Способ построения интегрированной информационной среды на базе систем управления данными и систем автоматизированного проектирования

Рассмотрены аспекты построения единого информационного пространства для разработки высокотехнологичной продукции, реализованного в виде программного взаимодействия системы управления данными и систем автоматизированного проектирования. Предложены требования к интеграции систем указанных категорий, структура хранения типовых справочных данных, алгоритмы обмена информацией между интегрируемыми информационными системами с учетом состояний жизненного цикла объектов проектирования

The Reddening-Free Decline Rate Versus Luminosity Relationship for Type Ia Supernovae

We develop a method for estimating the host galaxy dust extinction for type Ia supernovae based on an observational coincidence first noted by Lira (1995), who found that the B-V evolution during the period from 30-90 days after V maximum is remarkably similar for all events, regardless of light curve shape. This fact is used to calibrate the dependence of the B(max)-V(max) and V(max)-I(max) colors on the light curve decline rate parameter delta-m15, which can, in turn, be used to separately estimate the host galaxy extinction. Using these methods to eliminate the effects of reddening, we reexamine the functional form of the decline rate versus luminosity relationship and provide an updated estimate of the Hubble constant of Ho = 63.3 +- 2.2(internal) +- 3.5(external) km/s/Mpc.Comment: 32 pages, 10 figures, AJ 1999 in pres

DeWitt Wallace Library Annual Report 2014-2015

Summary of library and media services activities for 2014-201

Long slit spectroscopy of a sample of isolated spirals with and without an AGN

We present the kinematical data obtained for a sample of active (Seyfert) and non active isolated spiral galaxies, based on long slit spectra along several position angles in the Halpha line region and, in some cases, in the Ca triplet region as well. Gas velocity distributions are presented, together with a simple circular rotation model that allows to determine the kinematical major axes. Stellar velocity distributions are also shown. The main result is that active and control galaxies seem to be equivalent in all kinematical aspects. For both subsamples, the departure from pure circular rotation in some galaxies can be explained by the presence of a bar and/or of a spiral arm. They also present the same kind of peculiarities, in particular, S-shape structures are quite common near the nuclear regions. They define very similar Tully-Fisher relations. Emission line ratios are given for all the detected HII regions; the analysis of the [NII]/Halpha metallicity indicator shows that active and non-active galaxies have indistinguishable disk metallicities. These results argue in favour of active and non-active isolated spiral galaxies having essentially the same properties, in agreement with our previous results based on the analysis of near infrared images. It appears now necessary to confirm these results on a larger sample.Comment: 35 pages, 54 figures, Accepted for publication in Astronomy & Astrophysics The full paper with its figures is available on the anonymous account of ftp.iap.fr in /home/ftp/pub/from_users/durret/marquez.ps.gz (999 kb

A??es de extens?o na UFFS - Universidade Federal Da Fronteira Sul, campus Cerro Largo/RS, para o aprendizado de softwares gr?ficos como o autocad

O trabalho apresenta a experi?ncia da UFFS - Universidade Federal da Fronteira Sul ? Campus Cerro Largo/RS, na implanta??o das a??es de Extens?o Universit?ria, voltadas ao aprendizado de softwares gr?ficos com o AutoCAD, que viabilizam o desenho assistido por computador e ampliam os conhecimentos acerca do desenho t?cnico executado sem o aux?lio de prancheta. Acredita-se que o relato e registro dessa experi?ncia sejam relevantes j? que abordam a??es de extens?o desenvolvidas no contexto de universidades recentemente criadas, como a UFFS. O trabalho aborda quest?es pertinentes aos recursos e meios necess?rios para viabilizar cursos de extens?o nesta ?rea; ao uso e ? disponibilidade do espa?o f?sico de laborat?rios, dos equipamentos, do software e dos materiais did?ticos, entre outros. Tamb?m s?o discutidos alguns aspectos da intera??o entre a universidade e a comunidade relacionados ao processo de ensino-aprendizagem. A popula??o tem buscado apropriar-se de novas tecnologias, como o AutoCAD, visando a otimiza??o e o aprimoramento dos servi?os de desenho e/ou elabora??o de projetos t?cnicos. Assim, a cria??o de um curso de extens?o nesta ?rea vem atender ?s demandas locais e regionais, considerando-se que a regi?o das Miss?es vem retomando o seu crescimento a partir da constru??o de barragens e da instala??o de um Campus da UFFS em Cerro Largo. Ent?o, foi proposto um Curso de Extens?o na modalidade presencial - ?Desenho t?cnico sem prancheta, assistido por computador: Modulo b?sico (30h) e M?dulo avan?ado (30h)?, que iniciou em mar?o de 2011 e, hoje, est? na sua segunda edi??o. O curso objetiva instrumentalizar os participantes a atuarem no desenvolvimento, na elabora??o e padroniza??o de projetos t?cnicos, levando-os a compreender a linguagem gr?fica do desenho t?cnico assistido por computador e a manipular uma s?rie de recursos do software AutoCAD, para a cria??o de desenhos e modelos nos espa?os bi e tridimensional

