter constituting the interior of neutron stars generally refers to the appearance of unbound neutrons as the matter density reaches some…