Download or read book Compter les galaxies infrarouges raconter leur histoire written by Matthieu Bethermin and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le fond extragalactique est le rayonnement relique issu de tous les processus de formation des structures dans l'Univers. Environ la moitié de ce fond, appelé fond infrarouge est émis dans l'intervalle 8-1000 microns, a un maximum d'émission autour de 150 microns, et est essentiellement dû aux processus de formation d'étoiles dans l'Univers. En effet, la luminosité infrarouge d'une galaxie est fortement liée à la formation d'étoiles en son sein. Pour bien comprendre l'origine du fond infrarouge, il faut donc également déterminer l'évolution des galaxies infrarouges.Une mesure statistique relativement simple permettant de comprendre l'origine du fond infrarouge, mais également l'évolution des galaxies, consiste à compter les sources en fonction de leur flux. J'ai mesuré les comptages de sources infrarouges dans les données des télescopes spatiaux Spitzer et Herschel, ainsi que celles de l'expérience BLAST, en utilisant des méthodes variées. Les sources détectées individuellement dans les cartes Spitzer à 24 microns émettent la majeure partie du fond. En revanche, à plus grande longueur d'onde, la sensibilité et la résolution angulaire des instruments décroît. Les sources détectées n'expliquent alors plus qu'une petite partie du fond. L'analyse par empilement (ou stacking) permet de mesurer le flux moyen infrarouge lointain ou sub-millimétrique d'une population détectée uniquement dans l'infrarouge moyen. Cette technique fournit des limites inférieures contraignantes sur la valeur du fond à grande longueur d'onde, mais permet également de compter les sources trop faibles pour être détectées individuellement. Ces résultats sont confirmés grâce à l'analyse dite P(D), qui permet de déterminer les comptages directement à partir de l'histogramme d'une carte infrarouge.Ces nouvelles contraintes permettent de préciser le scénario d'évolution des galaxies infrarouges. J'ai construit un modèle paramétrique d'évolution de ces objets permettant d'interpréter les comptages. Ce modèle reproduit de manière satisfaisant les propriétés statistiques de galaxies infrarouges de 15 microns à 1.1 mm. Il prédit que dans l'Univers jeune (z>2), la formation d'étoile a eu lieu majoritairement dans des galaxies ultra-lumineuses en infrarouges (LIR>10^12 luminosités solaires). Ces galaxies formaient des étoiles à un rythme très intense (plus de 100 masses solaires par ans) et n'ont que très peu d'équivalent dans l'Univers local. Depuis, le taux de formation d'étoiles a diminué d'un facteur 10, et la formation d'étoiles a aujourd'hui majoritairement lieu dans des galaxies semblables à la notre. Ce modèle d'évolution a par la suite été utilisé pour interpréter les fluctuations du fond infrarouge à grande longueur d'onde observées par BLAST, Planck et Herschel.
Download or read book Histoire cosmique de la formation d toiles vue dans l infrarouge written by Benjamin Magnelli and published by . This book was released on 2009 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis is devoted to the estimation of the cosmic star formation history of the Universe through the study of spectral properties of galaxies observed by the Spitzer satellite in the mid-and-far- infrared. My work begins with the extraction of sources contained in the Spitzer images and with the creation of multi- wavelengths catalogs. Using those catalogs I study the spectral properties of infrared galaxies and their evolution with redshift. From the comparison of these properties with the predictions of standard spectral librairies, I show that galaxies situated beyond z~1.3 present significant evolutions in their spectral properties. Based on these spectral properties, I estimate the cosmic star formation history of the Universe from z~0 to z~2.3. This history is charaterized by a sharp increase of the star formation density of the Universe form z~ 0 and z~1, followed by a stabilisation phase up to z~2. This star formation density is dominated between z~0.8 and z~2 by luminous infrared galaxies with high star formation rate. Finally, I study the presence of the 3.3 um PAH signature in the spectrum of distant galaxies (0.5 z
Download or read book The First Galaxies in the Universe written by Abraham Loeb and published by Princeton University Press. This book was released on 2013-01-15 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive, self-contained introduction to one of the most exciting frontiers in astrophysics today: the quest to understand how the oldest and most distant galaxies in our universe first formed. Until now, most research on this question has been theoretical, but the next few years will bring about a new generation of large telescopes that promise to supply a flood of data about the infant universe during its first billion years after the big bang. This book bridges the gap between theory and observation. It is an invaluable reference for students and researchers on early galaxies. The First Galaxies in the Universe starts from basic physical principles before moving on to more advanced material. Topics include the gravitational growth of structure, the intergalactic medium, the formation and evolution of the first stars and black holes, feedback and galaxy evolution, reionization, 21-cm cosmology, and more. Provides a comprehensive introduction to this exciting frontier in astrophysics Begins from first principles Covers advanced topics such as the first stars and 21-cm cosmology Prepares students for research using the next generation of large telescopes Discusses many open questions to be explored in the coming decade
Download or read book Practice Make Perfect French Vocabulary written by Eliane Kurbegov and published by McGraw Hill Professional. This book was released on 2011-09-02 with total page 239 pages. Available in PDF, EPUB and Kindle. Book excerpt: Master the words and phrases necessary for handling everyday situations Practice Makes Perfect: French Vocabulary helps you develop your vocabulary by providing practice in word-building and encouraging you to analyze new words for an ever-increasing vocabulary. Each chapter of this comprehensive book focuses on a theme, such as family or travel, so you can build your language skills in a systematic manner. As you lay the foundation for an increasing vocabulary, you are able to perfect your new words with plenty of exercises and gain the confidence to communicate well in French. Practice Makes Perfect: French Vocabulary offers you: More than 120 exercises Concise grammatical explanations A new chapter on contemporary vocabulary An answer key to gauge your comprehension With help from this book, you can easily speak or write in French about: Different occupations and jobs * French holidays and traditions * Taking the train * Growing your own garden * Where it hurts on your body * Your house * Your family and friends * What you studied in school * Your favorite TV show * Your family's background . . . and much more!
