4,356 research outputs found

    Probing the atmosphere of a sub-Jovian planet orbiting a cool dwarf

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    We derive the 0.01 μ\mum binned transmission spectrum, between 0.74 and 1.0 μ\mum, of WASP-80b from low resolution spectra obtained with the FORS2 instrument attached to ESO's Very Large Telescope. The combination of the fact that WASP-80 is an active star, together with instrumental and telluric factors, introduces correlated noise in the observed transit light curves, which we treat quantitatively using Gaussian Processes. Comparison of our results together with those from previous studies, to theoretically calculated models reveals an equilibrium temperature in agreement with the previously measured value of 825K, and a sub-solar metallicity, as well as an atmosphere depleted of molecular species with absorption bands in the IR (5σ\gg 5\sigma). Our transmission spectrum alone shows evidence for additional absorption from the potassium core and wing, whereby its presence is detected from analysis of narrow 0.003 μ\mum bin light curves (5σ\gg 5\sigma). Further observations with visible and near-UV filters will be required to expand this spectrum and provide more in-depth knowledge of the atmosphere. These detections are only made possible through an instrument-dependent baseline model and a careful analysis of systematics in the data.Comment: 13 pages, 11 figures, 3 tables. Accepted for publication in MNRA

    Entrepreneurship in public administration and public policy programs in Germany and the United States

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    The following contribution hypothesizes that it is crucial for future professionals in public administrations and organizations to be familiar with the concepts, tools, and techniques of policy, public, and social entrepreneurship to address societal, environmental, health, and wicked problems in an innovative and sustainable way. Attention is drawn to the importance of entrepreneurship as an essential asset and feature of public administration and public policy education at higher educational institutions in Germany and the United States. The paper aims at filling a research gap because knowledge about the interrelationships between entrepreneurship and public administration and public policy education is still underdeveloped. Emphasis is put on the discussion why entrepreneurship should be incorporated in curricula and how study programs have been designed or reformed, while placing emphasis on entrepreneurship in meeting current and complex challenges in the public sector. Findings from a systematic online assessment are presented which show whether and how policy, public and social entrepreneurship are taught as an integral element of current governance and public policy study programs and what difference it makes teaching and learning wise. The findings reflect a high demand for entrepreneurship education by public administration and public policy students, on the one hand, and a low incorporation in curricula, on the other hand. Two case studies from Germany and the United States are presented which serve as good practice examples on how to transfer public, policy, and social entrepreneurship into curricula

    Introduction:Toward More Inclusive and Comparative Perspectives in the Histories of Geographical Knowledge

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    This is an Accepted Manuscript of an article published by Taylor & Francis in The Professional Geographer on 17 March 2017, available online: http://www.tandfonline.com/10.1080/00330124.2017.1288572
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