The distance of M33 and the stellar population in its outskirts

We present deep V,I photometry of two $9.4' x 9.4' field in the outer regions of the M33 galaxy. We obtain a robust detection of the luminosity of the Red Giant Branch Tip (I{TRGB}=20.72 +- 0.08) from which we derived a new estimate of the distance modulus of M33, (m-M)_0=24.64 +- 0.15, corresponding to a distance D=847 +- 60 Kpc. By comparison of the color and magnitude of the observed Red Giant Branch stars with ridge lines of template globular clusters we obtained the photometric metallicity distribution of the considered fields in three different metallicity scales. The derived metallicity distributions are very similar over a range of distances from the galactic center 10' <= R <= 33', and are characterized by a well defined peak at [M/H] ~ -0.7 ([Fe/H] ~ -1.0, in the Zinn & West scale) and a weak metal-poor tail reaching [M/H] ~ -2.0. Our observations demonstrate that Red Giant Branch and Asymptotic Giant Branch stars have a radial distribution that is much more extended than the young MS stars associated with the star-forming disc.Comment: 10 pages,10 figures,accepted for publication in Astronomy & Astrophysic

The dependence of HII region properties on global and local surface brightness within galaxy discs

Using B, R, and H-alpha images of roughly equal-sized samples of low surface brightness (LSB) and high surface brightness (HSB) galaxies (~40 galaxies apiece), we have explored the dependence of HII region properties on local and global disc surface brightness. We have done this by constructing co-added HII region luminosity functions (LFs) according to local and central disc surface brightness and fitting Schechter functions to these LFs. The results show that the shape of the HII region LF within LSB galaxies does not change noticeably as different limiting (i.e., mu>mu_lim) local surface brightness values are used. However, the LFs for HSB galaxies have larger values of L_* and are less steep at the faint-end than those of LSB galaxies for limiting B-band local surface brightness values as faint as mu_B,lim~23-24. Both the LFs and the data for individual HII regions show that luminous (log L>39 ergs/s) HII regions are much more common within HSB discs than within LSB discs, implying that the newly formed star clusters are also larger. Taking this into account along with the results of Monte Carlo simulations, the shapes of the LFs imply that the regions within LSB discs and those within the LSB areas of HSB discs are relatively old (~5 Myr) while the regions within HSB discs for mu_B<24 are significantly younger (<1 Myr). Since the majority of the LSB galaxies do not have noticeable spiral arms and the majority of the HSB galaxies do, this may indicate a transition within HSB discs from spiral arm-driven star formation to a more locally driven, possibly sporadic form of star formation at mu_B~24, a transition that does not appear to occur within LSB discs.Comment: Accepted to MNRA

Imaging and Demography of the Host Galaxies of High-Redshift Type Ia Supernovae

We present the results of a study of the host galaxies of high redshift Type Ia supernovae (SNe Ia). We provide a catalog of 18 hosts of SNe Ia observed with the Hubble Space Telescope (HST) by the High-z Supernova Search Team (HZT), including images, scale-lengths, measurements of integrated (Hubble equivalent) BVRIZ photometry in bands where the galaxies are brighter than m ~ 25 mag, and galactocentric distances of the supernovae. We compare the residuals of SN Ia distance measurements from cosmological fits to measurable properties of the supernova host galaxies that might be expected to correlate with variable properties of the progenitor population, such as host galaxy color and position of the supernova. We find mostly null results; the current data are generally consistent with no correlations of the distance residuals with host galaxy properties in the redshift range 0.42 < z < 1.06. Although a subsample of SN hosts shows a formally significant (3-sigma) correlation between apparent V-R host color and distance residuals, the correlation is not consistent with the null results from other host colors probed by our largest samples. There is also evidence for the same correlations between SN Ia properties and host type at low redshift and high redshift. These similarities support the current practice of extrapolating properties of the nearby population to high redshifts pending more robust detections of any correlations between distance residuals from cosmological fits and host properties.Comment: 35 pages, 12 figures, 4 tables, accepted for publication in A