The Deep SWIRE Field III. WIYN Spectroscopy

We present the results of spectroscopy using HYDRA on the WIYN 3.5m telescope of objects in the deep SWIRE radio field. The goal of the project was to determine spectroscopic redshifts for as many of the brighter objects in the field as possible, especially those detected in the radio and at 24 microns. These redshifts are primarily being used in studies of galaxy evolution and the connection of that evolution to AGN and star-formation. Redshifts measured for 365 individual objects are reported. The redshifts range from 0.03 to 2.5, mostly with z < 0.9. The sources were selected to be within the WIYN HYDRA field of approximately 30' in radius from the center of the SWIRE deep field, 10h46m00s, 59d 01'00" (J2000). Optical sources for spectroscopic observation were selected from a r-band image of the field. A priority list of spectroscopic targets was established in the following order: 20cm detections, 24 micron detections, galaxies with r < 20 and the balance made up of fainter galaxies in the field. We provide a table listing the galaxy positions, measured redshift and error, and note any emission lines that were visible in the spectrum. In practice almost all the galaxies with r < 19 were observed including all of the radio sources and most of the 24 microns sources with r < 20 and a sample of radio sources which had fainter optical counterparts on the r-band image.Comment: 6 pages, 3 tables, 2 figures, full electronic tables at http://www.aoc.nrao.edu/~fowen/papers/SWIRE/WIYNpaper3/, accepted ApJ Suppl Serie

Interaction between electronic structure and strain in Bi nanolines on Si(001)

Heteroepitaxial strain can be a controlling factor in the lateral dimensions of 1-D nanostructures. Bi nanolines on Si(001) have an atomic structure which involves a large sub-surface reconstruction, resulting in a strong elastic coupling to the surrounding silicon. We present variable-bias STM and first principles electronic structure calculations of the Bi nanolines, which investigates this interaction. We show that the strain associated with the nanolines affects the atomic and electronic structure of at least two neighbouring Si dimers, and identify the mechanism behind this. We also present partial charge densities (projected by energy) for the nanoline with clean and hydrogenated surroundings and contrast it to the clean Si(001) surface.Comment: 10 pages, 3 figures, submitted to Surface Scienc

Henry\u27s Birthday

Fiction by Joan Owen

Fichte’s method of moral justification

While Kant’s claim that the moral law discloses our freedom to us has been extensively discussed in recent decades, the reactions to this claim among Kant’s immediate successors have gone largely overlooked by scholars. Reinhold, Creuzer, and Maimon were among three prominent thinkers of the era unwilling to follow Kant in making the moral law the condition for knowing our freedom. Maimon went so far as to reject Kant’s method of appealing to our everyday awareness of duty on the grounds that common human understanding is susceptible to error and illusion. In this paper I shall examine how these skeptical reactions to Kant’s position shaped the background for Fichte’s method of moral justification, leading up to his own deduction of the moral law in the System of Ethics. By way of conclusion, I shall propose a new interpretation of how consciousness of the moral law serves as an entry-point to Fichte’s form of idealism