We present the compilation catalogue of redshift-independent distances included in the HyperLEDA database. It is actively maintained to be up-to-date, and the current version counts 6640 distance measurements for 2335 galaxies compiled from 430 published articles. Each individual series is recalibrated onto a common distance scale based on a carefully selected set of high-quality measurements.This information together with data on H i line width, central velocity dispersion, magnitudes, diameters, and redshift is used to derive a homogeneous distance estimate and physical properties of galaxies, such as their absolute magnitudes and intrinsic size.
Archaeometallographic data suggest that there were two technological models in Eastern Europe as early as the Bronze Age–Early Iron Age transition period (9th–7th centuries BC). We link their development to two routes via which knowledge of use of ferrous metals diffused from Anatolia. The first route reached the North Caucasus, the second route passed through Greece and the Balkans to Central and Eastern Europe.
The earliest iron artefacts are often presented as products made of meteoritic iron, which is characterised by its high iron content. However, recent studies have shown that high nickel and iron content cannot be taken as a firm criterion for establishing its meteoritic origin. The most effective tool for helping to specify the elemental composition in such cases is a metallographic analysis. It turns out that the material of many artefacts regarded as having been forged from meteoritic iron could in fact be bloomery iron. An analysis of ample yet scattered evidence suggests that the production of items from meteoritic iron could in fact be irregular and sporadic.
This article discusses the role of rural blacksmithing in the economic structure of a feudal state. The study is based on the metallographic analysis of a large number of iron objects taken from archaeological sites of Ancient Rus’. It can be summarized that rural blacksmithing craft was a much more complex phenomenon than previously believed. The authors have come to the conclusion that the rural blacksmithing was an important component of the production sphere of Ancient Rus’ and had a significant contribution to the feudal economies.
It is impossible to obtain a full-fledged description of the industrial culture of Rus without studying the role of rural handicrafts. The research on the vector of development of rural blacksmith craft is of great interest, in particular, the extent to which this vector reflects the dynamics of urban craft. It was established that rural craftsmen did not only supply raw materials to urban craft centres and produce technologically simple products, but also embraced technological innovations. The accumulated analytical data made it possible to suggest the coinciding dynamics of the development of urban and rural handicrafts. The authors conducted a comparative analysis for such a category of objects as knives, which is one of the most numerous groups of iron tools. The article shows a complex picture of the chronological distribution of technological patterns for making knives on rural sites. It is concluded that the rural blacksmith craft in Rus was in constant development.
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