scholarly journals The Promise of Multiwavelength and IFU Observations

2009 ◽  
Vol 5 (S262) ◽  
pp. 217-224
Author(s):  
Robert C. Kennicutt ◽  
Cai-Na Hao ◽  
Benjamin D. Johnson ◽  
Fabian Rosales-Ortega ◽  
Angeles Díaz ◽  
...  

AbstractMany of the advances of the last decade in this subject have been the result of large spectroscopic surveys of galaxies on the one hand, and multi-wavelength surveys of galaxies on the other. This talk highlights applications that exploit a combination of spectroscopic and multi-wavelength diagnostics. Most applications to date have been based on spatially integrated measurements of galaxies, but the introduction of wide-field integral field spectrometers promises to extend ths approach to spatially-resolved analyses of galaxies.

1961 ◽  
Vol 10 (1) ◽  
pp. 1-13 ◽  
Author(s):  
H. Moor ◽  
K. Mühlethaler ◽  
H. Waldner ◽  
A. Frey-Wyssling

The difficulties in sectioning frozen biological objects for electron microscopic investigations are overcome by Steere's freezing-etching method. In order to test this method and to open up a wide field of application, the new freezing-ultramicrotome has been designed. The apparatus consists of the combination of an ultramicrotome with freezing-drying and shadow-casting installations in the same vacuum container. The preliminary results show, on the one hand, the practicability of all preparational steps and, on the other, that it is possible to resolve internal structures of cell organelles and even macromolecular patterns.


2011 ◽  
Vol 7 (S284) ◽  
pp. 193-197
Author(s):  
Gregory F. Snyder ◽  
T. J. Cox ◽  
Christopher C. Hayward ◽  
Lars Hernquist ◽  
Patrik Jonsson

AbstractI discuss recent work in which we construct models of poststarburst galaxies by combining fully three-dimensional hydrodynamic simulations of galaxy mergers with radiative transfer calculations of dust attenuation. The poststarburst signatures can occur shortly after a bright starburst phase in gas-rich mergers, and thus offer a unique opportunity to study the formation of bulges and the effects of feedback. Several additional applications of spatially-resolved spectroscopic models of interacting galaxies include multi-wavelength studies of AGN/starburst diagnostics, mock integral field unit data to interpret the evolution of ULIRGs, and the ‘Green Valley’.Optical spectra of simulated major gas-rich galaxy mergers can be found at http://www.cfa.harvard.edu/~gsnyder


2014 ◽  
Vol 10 (S312) ◽  
pp. 128-130
Author(s):  
Ashkbiz Danehkar ◽  
Quentin A. Parker

AbstractWe have used the Wide Field Spectrograph on the Australian National University 2.3-m telescope to perform the integral field spectroscopy for a sample of the Galactic planetary nebulae. The spatially resolved velocity distributions of the Hα emission line were used to determine the kinematic features and nebular orientations. Our findings show that some bulge planetary nebulae toward the Galactic center have a particular orientation.


2010 ◽  
Vol 410 (1) ◽  
pp. 313-340 ◽  
Author(s):  
S. F. Sánchez ◽  
F. F. Rosales-Ortega ◽  
R. C. Kennicutt ◽  
B. D. Johnson ◽  
A. I. Diaz ◽  
...  

