ERC FUNDED PROJECTS

Galactic stellar nuclei are very common in all types of galaxies and are marked by the presence of nuclear star clusters, the densest and most massive star clusters in the present-day Universe. Their formation is still an unresolved puzzle. The centre of the Milky Way contains a massive black hole and a stellar nucleus and is orders of magnitude closer than any comparable target. It is the only galactic nucleus and the most extreme astrophysical environment that we can examine on scales of milli-parsecs. It is therefore a crucial laboratory for studying galactic nuclei and their role in the context of galaxy evolution. Yet, suitable data that would allow us to examine the stellar component of the Galactic Centre exist for less than 1% of its projected area. Moreover, the well-explored regions are extraordinary, like the central parsec around the massive black hole, and therefore probably not representative for the overall environment. Fundamental questions on the stellar population, structure and assembly history of the Galactic Centre remain therefore unanswered. This project aims at addressing the open questions by obtaining accurate, high-angular resolution, multi-wavelength near-infrared photometry for an area of several 100 pc^2, a more than ten-fold increase compared to the current state of affairs. The Galactic Centre presents unique observational challenges because of a combination of high extinction and extreme stellar crowding. It is therefore not adequately covered by existing or upcoming imaging surveys. I present a project that is specifically tailored to overcome these observational challenges. In particular, I have developed a key technique to obtain the necessary sensitive, high-angular resolution images with a stable point spread function over large, crowded fields. It works with a range of existing ground-based instruments and will serve to complement existing data to provide a global and detailed picture of the stellar nucleus of the Milky Way.

1 547 657 €

Start date: 2014-02-01, End date: 2019-01-31

"While polemics and dialogue between Judaism and Christianity are as old as the Christian religion itself, one can clearly distinguish different periods, trends and intensities in the relations between the faiths. A significant landmark in this long and complex history is the Latin translation of large sections of the Talmud, the most important Jewish post-biblical text and the basis for the development of Rabbinic Judaism. When during the 13th century Christian theologians started to examine and translate the Talmud from Hebrew and Aramaic into Latin, they were faced with a huge body of texts which represented centuries of legalistic and homiletic materials. The discovery of this immense post-biblical Jewish literature became a source of fascination for Christians who believed that this text, which encompasses every aspect of Jewish life, was fundamental both for refuting the Jewish faith and for substantiating the truth of Christianity. This realization heralded a rethinking of the place of Jews in Christian society and redefined Christian-Jewish dialogue and polemic. The purpose of our project is to edit and publish the largest extant collection of Talmudic passages translated from Hebrew into Latin, that is, the ""Extractiones de Talmud"", while studying this ground-breaking document in the context of the trial and burning of the Talmud in 1240-42 and its aftermath. This project addresses vital questions of Jewish and Christian identity, still relevant to the 21st century, and can only be carried out by a transdisciplinary research team including specialists from Latin Philology, Hebrew Studies and History."

1 292 700 €

Start date: 2014-10-01, End date: 2018-09-30

Concepts of large bodies of glacial ice and liquid standing water, a robust hydrological cycle, and a rich Martian history of climate change are part of the current consensus model for early Mars. However, questions still poorly constrained include: a precise understanding of the inventory of water during the first billion years of Mars history and its early evolution on both global and local scales; whether liquid or solid H2O dominated, for what duration of time and where the water resided; what were the host-rock weathering rates and patterns and the physicochemical parameters defining such interactions; what specific landforms and mineralogies were generated during those periods; and what implications all these processes had on the possible inception of life on Mars. These fundamental questions represent large uncertainties and knowledge gaps. Therefore, a quantitative understanding of the basic characteristics of water on early Mars is very much needed and is the focus of this proposal. This application outlines a plan for my research in the next five years, and explains how I propose to fully characterize the aqueous environments of early Mars through a quantitative and truly interdisciplinary investigation. Spacecraft mission-derived datasets will be consistently used to test hypotheses through paleogeomorphological reconstructions, geochemical modeling, mineralogical studies, and astrobiological investigations. The derived results will produce hard constraints on the physical evolution, chemical alteration and habitability of surface and near-surface aqueous environments on early Mars. The planned investigations will benefit from the combination of working with first-hand data from ongoing Mars missions and with the state-of-the-art laboratory tools at the host institution. The final expected result will be a complete understanding of the physicochemical nature of water on early Mars, also opening new paths for the astrobiological exploration of the planet.

1 998 368 €

Start date: 2019-06-01, End date: 2024-05-31

The main goal of this project is to demonstrate that reading acquisition (RA) drastically reshapes our phonemic inventory, and to investigate the time-course and fine-grained properties of this recalibration. The main innovative and ground-breaking aspect of this project is the merging of two research fields, (1) reading acquisition and (2) phonemic recalibration, together with a deep and extensive exploration of the (3) perception-production link, which results in a new research line that pushes the boundaries of our understanding of the complex interactions between auditory and visual language perception and production. We will demonstrate that phonemic representations (PRs) become more stable (less dispersed) during the process of learning to read, and that this recalibration varies according to the grapheme-phoneme conversion rules of the reading system. We will explore such recalibration by means of the first cross-linguistic longitudinal study examining the position and dispersion of PRs, both in perception and production of phonemes and words. Secondly, we will explore how recalibration develops when RA is impaired as is the case in dyslexic children –informing the research field on (4) dyslexia– and when pre-reading PRs are unstable as is the case in deaf children with cochlear implants –informing the research field on (5) deafness. Finally, the research will also be extended to PR recalibration during RA in a second language –informing the research on (6) bilingualism. This proposal provides the first systematic investigation of phonemic recalibration during literacy acquisition, and will provide important insight for pragmatic research and theoretical accounts of language perception and production and phonemic recalibration. This project will also have major implications for the clinical field (theories and remediation of dyslexia and deafness) and for social policies and education (bilingualism, spoken and written language teaching).

1 875 000 €

Start date: 2019-10-01, End date: 2024-09-30