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Author: Jean-Charles Cuillandre
Publisher:
ISBN:
Category :
Languages : en
Pages : 237
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Book Description
MOTIVEE PAR DES PROGRAMMES SCIENTIFIQUES QUI S'ETENDENT DE L'ETUDE DU SYSTEME SOLAIRE A LA PHYSIQUE EXTRAGALACTIQUE ET LA COSMOLOGIE, L'IMAGERIE CCD GRAND CHAMP CONNAIT ACTUELLEMENT UN ESSOR CONSIDERABLE. LA CAMERA MOCAM (MOSAIC CAMERA), UNE MOSAIQUE CCD DE 4096X4096 PIXELS POUR LE FOYER PRIMAIRE DU TELESCOPE CANADA-FRANCE-HAWAII, EST UN INSTRUMENT SPECIALEMENT CONCU POUR REPONDRE AUX CONTRAINTES DE L'IMAGERIE ULTRA-PROFONDE GRAND CHAMP A HAUTE RESOLUTION SPATIALE. SA REALISATION, SON INSTALLATION SUR LE SITE DU MAUNA KEA ET LES PREMIERES OBSERVATIONS CONSTITUENT UN DES GRANDS VOLETS DE CETTE THESE. LES DIFFERENTS ASPECTS DES TECHNIQUES INSTRUMENTALES, D'ACQUISITION ET DE TRAITEMENT DES DONNEES ONT ETE ETUDIES AFIN D'ABOUTIR A UNE COMBINAISON OPTIMISEE POUR L'IMAGERIE ULTRA-PROFONDE. LA SECONDE PARTIE DE CE MEMOIRE EXPOSE LES RESULTATS OBTENUS AVEC MOCAM SUR LA DETECTION D'UN HALO DIFFUS AUTOUR DE LA GALAXIE NGC 5907. L'EXISTENCE ET LE PROFIL DE CE HALO QUI POURRAIT TRACER LA MATIERE NOIRE DE CETTE GALAXIE ONT ETE CONFIRMES. L'ETUDE EN DEUX COULEURS A SURTOUT CONTRAINT LA NATURE DES OBJETS QUI LE COMPOSENT: DES ETOILES DE MOINS DE 0.8 MASSE SOLAIRE. L'OBSERVATION D'UNE GRANDE REGION EXTERNE DE LA GALAXIE M31 AVEC LA CAMERA UH8K AU CFHT A MIS EN EVIDENCE UNE FORTE CORRELATION ENTRE LA DISTRIBUTION DE POUSSIERES ET LE GAZ ATOMIQUE HI, INDIQUANT INDIRECTEMENT UNE METALLICITE ELEVEE DE 0.4 SOLAIRE A 23 KPC DU CENTRE DE LA GALAXIE. L'ANALYSE DES POPULATIONS STELLAIRES DE CETTE REGION TRES RECULEE DU DISQUE A MIS EN EVIDENCE DES ETOILES JEUNES DONT L'ORIGINE RESTE MYSTERIEUSE. LA TROISIEME PARTIE DE CETTE THESE ABORDE L'OPTIMISATION D'UN MODE D'OBSERVATION EN SPECTROSCOPIE CCD DIT PAR VA-ET-VIENT DE CHARGES QUI DEVRAIT PERMETTRE DE TIRER PLEINEMENT PARTIE DES CAPACITES DES TELESCOPES DE LA CLASSE DES 8 METRES. UNE VALIDATION EN LABORATOIRE A PREDIT UN GAIN DE 1 A 2 MAGNITUDE EN MODE BASSE RESOLUTION PAR RAPPORT A LA TECHNIQUE STANDARD ; L'IMPLANTATION SUR LE SPECTROGRAPHE MOS DU CFHT A PROUVE LA FAISABILITE DE LA METHODE
Author: Jean-Charles Cuillandre
Publisher:
ISBN:
Category :
Languages : en
Pages : 237
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Book Description
MOTIVEE PAR DES PROGRAMMES SCIENTIFIQUES QUI S'ETENDENT DE L'ETUDE DU SYSTEME SOLAIRE A LA PHYSIQUE EXTRAGALACTIQUE ET LA COSMOLOGIE, L'IMAGERIE CCD GRAND CHAMP CONNAIT ACTUELLEMENT UN ESSOR CONSIDERABLE. LA CAMERA MOCAM (MOSAIC CAMERA), UNE MOSAIQUE CCD DE 4096X4096 PIXELS POUR LE FOYER PRIMAIRE DU TELESCOPE CANADA-FRANCE-HAWAII, EST UN INSTRUMENT SPECIALEMENT CONCU POUR REPONDRE AUX CONTRAINTES DE L'IMAGERIE ULTRA-PROFONDE GRAND CHAMP A HAUTE RESOLUTION SPATIALE. SA REALISATION, SON INSTALLATION SUR LE SITE DU MAUNA KEA ET LES PREMIERES OBSERVATIONS CONSTITUENT UN DES GRANDS VOLETS DE CETTE THESE. LES DIFFERENTS ASPECTS DES TECHNIQUES INSTRUMENTALES, D'ACQUISITION ET DE TRAITEMENT DES DONNEES ONT ETE ETUDIES AFIN D'ABOUTIR A UNE COMBINAISON OPTIMISEE POUR L'IMAGERIE ULTRA-PROFONDE. LA SECONDE PARTIE DE CE MEMOIRE EXPOSE LES RESULTATS OBTENUS AVEC MOCAM SUR LA DETECTION D'UN HALO DIFFUS AUTOUR DE LA GALAXIE NGC 5907. L'EXISTENCE ET LE PROFIL DE CE HALO QUI POURRAIT TRACER LA MATIERE NOIRE DE CETTE GALAXIE ONT ETE CONFIRMES. L'ETUDE EN DEUX COULEURS A SURTOUT CONTRAINT LA NATURE DES OBJETS QUI LE COMPOSENT: DES ETOILES DE MOINS DE 0.8 MASSE SOLAIRE. L'OBSERVATION D'UNE GRANDE REGION EXTERNE DE LA GALAXIE M31 AVEC LA CAMERA UH8K AU CFHT A MIS EN EVIDENCE UNE FORTE CORRELATION ENTRE LA DISTRIBUTION DE POUSSIERES ET LE GAZ ATOMIQUE HI, INDIQUANT INDIRECTEMENT UNE METALLICITE ELEVEE DE 0.4 SOLAIRE A 23 KPC DU CENTRE DE LA GALAXIE. L'ANALYSE DES POPULATIONS STELLAIRES DE CETTE REGION TRES RECULEE DU DISQUE A MIS EN EVIDENCE DES ETOILES JEUNES DONT L'ORIGINE RESTE MYSTERIEUSE. LA TROISIEME PARTIE DE CETTE THESE ABORDE L'OPTIMISATION D'UN MODE D'OBSERVATION EN SPECTROSCOPIE CCD DIT PAR VA-ET-VIENT DE CHARGES QUI DEVRAIT PERMETTRE DE TIRER PLEINEMENT PARTIE DES CAPACITES DES TELESCOPES DE LA CLASSE DES 8 METRES. UNE VALIDATION EN LABORATOIRE A PREDIT UN GAIN DE 1 A 2 MAGNITUDE EN MODE BASSE RESOLUTION PAR RAPPORT A LA TECHNIQUE STANDARD ; L'IMPLANTATION SUR LE SPECTROGRAPHE MOS DU CFHT A PROUVE LA FAISABILITE DE LA METHODE
