Auswahl der wissenschaftlichen Literatur zum Thema „Planeraty formation“
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Zeitschriftenartikel zum Thema "Planeraty formation"
Maynes, Mary Jo. „Reviews of Books:Antifeminismus im Kaiserreich: Diskurs, soziale Formation und politische Mentalitat Ute Planert“. American Historical Review 107, Nr. 3 (Juni 2002): 962–63. http://dx.doi.org/10.1086/532626.
Der volle Inhalt der QuelleScheck, Raffael. „Antifeminismus im Kaiserreich: Diskurs, soziale Formation und politische Mentalität. By Ute Planert. Göttingen: Vandenhoeck & Ruprecht. 1998. Pp. 447. DM 84.00. ISBN 3-525-35787-7.“ Central European History 34, Nr. 2 (Juni 2001): 258–60. http://dx.doi.org/10.1017/s0008938900006154.
Der volle Inhalt der QuelleLittmarck, Sofia, Magnus Jansson, Mats Bevemyr und Helene Elvstrand. „Fritidshemmets fysiska lärmiljöer. Förutsättningar för och planering av inomhusmiljöer för varierade handlingserbjudanden“. Barn – forskning om barn og barndom i Norden 41, Nr. 4 (07.12.2023). http://dx.doi.org/10.23865/barn.v41.5301.
Der volle Inhalt der QuelleGehmacher, Johanna. „Christina Klausmann, Politik und Kultur der Frauenbewegung im Kaiserreich. Das Beispiel Frankfurt am Main. Ute Planert, Antifeminismus im Kaiserreich. Diskurs, soziale Formation und politische Mentalität“. L'Homme 9, Nr. 2 (Januar 1998). http://dx.doi.org/10.7767/lhomme.1998.9.2.305.
Der volle Inhalt der Quelle„Ute Planert. Antifeminismus im Kaiserreich: Diskurs, soziale Formation und politische Mentalität. (Kritische Studien zur Geschichtswissenschaft, number 124.) Göttingen: Vandenhoeck und Ruprecht. 1998. Pp. 447. DM 84“. American Historical Review, Juni 2002. http://dx.doi.org/10.1086/ahr/107.3.962.
Der volle Inhalt der QuelleDissertationen zum Thema "Planeraty formation"
Pourré, Nicolas. „Détection par interférométrie optique d'exoplanètes géantes jeunes à l'échelle de l'unité astronomique“. Electronic Thesis or Diss., Université Grenoble Alpes, 2024. http://www.theses.fr/2024GRALY032.
Der volle Inhalt der QuelleDirect observations provide key information about exoplanetary systems. By analyzing the position of planets at different times, we can determine their orbits and trace the dynamic history of the systems. By analyzing their emission spectra, we can determine the temperature of exoplanets, as well as the chemical composition of their atmosphere, containing tracers of their formation mechanism.However, direct observations are currently limited. Angular resolution limits allow us to observe only the exoplanets furthest from their star, generally more than 10 astronomical units away. Also, the limits of contrast with the host star mean that we can only observe young giant exoplanets, less than 15 Myr, whose infrared thermal radiation is still strong due to their recent formation. To better understand the formation and evolution of planetary systems, these limits must be pushed back to enable direct observations of gas giants on the scale of the astronomical unit.Since 2019, the GRAVITY instrument installed on the Very Large Telescope Interferometer in Chile has made it possible to observe exoplanets at angular separations previously unattainable by conventional direct imaging instruments. Recently, the instrument enabled the first direct observations of the planets β Pictoris c and HD 206893 c, respectively 8.2 and 12.7 masses from Jupiter and 2.7 and 3.5 astronomical units from their star.In summer 2024, the GRAVITY+ upgrade will install new adaptive optics crucial for obtaining better contrast and making observations of less massive exoplanets closer to their star. In 2026, the Gaia space telescope will publish a new list of exoplanets discovered around 2 astronomical units from their star using absolute astrometry. GRAVITY+ will be an instrument of choice for characterizing these planets, measuring their mass and spectrum at wavelengths close to 2 µm.My thesis involves understanding the current limitations of GRAVITY, and preparing the GRAVITY+ upgrade to enable direct observation of "young Jupiters" as close as possible to their star. My thesis was divided into three parts.Firstly, I analyzed data from archival observations to quantify GRAVITY's current limitations in contrast and angular separation. I was able to determine that we could observe exoplanets 30,000 times fainter than their star, down to 50 milli-arcseconds.Secondly, I worked on observational data reduction to understand the source of systematic noise that pollutes exoplanet spectra. I was able to determine the conditions under which these noises appear and their impact on observations.Thirdly, I worked directly on the instrument to implement a high-contrast mode for GRAVITY+. This specific mode for exoplanet observations involves optical aberration correction and wavefront control. The high-contrast mode will limit the impact of host starlight, enabling us to observe less massive and younger exoplanets.In the years to come, the synergy between Gaia and GRAVITY+ will allow us to finely characterize many young giant exoplanets, and certainly transform our vision of how planetary systems form and how they evolve