Download or read book Ecritures digitales written by Claire Clivaz and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ecritures digitales aims to demonstrate how digital writing, as new technology, contributes to the emergence of a reconfigured relationship between the human body and the machines, and how this transition influences the Jewish-Christian textual corpus referred to as "the Scriptures". Ecritures digitales souhaite démontrer de quelle manière l'écriture digitale, en tant que nouvelle technologie, contribue à l'émergence d'une relation innovante entre le corps humain et les machines, et influence le corpus textuel judéo-chrétien désigné comme «les Ecritures».
Download or read book Radical Pedagogies written by Beatriz Colomina and published by MIT Press. This book was released on 2022-05-31 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experiments in architectural education in the post–World War II era that challenged and transformed architectural discourse and practice. In the decades after World War II, new forms of learning transformed architectural education. These radical experiments sought to upend disciplinary foundations and conventional assumptions about the nature of architecture as much as they challenged modernist and colonial norms, decentered building, imagined new roles for the architect, and envisioned participatory forms of practice. Although many of the experimental programs were subsequently abandoned, terminated, or assimilated, they nevertheless helped shape and in some sense define architectural discourse and practice. This book explores and documents these radical pedagogies and efforts to defy architecture’s status quo. The experiments include the adaptation of Bauhaus pedagogy as a means of “unlearning” under the conditions of decolonization in Africa; a movement to design for “every body,” including the disabled, by architecture students and faculty at the University of California, Berkeley; the founding of a support network for women interested in the built environment, regardless of their academic backgrounds; and a design studio in the USSR that offered an alternative to the widespread functionalist approach in Soviet design. Viewed through their dissolution and afterlife as well as through their founding stories, these projects from the last century raise provocative questions about architecture’s role in the new century.
Download or read book Scapeland written by Gillian B. Pierce and published by Brill. This book was released on 2012-01-01 with total page 237 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scapeland: Writing the Landscape from Diderot’s Salons to the Postmodern Museum is a comparative, interdisciplinary study tracing theories of the sublime and a history of spectatorship from Diderot’s eighteenth-century French Salons, through art criticism by Baudelaire and Breton, to Jean-François Lyotard’s postmodern exhibition Les Immatériaux. In the Salons, an exploration of the painted landscape becomes an encounter with both the limits of representation and the infinite possibilities of fiction. Baudelaire and Breton explore similar limits in their work, set against the backdrop of the modern city. For them, as for Diderot, the attempt to render visual objects in narrative language leads to the development of new literary forms and concerns. Lyotard’s concept of the “postmodern museum” frames the sublime encounter, once again, in terms that expressly evoke Diderot’s verbal rendering of painted spaces as a personal promenade. According to Lyotard, Diderot “ouvre, par écrit, les surfaces des tableaux comme les portes d’une exposition.. . . [il] abolit . . . l’opposition de la nature et de la culture, de la réalité de l’image, du volume et de la surface.” Reading the literary production of these four writers alongside their art criticism, Scapeland considers narrative responses to art as imaginative assertions of human presence against the impersonal world of objects.
