During the last decade, our understanding of stellar physics and evolution has undergone a tremendous revolution thanks to asteroseismology. Space missions such as CoRoT, Kepler, K2, and TESS have already been observing millions of stars providing high-precision photometric data. With these data, it is possible to study the convection of stars through the convective background in the power spectrum density of the light curves. The properties of the convective background or granulation has been shown to be correlated to the surface gravity of the stars. In addition, when we have enough resolution (so long enough observations) and a high signal-to-noise ratio (SNR), the individual modes can be characterized in particular to study the internal rotational splittings and magnetic field of stars. Finally, the surface magnetic activity also impacts the amplitude and hence detection of the acoustic modes. This effect can be seen as a double-edged sword. Indeed, modes can be studied to look for magnetic activity changes. However, this also means that for stars too magnetically active, modes can be suppressed, preventing us from detecting them.

In this talk, I will present some highlights on what asteroseismology has allowed us to better understand the convection, rotation, and magnetism of solar-like stars while opening doors to many more questions.

John McGreevy's Catholicism: A Global History from the French Revolution to Pope Francis hinges on seismic events that shook the foundations of the Catholic Church: the French Revolution, its aftershocks in many European nations, and the devastating effects of the Napoleonic Wars that followed. The episcopalism of Catholicism that arose from the ashes of the revolution seemed to reject the pillar of its globalism, namely the papacy. Pius IX paid for this with his life. Eternal Rome suddenly became mortal, overtaken by the revolutionaries. Catholic schools were nationalized. The Civil Constitution of the Clergy enacted an agenda for the secularization of society, the church itself, and its institutions. Notre Dame became a “Temple of Reason,” and the chalices and ciboria of Saint-Sulpice were melted down to make cash. The damage done to the church by this revolution was paralleled only by the communist revolutions of the twentieth century.

Germplasm characterization and evaluation are essential for the genetic improvement of crops. In this study, a collection of 204 groundnut accessions including 13 checks held by Plant Genetic Resources Research Institute, Ghana were evaluated under optimal conditions for 2 years. The objectives were to characterize the groundnut collection using 18 qualitative and 14 quantitative traits and to determine the relationships between the traits. Combined analysis of variance based on augmented design revealed significant differences (P < 0.05) among the accessions for majority of the traits. Results of principal component analysis showed that all the quantitative traits were relevant in discriminating the accessions. Primary seed colour was the most diverse qualitative trait based on Shannon diversity index (n = 0.77). Frequency distribution analysis showed predominance of decumbent growth habit and pale tan seeds. Cluster analysis using qualitative traits identified five major groups of accessions and three each based on quantitative traits and joint analysis of quantitative and qualitative traits. Number of main branches (NMB) and pod width (PW) appeared the most important traits with positive contribution to yield based on correlation and path coefficient analysis. Ten promising trait-specific accessions were identified for earliness along with desirable pod and seed traits. GH 9672 and GH 9665 were identified as promising for higher grain and fodder yield. Five accessions (GH 9833, GH 9829, GH 9830, GH 9835 and GH 9750) produced ~5–30% more grain yield than the best check. This study underscored ample phenotypic variation that would ultimately be exploited for genetic improvement of groundnut.

This paper deals with a case of Virgilian ambiguity, namely the famous hemistich at Aen. 4.298 omnia tuta timens. By highlighting a plausible reading with a causal force (‘fearing everything too calm’, ‘because of the excessive calmness’), it seeks to demonstrate that this hemistich is an ambiguous passage. This view is confirmed through the imitation by Valerius Flaccus, who, in alluding to the Virgilian passage (Argonautica 8.408–12), highlights its ambiguity by including both of the most plausible readings.

This article suggests a new reading for Oribasius’ Libri ad Eunapium 3.13.4. Based on evidence from both Greek and Syriac sources, it argues that the variant contained in Oribasius’ Synopsis ad Eustathium should be adopted as the correct reading of the original.

The formation of highly structured, spatially localized complex structures during solar flux emergence facilitates adaptation of topological methods, extending the research of emerging macroscopic MHD fluxes into knots, links and braids. Combining mathematical considerations, remote images and in situ satellite observations at solar vicinity, we construct new characteristics of those braided/knotted magnetic structures, applying Braid and Knot Theory to physical configurations, deducing their topological invariants, constraining the evolution and stability while delineating the relaxation path to magnetized equilibria.

The fast rotating solar analogs show a decrease of the dynamo period with an increase of the rotation rate for the moderate stellar rotation periods in the range between 10 and 25 days. Simultaneously, observations indicate two branches: the “in-active” branch stars shows short dynamo cycles and the active branch stars show the relatively long magnetic cycles. We suggest that this phenomenon can be produced by effect of the doubling frequency of the dynamo waves, which is due to excitation of the second harmonic. It is generated because of the nonlinear B2 effects in the large-scale dynamo.

