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Les sciences mathématiques et physiques dans l’ancienne Université de Vilna (1579—1832)
No full textThe abstracts (in two languages) can be found in the pdf file of the article.
Original author name(s) and title in Russian and Lithuanian:
З. Жемайтис. Физико-математические науки в старом Вильнюсском университете (1579—1832 гг.)
Z. Žemaitis. Fizikos ir matematikos mokslai Vilniaus senajame universitete (1579—1832
IX A 1 - Alte Stadtrechnungen (1579 - 1580)
No full textIX A 1 - ALTE STADTRECHNUNGEN (1579 - 1580)
IX A 1 - Alte Stadtrechnungen (1579 - 1580) ( -
Galaxy Zoo:chiral correlation function of galaxy spins
Full text linkGalaxy Zoo is the first study of nearby galaxies that contains reliable information about the spiral sense of rotation of galaxy arms for a sizeable number of galaxies. We measure the correlation function of spin chirality (the sense in which galaxies appear to be spinning) of face-on spiral galaxies in angular, real and projected spaces. Our results indicate a hint of positive correlation at separations less than ~0.5 Mpc at a statistical significance of 2-3 sigma. This is the first experimental evidence for chiral correlation of spins. Within tidal torque theory it indicates that the inertia tensors of nearby galaxies are correlated. This is complementary to the studies of nearby spin axis correlations that probe the correlations of the tidal field. Theoretical interpretation is made difficult by the small distances at which the correlations are detected, implying that substructure might play a significant role, and our necessary selection of face-on spiral galaxies, rather than a general volume-limited sample
IX A 1 - Alte Stadtrechnungen (1578 - 1579)
No full textIX A 1 - ALTE STADTRECHNUNGEN (1578 - 1579)
IX A 1 - Alte Stadtrechnungen (1578 - 1579) ( -
Discovery of a single faint AGN in a large sample of z > 5 Lyman break galaxies
Full text linkAs part of a large spectroscopic survey of z > 5 Lyman break galaxies (LBGs), we have identified a single source which is clearly hosting an active galactic nucleus (AGN). Out of a sample of more than 50 spectroscopically confirmed R-band dropout galaxies at z∼ 5 and above, only J104048.6−115550.2 at z= 5.44 shows evidence for a high ionization potential emission line indicating the presence of a hard ionizing continuum from an AGN. Like most objects in our sample the rest-frame-UV spectrum shows the UV continuum breaking across a Lyα line. Uniquely within this sample of LBGs, emission from N V is also detected, a clear signature of AGN photoionization. The object is spatially resolved in Hubble Space Telescope (HST) imaging. This, and the comparatively high Lyα/N V flux ratio indicates that the majority of the Lyα (and the UV continuum longward of it) originates from stellar photoionization, a product of the ongoing starburst in the LBG. Even without the AGN emission, this object would have been photometrically selected and spectroscopically confirmed as a Lyman break in our survey. The measured optical flux (IAB= 26.1) is therefore an upper limit to that from the AGN and is of order 100 times fainter than the majority of known quasars at these redshifts. The detection of a single object in our survey volume is consistent with the best current models of high redshift AGN luminosity function, providing a substantial fraction of such AGN is found within luminous starbursting galaxies. We discuss the cosmological implications of this discovery
IX A 1 - Alte Stadtrechnungen (1579 - 1580)
No full textIX A 1 - ALTE STADTRECHNUNGEN (1579 - 1580)
IX A 1 - Alte Stadtrechnungen (1579 - 1580) ( -
Reading Railroad (RDG) 1579
No full textA photograph print showing the Reading Railroad (RDG) 1579, 2-8-0 camelback
EC09-1579 Beneficial Insects II
Full text linkExtension Circular 09-1579 discusses beneficial insects II
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