2019 ◽  
Vol 77 (4) ◽  
pp. 329-364
Author(s):  
Louis Vos

In dit artikel wordt de rol geanalyseerd van kardinaal Suenens in de ontknoping van de kwestie ‘Leuven-Vlaams’. Zijn mandement van 13 mei 1966, dat ook door de andere Belgische bisschoppen werd ondertekend, leidde een halve eeuw geleden tot de splitsing van de Leuvense universiteit.Suenens’ beslissing in 1966 om de Franstalige afdeling in Leuven te handhaven, lokte groot verzet uit in Vlaanderen. Het kwam tot een revolte tegen het kerkelijk gezag, enerzijds omdat de katholieke Vlaamse opinie de autoritaire ‘verordening’ van de bisschoppen als autoritair klerikalisme verwierp, anderzijds omdat een permanente Franstalige aanwezigheid in Leuven in Vlaanderen gezien werd als een bedreiging van het Vlaamse karakter van Brabant. Dat was voor de Vlaamse beweging en politici ook daarom onaanvaardbaar, omdat pas in 1963 de taalgrens was vastgelegd met als bedoeling homogene taalgebieden te creëren, eentalig Nederlands in Vlaanderen, ééntalig Frans in Wallonië, en tweetalig in Brussel.Toen in januari 1968 de UCL blijkens haar expansieplan in Leuven wilde blijven, leidde dat tot een tweede revolte, die het hele Vlaamse land beroerde. Een eerste gevolg ervan was dat het eenheidsfront van de kerkelijke hiërarchie verloren ging en de Vlaamse en Waalse bisschoppen respectievelijk het standpunt van de eigen taalgemeenschap bijtraden. De facto liet vanaf toen het episcopaat de beslissing over Leuven over aan de politiek. Een tweede gevolg was dat de politieke partijen – te beginnen met de christendemocratische – uiteenvielen naar taalgroep, wat leidde tot de val van de regering, tot parlementsverkiezingen, en een nieuwe regering die de splitsing en overheveling van de UCL naar Louvain-la-Neuve realiseerde.De historische betekenis van Suenens’ optreden lag ten eerste op het niveau van de Kerk zelf, want door lijnrecht in te gaan tegen de verwachtingen in Vlaanderen betreffende een ééntalig Leuven, en door de autoritaire toon van het bisschoppelijk mandement, vernietigde het kerkelijk gezag zijn eigen autoriteit. Ten tweede versterkte dit optreden het Vlaams-nationalisme en de communautaire tegenstellingen in het land, zodat daarna staatshervormingen in federaliserende zin onvermijdelijk werden. Ten derde verschoof de focus van de Leuvense studentenbeweging van Vlaamsgezind verzet tegen de bisschoppelijke verklaring, naar antiklerikalisme en anti-autoritarisme, en daarna naar een globale nieuwlinkse maatschappijkritiek. Ze bleef na 1968 een decenniumlang de Leuvense studentenbeweging oriënteren.Al deze gevolgen waren tegengesteld aan wat Suenens had bedoeld met het mandement. Hij gaf daarom later toe zich te hebben vergist. Vier elementen helpen die vergissing te verklaren: het besloten Franstalig milieu waarin hij leefde; de normatieve verwachting die aan zijn rol van primaat aartsbisschop van België kleefde; de gedachte dat de eenheid van de ‘grootste katholieke universiteiten ter wereld’ een voorwaarde was voor haar internationale rol; en ten slotte ook persoonlijke elementen, zoals zijn elitaire levensloop en aristocratische persoonlijkheid. Ze droegen alle bij tot het politieke falen van de kerkvorst.__________ “A Wide Field for the Student Movement Lies Open.” On the Origin and Character of the Flemish Front Movement This article analyses Cardinal Suenens’ role in the conclusion of the issue ‘Leuven Vlaams’ [Leuven Flemish]. His directive of May 13, 1966 – also supported by the other Belgian bishops – ultimately resulted in the separation of the university in Leuven half a century ago.Suenens’ decision in 1966 to maintain a Francophone branch at the university in Leuven had sparked great opposition in Flanders. This would culminate into a revolt against the clerical authorities because, on the one hand, the Catholic Flemish opinion designated the bishops’ rigid ‘ordinance’ as authoritarian clericalism, and because, on the other hand, a permanent Francophone presence in Leuven was considered a threat to the Flemish character of the province of Brabant. Consequently, the Flemish movement and politicians deemed this unacceptable, and were further emboldened by the fact that as recently as 1963 the linguistic border had been consolidated, which was intended to create linguistically homogenous regions: monolingual in Flanders and Wallonia, and bilingual in Brussels.When in January 1968 the UCL’s expansion plans conveyed its intentions to remain in Leuven, it sparked a second revolt that swept the entire Flemish land. A first consequence was the dissolution of the ecclesiastical hierarchy’s unity, as Flemish and Walloon bishops supported their own linguistic communities’ stance, ultimately leading to the episcopate relinquishing the decision over Leuven to politics. A second consequence was that political parties – starting with the Christian-democrats – disbanded and realigned along the linguistic fault line, which led to the fall of the government, parliamentary elections and a new government that implemented the separation and subsequence transfer of the UCL to Louvain-la-Neuve.The historical relevance of Suenens’ demea-nour is first of all related to the Catholic Church itself. The stark clash with Flemish expectations regarding a unilingual university at Leuven, and the authoritarian tone of the bishop’s directive had led to the abrogation of his pre-eminence by the clerical authorities. Secondly, his conduct strengthened Flemish nationalism and the country’s communitarian cleavage, thereby rendering the subsequent state reforms to federalism inevitable. Finally, Suenens’ stance transformed the student movement in Leuven, entailing a shift from Flemish opposition to the bishop’s decree towards anti-clericalism and anti-authoritarianism. This would subsequently contribute to the emergence of a general New Left critical orientation, which influenced the student movements for over a decade following 1968.All these effects were the exact reverse of the directive’s intentions. That is why Suenens later admitted that he had made a mistake. Four elements help to explain that error: the closed Francophone milieu in which he lived; the normative expectations that were associated with his role as Belgian’s archbishop; the presumption that the unity of ‘the biggest Catholic university in the world’ was a prerequisite for its international stature; and finally his personality, including his elite upbringing and aristocratic personality. These all contributed to the prelate’s political downfall.