En 1717, une plainte anonyme adressée au roi d’Espagne s’alarmait du nombre excessif de musulmans vivant à Carthagène (Murcie). Cette supplique déclencha une enquête du Conseil de Castille destinée à recenser les musulmans et à clarifier leur statut. Outre les esclaves des galères royales, l’enquête pointa tout particulièrement les libertinos, une catégorie méconnue d’esclaves privés résidant et travaillant librement dans la ville tout en étant lourdement endettés vis-à-vis de leurs maîtres en raison des sommes dues pour leur propre rachat. Cet article reconstitue la condition de ces esclaves déliés de leurs maisonnées et met au jour les tensions qu’elle suscita entre des normativités concurrentes. D’une part, le droit des esclaves à travailler pour financer leur affranchissement, tout comme celui des maîtres à vivre des rentes placées sur ces personnes étaient profondément ancrés dans les coutumes locales. D’autre part, en raison de l’augmentation de l’insécurité le long des côtes, les autorités locales et la couronne œuvrèrent à restreindre cet enchevêtrement de droits en obligeant les maîtres à garder leurs esclaves chez eux. Ce conflit entre des régimes d’esclavage différents, l’un inscrit dans les droits locaux, l’autre adossé à la juridiction royale, eut pour enjeu l’accès des esclaves au marché du travail, à la libre résidence ou encore aux protections dispensées par le droit des contrats. En faisant de l’enquête elle-même le nœud problématique de la recherche, cet article interroge le sens d’une procédure qui, en recensant les esclaves, procédait moins à un dénombrement démographique, qu’à une redistribution des droits de cité entre des habitants musulmans.

Central to this article are the minutes of nine codification meetings held in 1865 at various locations in West Sumatra. During these meetings the draft regulations for a new colonial legal system were discussed and negotiated by West Sumatran elites and Dutch officials. This episode and its unique archives serve as a microhistory of lawmaking, legal translation, and erasure. The article argues that the process of making colonialism procedural, as well as the genealogical workings of colonial knowledge production, are crucial to understanding the making and unmaking of law in the context of legal pluralities. It shows that finding similarities in interests and worldview, moments of ‘erasure through translation’, the symbolic language of fluidity of adat and legal hybridity, as well as the archival power of the material and the spatial elements of both the meetings and the minutes, were vehicles through which codification in West Sumatra was attempted and contested.

The Planetary Nebula Luminosity Function (PNLF) remains an important extragalactic distance indicator despite a still limited understanding of its most important feature - the bright cut-off. External galaxies benefit from consistent distance and extinction, which makes determining the PNLF easier but detailed study of individual objects much more difficult. Now, the advent of parallaxes from the Gaia mission has dramatically improved distance estimates to planetary nebulae (PNe) in the Milky Way. We have acquired ground-based narrowband imagery and measured the [OIII] fluxes for a volume-limited sample of hundreds of PNe whose best distance estimates from Gaia parallaxes and statistical methods place them within 3 kpc of the Sun. We present the first results of our study, comparing the local PNLF to other galaxies with different formation histories, and discussing how the brightness of the PNe relates to the evolutionary state of their central stars and the properties of the nebula.

This article explores the allusive strategy of the late second-century cento-tragedy Medea attributed to Hosidius Geta, which recounts Medea's revenge against Jason using verses from the works of Virgil. It argues that the text's author recognized a consistent strand of characterization in earlier treatments of the Medea myth, whereby the heroine's filicide is presented as a corrupted sacrifice. Geta selectively uses verses from thematically significant episodes in the Aeneid—the lying tale of Sinon and the death of Laocoön; the murder of Priam; the suicide of Dido—at key points to foreground the theme of pseudo-sacrificial violence. Geta's use of Virgil evinces a keen appreciation both of the symbolism of the broader mythic tradition in which his text is situated and of the original narrative contexts of the verses he recycles. The article's findings contribute to a growing recognition of the creative potential afforded by the cento technique.

I present a short overview of the COST Action NanoSpace (“Carbon molecular nanostructures in space”; CA21126) together with the most recent updates. This includes the main motivation and scientific challenges, Action structure and organization (e.g., working groups, tasks, etc.) as well as the main objectives and deliverables. A special emphasis is given to the interdisciplinary approach proposed to attack the Action challenge and the main needs to drive the field forward. Planetary nebulae (PNe) are wonderful astrochemistry laboratories and a dominant source of complex carbon molecular nanostructures (i.e., nanocarbons) in space, being key astronomical objects for NanoSpace. The main goal is to show the power of networking as a tool to understand nanocarbons in PNe as well as to encourage the participation and collaborations between the PNe community and the multiple interdisciplinary research fields represented in NanoSpace.