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Driven by ground-based, airborne, and IRAS observations, the PAH hypothesis was first formulated in the mid-eighties : the widespreas emission features in the 3-13 æm range are due to UV-pumped, IR fluorescence by large Polycyclic Aromatic Hydrocarbon molecules. These molecules are a ubiquitous component of the interstellar medium both in local galaxies as well as out to redshifts of ̃3 and probably beyond, play an important role in its physical and chemical characteristics, and form a key link between small hydrocarbon species and large carbonaceous grains. This book gathers contributions that reflect the evolution of the field over the last 25 years, taking advantage of IR space missions - ISO, Spitzer and AKARI - and of dedicated experimental and quantum-chemical studies. We have now reached a stage where we can develop these mid-infrared features as diagnostic tools to study star formation processes, protoplanetary disks as well as galaxy assemblage in the early Universe. The current Herschel/Planck area opens the possibility to better characterize the mid-IR carriers through their contribution to the far-IR and mm emissions. Still, much effort is required before we will fully understand the formation and nature of interstellar PAHs and their role in the Universe. Physical chemists can play an important role in driving this field. This book aims at discussing the state-of-the-art of the PAH hypothesis and to chart the future in this interdisciplinary field. It highlights the various aspects of interstellar PAHs:- Rich IR spectra of interstellar PAHs- PAHs and star formation in the near and far Universe- The lifecycle of PAHs in space- PAHs in regions of planet formation- PAHs and carbonaceous grains & Solar system materials.

Stars --- Organic Chemistry, --- Infrared spectra --- Polycyclic aromatic hydrocarbons --- PAH hypothesis --- space missions --- Congresses. --- Congresses. --- Congresses. --- PAH hypothesis --- space missions

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Driven by ground-based, airborne, and IRAS observations, the PAH hypothesis was first formulated in the mid-eighties : the widespreas emission features in the 3-13 æm range are due to UV-pumped, IR fluorescence by large Polycyclic Aromatic Hydrocarbon molecules. These molecules are a ubiquitous component of the interstellar medium both in local galaxies as well as out to redshifts of ̃3 and probably beyond, play an important role in its physical and chemical characteristics, and form a key link between small hydrocarbon species and large carbonaceous grains. This book gathers contributions that reflect the evolution of the field over the last 25 years, taking advantage of IR space missions - ISO, Spitzer and AKARI - and of dedicated experimental and quantum-chemical studies. We have now reached a stage where we can develop these mid-infrared features as diagnostic tools to study star formation processes, protoplanetary disks as well as galaxy assemblage in the early Universe. The current Herschel/Planck area opens the possibility to better characterize the mid-IR carriers through their contribution to the far-IR and mm emissions. Still, much effort is required before we will fully understand the formation and nature of interstellar PAHs and their role in the Universe. Physical chemists can play an important role in driving this field. This book aims at discussing the state-of-the-art of the PAH hypothesis and to chart the future in this interdisciplinary field. It highlights the various aspects of interstellar PAHs:- Rich IR spectra of interstellar PAHs- PAHs and star formation in the near and far Universe- The lifecycle of PAHs in space- PAHs in regions of planet formation- PAHs and carbonaceous grains & Solar system materials.

Stars --- Organic Chemistry, --- Infrared spectra --- Polycyclic aromatic hydrocarbons --- Congresses. --- Congresses. --- Congresses. --- PAH hypothesis --- space missions

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Mines and mineral resources --- Jacumba/In-ko-pah Wilderness (Calif.) --- California

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"Born in a Paiute community in western Nevada at a time when the Paiutes' homeland and traditional way of life were increasingly threatened, Sarah [Winnemucca] dedicated much of her life to working for her people. She played an instrumental and controversial role as interpreter and messenger for the U.S. Army during the Bannock War of 1878 and traveled to Washington in 1880 to obtain the release of her people from confinement on the Yakama reservation. She toured the East Coast in the 1880s, tirelessly giving speeches about the plight of her people and heavily criticizing the reservation system. In 1883 she produced her autobiography - the first written by a Native American woman. Using private contributions, she returned to Nevada and founded a Native school whose educational practices and standards were far ahead of its time. [This book is] composed not only of public challenges and accomplishments but also of private struggles, joys, and ambitions. Unforgettable glimpses of her personality and private life leap from these pages: her notorious sharp tongue and wit, her love of performance, her place in a legendary family of Paiute leaders, her long string of failed relationships, and, at the end, possible poisoning by a romantic rival."--Jacket.

Paiute Indians --- Pah-Ute Indians --- Piute Indians --- Indians of North America --- Numic Indians --- Government relations. --- Hopkins, Sarah Winnemucca,

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Geomorphology --- Geology, Stratigraphic --- Zion National Park (Utah) --- Holocene Epoch --- Late Quaternary Period --- Postglacial Epoch --- Recent Epoch --- Virgin River --- Adams River (Utah-Nev.) --- Pah-roos River --- Pah-roose River --- Pilar River --- Rio de la Virgen --- Rio Fulfurio de las Pyramides --- Rio Pilar --- Rio Virgen River --- Rio Virgin --- Santa Clara River (Utah-Nev.) --- Virgen River --- Alluvial plain. --- Geomorphic geology --- Physiography --- Physical geography --- Landforms