Moderate spectral resolution observations of 3 micron absorption features in highly obscured objects

The 3 micron absorption spectra of sources seen in or behind molecular clouds generally show a variety of absorption features. Three separate absorptions are used to explain these features. The cooled-grating array spectrometer (CGAS) at the NASA Infrared Telescope Facility was used to obtain spectra of the late-type mass-loss star OH 0739-12 and the protostars MonR2 IRS-2 and IRS-3 (solid circles). The differences between the spectra are discussed

Versatile helimagnetic phases under magnetic fields in cubic perovskite SrFeO3

A helical spin texture is of great current interest for a host of novel spin-dependent transport phenomena. We report a rich variety of nontrivial, helimagnetic phases in the simple cubic perovskite SrFeO3 under magnetic fields up to 42 T. Magnetic and resistivity measurements revealed that the proper-screw spin phase proposed for SrFeO3 can be subdivided into at least five kinds of ordered phases. Near the multicritical point, an unconventional anomalous Hall effect was found to show up and was interpreted as due to a possible long-period noncoplanar spin texture with scalar spin chirality.Comment: 5 pages, 5 figures, Physical Review B in pres

Superconformal Symmetry in Linear Sigma Model on Supermanifolds

We consider a gauged linear sigma model in two dimensions with Grassmann odd chiral superfields. We investigate the Konishi anomaly of this model and find out the condition for realization of superconformal symmetry on the world-sheet. When this condition is satisfied, the theory is expected to flow into conformal theory in the infrared limit. We construct superconformal currents explicitly and study some properties of this world-sheet theory from the point of view of conformal field theories

Evaluation Methods Based on Stress Resultant for Seismic Performance of Steel Members with Fiber Model

AbstractThe fiber model which is one kind of frame analysis methods is sometimes used as an effective tool for the nonlinear dynamic response analysis. Recently, some seismic evaluation methods based on the strain for evaluating the seismic performance of stiffened steel box members were proposed. However, it is reported that these previous methods based on the strain cannot adequately estimate the seismic performance. In this study, it is explained that the stress resultant can be little affected by hysteresis patterns and have the ability to be a good parameter in order to evaluate the seismic performance appropriately. In addition, a seismic evaluation method based on the stress resultant with the fiber model is proposed for evaluating the seismic performance of stiffened steel box members. Finally, the validity of the proposed method is confirmed for stiffened steel box members by comparing the calculation results by the proposed method with the experimental results and FEM analysis results