Search results for "Planets"
showing 10 items of 47 documents
Abundance signature of M dwarf stars
2020
Most of our current knowledge on planet formation is still based on the analysis of main-sequence, solar-type stars. Conversely, detailed chemical studies of large samples of M-dwarf planet hosts are still missing. We aim to test whether the correlations between the metallicity, individual chemical abundances, and mass of the star and the presence of different type of planets found for FGK stars still holds for the less massive M dwarf stars. Methods to determine in a consistent way stellar abundances of M dwarfs from high-resolution optical spectra are still missing. The present work is a first attempt to fill this gap. We analyse in a coherent and homogeneous way a large sample of M dwarf…
The radio science experiment with BepiColombo mission to Mercury
2016
BepiColombo is a joint ESA/JAXA mission to Mercury with challenging objectives regarding geophysics, geodesy and fundamental physics. The Mercury Orbiter Radio science Experiment (MORE) is one of the on-board experiments, including three different but linked experiments: gravimetry, rotation and relativity. Using radio observables (range and range-rate) performed with very accurate tracking from ground stations, together with optical observations from the on-board high resolution camera (SIMBIO-SYS) and accelerometer readings from the on-board accelerometer (ISA), MORE will be able to measure with unprecedented accuracy the global gravity field of Mercury and the rotation state of the plane…
The shifting evocations ofsquadrismo:remembering the massacre of Palazzo d’Accursio in Fascist Bologna
2016
AbstractThe massacre of Palazzo d’Accursio is considered one of the first events in the rise of the Fascist squads. This article analyzes the ways in which the event was described in Bologna during the twenty years that followed it. It is believed that in the first few years, commemorations that emphasized the role of the Fascist squads were not very common. Instead, they concentrated on the life of Giulio Giordani, a murdered lawyer and opposition councilor, who became a martyr. Members of the city’s ruling class, especially lawyers, developed their own rituals of commemoration, but the establishment of the regime led to the acquisition of the commemorations of Giordani by Fascism, reflect…
(Re)negotiating Freedom of Expression in the Spanish Transition: The Case of El Papus (1973-1987)
2020
Juxtaposing documents from judicial and administrative archives with material published in the satirical magazine El Papus (1973-1987), this essay examines the confrontation between national-Catholic discourse and new modes of visual and textual expression in late Francoism and the early years of the democratic transition in Spain. The present study represents a survey of some 44 state-produced documents and 124 journalistic pieces, applying a two-pronged methodology rooted in discourse analysis with a special focus on the content and themes deemed unfit for publication in the pages of El Papus. The results will show that a loosening of erotic and sexual mores, particularly those related to…
‘Culture’ as a discursive resource in newspaper articles from Le Monde about secularism : constructing ‘us’ through strategic oppositions with religi…
2017
Building on research highlighting the complex webs of relations between secularism, culture, and religion, this study investigates how the concept of culture was utilized in discourses of laïcité from the newspaper le Monde. Articles (N = 76) published between 2011 and 2014 were analyzed using qualitative content analysis. Results revealed the agency associated with the use of culture as it was strategically – rather than systematically – used in opposition to religion. Overall, culture – and the practices it defined – tended to be represented as normal and invisible. On the other hand, religion tended to be constructed as a disruption to secularism and the corresponding cultural reality. T…
FRIPON: a worldwide network to track incoming meteoroids
2020
Context. Until recently, camera networks designed for monitoring fireballs worldwide were not fully automated, implying that in case of a meteorite fall, the recovery campaign was rarely immediate. This was an important limiting factor as the most fragile - hence precious - meteorites must be recovered rapidly to avoid their alteration. Aims. The Fireball Recovery and InterPlanetary Observation Network (FRIPON) scientific project was designed to overcome this limitation. This network comprises a fully automated camera and radio network deployed over a significant fraction of western Europe and a small fraction of Canada. As of today, it consists of 150 cameras and 25 European radio receiver…
La crisis gremial y los problemas de la sedería valenciana (finales del siglo XVIII y principios del siglo XIX)
1992
La reforma del sistema gremial alcanza una de sus medidas más radicales con la abolición de los gremios de torcedores de seda en 1793. En estas páginas se analiza la medida abolicionista en el marco general de los problemas de la sedería valenciana. En la misma, la hilatura, de la que el torcido es su fase superior y última, había llegado a constituirse en un cuello de botella que comprometía su futuro. En los años aquí contemplados, se proponen y ensayan diversas alternativas que solucionen las disfunciones que generaba la peculiar división del trabajo que obraba en la sedería. La no implicación del capital comercial de la ciudad en la necesaria reconversión de la hilatura será un factor c…
Kant and Goethe
1972
In this paper we want to consider the inner connection between Kant and Goethe; therefore we want to emphasize primarily aspects they have in common rather than points of opposition. Goethe says for example about Kant’s Critique of Pure Reason that this “voice has brought a great advancement,” in so far as through it man has been able “to awaken concerning himself,” concerning his “highest faculty of reason.” Goethe was above all impressed, however, by the Critique of Judgment and he confessed: “The great main ideas of this work were analogous to my own previous ideas.” It was for him “an exceedingly great deed... that Kant placed art and nature in his Critique of Judgment side by side” so …
Walking on exoplanets: Is Star Wars right?
2016
As the number of detected extrasolar planets increases, exoplanet databases become a valuable resource, confirming some details about planetary formation, but also challenging our theories with new unexpected properties.
X-Raying the Dark Side of Venus - Scatter from Venus Magnetotail?
2016
This work analyzes the X-ray, EUV and UV emission apparently coming from the Earth-facing (dark) side of Venus as observed with Hinode/XRT and SDO/AIA during a transit across the solar disk occurred in 2012. We have measured significant X-Ray, EUV and UV flux from Venus dark side. As a check we have also analyzed a Mercury transit across the solar disk, observed with Hinode/XRT in 2006. We have used the latest version of the Hinode/XRT Point Spread Function (PSF) to deconvolve Venus and Mercury X-ray images, in order to remove possible instrumental scattering. Even after deconvolution, the flux from Venus shadow remains significant while in the case of Mercury it becomes negligible. Since s…