2017 ◽  
Vol 74 (9) ◽  
pp. 2415-2426 ◽  
Author(s):  
Pierre Bourdaud ◽  
Morgane Travers-Trolet ◽  
Youen Vermard ◽  
Xochitl Cormon ◽  
Paul Marchal

Abstract The objective of this study is to analyse at fine scale the annual, seasonal and spatial distributions of several species in the Eastern English Channel (EEC). On the one hand, data obtained from scientific surveys are not available all year through, but are considered to provide consistent yearly and spatially resolved abundance indices. On the other hand, on-board commercial data do cover the whole year, but generally provide a biased perception of stock abundance. The combination of scientific and commercial catches per unit of effort (CPUEs), standardized using a delta-generalized linear model, allowed to infer spatial and monthly dynamics of fish distributions in the EEC, which could be compared with previous knowledge on their life cycles. Considering the scientific survey as a repository, the degree of reliability of commercial CPUEs was assessed with survey-based distribution using the Local Index of Collocation. Large scale information was in agreement with literature, especially for cuttlefish. Fine scale consistency between survey and commercial data was significant for half of the 19 tested species (e.g. whiting, cod). For the other species (e.g. plaice, thornback ray), the results were inconclusive, mainly owing to poor commercial data coverage and/or to particular aspects of the species biology.


1958 ◽  
Vol 149 (936) ◽  
pp. 424-424

Our discussion to-day has ranged over a wide field, extending from pure endocrinology on the one hand, to biochemistry on the other, and we have had excellent summaries of the present position regarding various aspects, endocrine, neuroendocrine and biochemical, of research on the mammary gland. It is interesting to recall that in 1950 a conference on the Mécanisme Physiologique de la Sécrétion Lactée was held at Strasbourg under the auspices of the Centre National de la Recherche Scientifique of France. This conference lasted a week and some of those taking part in to-day’s discussion also participated in the conference at Strasbourg. The proceedings of this conference were published in the form of a special volume. It is instructive to compare the state of knowledge of our subject in 1950 with what we know to-day and thus to gain an idea of the progress made during the intervening period. Dr Lyons had by then begun his elegant analysis of the hormonal factors responsible for mammary growth in the hypophysectomized rat, but his paper to-day shows how much more is now known about the hormonal interrelationships involved. Little was then known about the effects on mammary growth of metabolic hormones such as insulin and the adrenal corticoids. Moreover, work on the maintenance of lactation in hypophysectomized animals had hardly then begun. As regards the milk ejection reflex, the experiments of Cross & Harris on the electrical stimulation of the neurohypophysis which did so much to advance our knowledge of this aspect, was only then beginning and was briefly referred to during the discussion at Strasbourg.


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