Download or read book Andy Warhol s Blow Job written by Roy Grundmann and published by Temple University Press. This book was released on 2003 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this ground-breaking and provocative book, Roy Grundmann contends that Andy Warhol's notorious 1964 underground film, Blow Job, serves as rich allegory as well as suggestive metaphor for post-war American society's relation to homosexuality. Arguing that Blow Job epitomizes the highly complex position of gay invisibility and visibility, Grundmann uses the film to explore the mechanisms that constructed pre-Stonewall white gay male identity in popular culture, high art, science, and ethnography. Grundmann draws on discourses of art history, film theory, queer studies, and cultural studies to situate Warhol's work at the nexus of Pop art, portrait painting, avant-garde film, and mainstream cinema. His close textual analysis of the film probes into its ambiguities and the ways in which viewers respond to what is and what is not on screen. Presenting rarely reproduced Warhol art and previously unpublished Ed Wallowitch photographs along with now iconic publicity shots of James Dean, Grundmann establishes Blow Job as a consummate example of Warhol's highly insightful engagement with a broad range of representational codes of gender and sexuality. Roy Grundmann is Assistant Professor of Film Studies at Boston University and a contributing editor of Cineaste.
Download or read book Digital Storytelling in Higher Education written by Grete Jamissen and published by Springer. This book was released on 2017-06-10 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book broadens the scope and impact of digital storytelling in higher education. It outlines how to teach, research and build communities in tertiary institutions through the particular form of audio-visual communication known as digital storytelling by developing relationships across professions, workplaces and civil society. The book is framed within the context of ‘The Four Scholarships’ developed by the Carnegie Foundation for the advancement and redefining of teaching, including the scholarships of discovery, integration, application, and teaching and learning. Across four sections, this volume considers the potential of digital storytelling to improve, enhance and expand teaching, learning, research, and interactions with society. Written by an international range of academics, researchers and practitioners, from disciplines spanning medicine, anthropology, education, social work, film and media studies, rhetoric and the humanities, the book demonstrates the variety of ways in which digital storytelling offers solutions to key challenges within higher education for students, academics and citizens. It will be compelling reading for students and researchers working in education and sociology.
Download or read book Poetics of the Elements in the Human Condition Part 2 The Airy Elements in Poetic Imagination written by Anna-Teresa Tymieniecka and published by Springer. This book was released on 2013-01-11 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Empires of Medieval West Africa written by David C. Conrad and published by Infobase Publishing. This book was released on 2010 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explores empires of medieval west Africa.
Download or read book A New Pocket Dictionary of the French and English Languages in Two Parts written by Thomas Nugent and published by . This book was released on 1770 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Syntax of Arabic and French Code Switching in Morocco written by Mustapha Aabi and published by Springer Nature. This book was released on 2019-08-28 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book posits a universal syntactic constraint (FPC) for code switching, using as its basis a study of different types of code-switching between French, Moroccan Arabic and Standard Arabic in a language contact situation. After presenting the theoretical background and linguistic context under study, the author closely examines examples of syntactic constraints in the language of functional bilinguals switching between French and forms of Arabic, proposing that this hypothesis can also be applied in other comparable language contact and translanguaging contexts worldwide. This book will be of interest to students and scholars of French, Arabic, theoretical linguistics, syntax and bilingualism.
Download or read book Anti Gender Campaigns in Europe written by Roman Kuhar and published by Rowman & Littlefield. This book was released on 2017-08-07 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edited collection offers a transnational and comparative approach to understanding anti-gender mobilizations in Europe.
Download or read book Poetics of the Elements in the Human Condition The Sea written by Anna-Teresa Tymieniecka and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Madness and Social Representations written by Denise Jodelet and published by Univ of California Press. This book was released on 1991-01-01 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: A striking account of a colony for the mentally ill that forces a reconsideration of madness in society. What happens when the mentally ill are not isolated from society but are instead welcomed into it and invited to take a place in the fabric of the community? Are fear and rejection replaced by the understanding and sympathy often engendered by familiarity? Or are the barriers between the sane and the mad only strengthened? We have experienced a taste of this scenario in the U.S. in the last decade with the new emphasis on de-institutionalization, but Denise Jodelet takes us to an extraordinary community in France where the mentally ill have assumed a visible and prominent role for more than seventy years. The small French town of Ainay-le-Ch�teau and its environs are the site of a "family colony" for men, established in 1900. Here the patients ("lodgers") live with ordinary families ("foster parents"), hold jobs, and are free to move about the countryside. Jodelet's chronicle of daily life in the colony is made rich and vivid by extensive ethnographic material as she unravels a complex set of relationships, ultimately finding that while some of the barriers between the "other" and the larger society have been overcome, new ones have arisen in their place. This unique social experiment provides invaluable social and cultural insights, illuminating many fundamental issues in psychology, psychiatry, and sociology.
Download or read book Nature and History in Modern Italy written by Marco Armiero and published by Ohio University Press. This book was released on 2010-08-31 with total page 315 pages. Available in PDF, EPUB and Kindle. Book excerpt: Marco Armiero is Senior Researcher at the Italian National Research Council and Marie Curie Fellow at the Institute of Environmental Sciences and Technologies, Universitat Aut(noma de Barcelona. He has published extensively on-Italian environmental history and edited Views from the South: Environmental Stories from the Mediterranean World. --