Author: David Peck Todd
Publisher:
ISBN:
Category : Astronomy
Languages : en
Pages : 506
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Book Description
Author: John Frederick William Herschel
Publisher:
ISBN:
Category : Astronomy
Languages : en
Pages : 406
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Author: Friedrich Argelander
Publisher: Wentworth Press
ISBN: 9780353998131
Category : Fiction
Languages : en
Pages : 140
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Book Description
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author: François Arago
Publisher:
ISBN:
Category : Astronomy
Languages : en
Pages : 916
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Book Description
Author: Robert Salas
Publisher: Career Press
ISBN: 9781601633422
Category : Body, Mind & Spirit
Languages : en
Pages : 0
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Book Description
In 1969 the U.S. Air Force issued a statement that read' "No UFO reported, investigated and evaluated by the Air Force was ever an indication of threat to our national security." This statement is patently false. It has been proven untrue by the testimony of many military officers and airmen and documentation of incidents involving UFOs and nuclear weapons, testimonies of which the U.S. Air Force was fully aware. Unidentified details many of these testimonies, some for the first time. As partial justification for its position, the Air Force cites a University of Colorado study that was contracted and paid for by federal funds. Unidentified reveals how this study was actually just another part of the plan to cover up the reality of the UFO phenomenon. For the first time, Unidentified publishes evidence that the investigators for the Colorado study knew about the UFO-related missile shutdown incidents but did not investigate them or include them in their final report.
Author: Laurence Gardner
Publisher: HarperCollins UK
ISBN: 000714296X
Category : History
Languages : en
Pages : 466
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Book Description
The Ark of the Covenant is the source of one of the deepest mysteries of the Western world. Laurence Gardner has accessed Rosicrucian archives to reveal where the Ark is, what it is and how this lost secret of the distant past has led to the phenomenal new science of space-time manipulation.
Author: Clifford E. Stone
Publisher: S.P.I. Books
ISBN: 9781561719723
Category : Human-alien encounters
Languages : en
Pages : 0
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Author: Buzz Aldrin
Publisher: Open Road Media
ISBN: 1480421537
Category : Fiction
Languages : en
Pages : 802
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Book Description
An Apollo 11 astronaut and the Nebula Award–nominated author of Directive 51 present a novel that “conveys the wonder and promise of space” (Publishers Weekly). Born the year of the Moon landing, Chris Terence spends his life fighting to return humanity to that pinnacle. An engineering student with dreams of spaceflight, he finds upon graduation that the United States no longer has need for astronauts. Years of bureaucratic meddling have reduced the space program to a shell of itself, and it will take the greatest scientific find in history to send humanity skyward once more. After years battling budget hawks, Chris finally gets his chance to walk on the Moon. While there, he finds evidence of an ancient alien civilization, the Tiberians, who visited Earth’s satellite eight thousand years before. Understanding what happened to those long-forgotten travelers will define the lives of Chris and his son, as they fight against all odds to unlock the secrets of the universe. “The collaboration of the first man to pilot a moon lander (Aldrin) with a major voice in contemporary science fiction (Barnes) has produced a fascinating chronicle of man’s first encounter with alien intelligence” (Booklist).
