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Mostrando ítems 21-30 de 201
Optical multicolor polarization observations in the region of the open cluster NGC 5749
(EDP Sciences, 2007-12)
We present (UBVRI) multicolor linear polarimetric data for 31 of the brightest stars in the area of the open cluster NGC 5749 considered to study the properties of the interstellar medium (ISM) towards the cluster. Our ...
Measuring the continuum polarization with ESPaDOnS
(European Southern Observatory, 2015)
Aims. Our goal is to test the feasibility of obtaining accurate measurements of the continuum polarization from high-resolution spectra using the spectropolarimetric mode of ESPaDOnS. Methods. We used the new pipeline OPERA ...
Electromagnetic interaction models for the characterization of targets in SAR scenes: preliminary literature review
(Universidad de Carabobo, 2015-04)
This paper deals with the revision of literature on electromagnetic interaction models for characterizing targets from synthetic aperture radar SAR data. The primary motivation of this review is to encourage the creation ...
A polarimetric view of the open cluster Lynga 6 and the Cepheid TW Normae
(EDP Sciences, 2001-12)
We present UBVRI polarimetric observations of stars belonging to the small open cluster Lyng˚a 6 and of TW Nor, a Cepheid which can be seen near the center of the grouping. The wavelength of maximum polarization is computed ...
Pismis 20: one or two clusters?
(EDP Sciences, 2003-09)
We present UBVRI polarimetric observations of stars in the direction of the open cluster Pismis 20 and WR 67. It is found that the observed members segregate polarimetrically into two groups, with different associated mean ...