Egy magyar nyelvkönyv a 19. század végéről

EGY MAGYAR NYELVKÖNYV A 19. SZÁZAD VÉGÉRÕL: Josef Holtzmann: Metodischer Unterricht in der ungarischen Sprache (1880

A Revised Parallax and its Implications for RX J185635-3754

New astrometric analysis of four WFPC2 images of the isolated neutron star RX J185635-3754 show that its distance is 117 +/- 12 pc, nearly double the originally published distance. At the revised distance, the star's age is 5 x 10^5 years, its space velocity is about 185 km/s, and its radiation radius inferred from thermal emission is approximately 15 km, in the range of many equations of state both with and without exotic matter. These measurements remove observational support for an extremely soft equation of state. The star's birthplace is still likely to be in the Upper Sco association, but a connection with zeta Oph is now unlikely.Comment: submitted to ApJ Letter

An Optical Velocity for the Phoenix Dwarf Galaxy

We present the results of a VLT observing program carried out in service mode using FORS1 on ANTU in Long Slit mode to determine the optical velocities of nearby low surface brightness galaxies. As part of our program of service observations we obtained long-slit spectra of several members of the Phoenix dwarf galaxy from which we derive an optical helio-centric radial velocity of -13 +/- 9km/s. This agrees very well with the velocity of the most promising of the HI clouds seen around Phoenix, which has a helio-centric velocity of -23 km/s, but is significantly different to the recently published optical heliocentric velocity of Phoenix of -52 +/- 6 km/s of Gallart et al. (2001).Comment: Aceepted for publication in MNRA

Gas distribution and starbursts in shell galaxies

Detailed maps of most elliptical galaxies reveal that, whereas the greatest part of their luminous mass originates from a smooth distribution with a surface brightness approximated by a de Vaucouleurs law, a small percentage of their light is contributed by low surface brightness distortions termed 'fine structures'. The sharp-edged features called 'shells' are successfully reproduced by merger and infall models involving accretion from less massive companions. In this context, dwarf spheroidal and compact disk galaxies are likely progenitors of these stellar phenomena. However, it is probable that the sources of shell-forming material also contain significant amounts of gas. This component may play an important role in constraining the formation and evolution of shell galaxies. To investigate the effects of the gaseous component, numerical simulations were performed to study the tidal disruption of dwarf galaxies containing both gas and stars by more massive primaries, and the evolution of the ensuing debris. The calculations were performed with a hybrid N-body/hydrodynamics code. Collisionless matter is evolved using a conventional N-body technique and gas is treated using smoothed particle hydrodynamics in which self-gravitating fluid elements are represented as particles evolving according to Lagrangian hydrodynamic equations. An isothermal equation of state is employed so the gas remains at a temperature 104 K. Owing to the large mass ratio between the primary and companion, the primary is modeled as a rigid potential and the self-gravity of both galaxies is neglected

Exchange and Influence: Hybridity and the Gate Reliefs of Thasos

For at least a decade, scholars examining colonial influences on the material culture of indigenous populations in the ancient Mediterranean have found recourse in the concept of hybridity. These investigators have recognized that in situations where different cultural groups meet and mix, artifactual and behavioral traits from both the dominant and the subordinate cultures mix, too. Those traits – what might, in other arenas of discourse, be called “memes” – are subsequently given new and localized meanings. The result is something that is neither one culture nor the other, but rather is new and different, something “in between”: a hybrid. This paper examines archaic and classical Thasos as a colonial context in which individuals belonging to different ethnic groups met and negotiated a wide variety of political, economic, and social relationships. Rather than looking at material of a strictly archaeological nature, such as grave goods or domestic assemblages, the subject of this paper will be an application of hybridity theory to Thasian visual arts. A series of relief sculptures found at Thasos shows that the artists who produced them were aware of – and open to – ideas and styles from across the Aegean and beyond, but they were not constrained to rote copying of those ideas. Hybridity therefore offers a powerful interpretative tool for understanding how Thasians adopted and adapted outside influences to suit their own needs, meanings, and society