Magnetic Fields and the Formation of New Worlds

Projektinformationen

NewWorlds

ID Finanzhilfevereinbarung: 740651

DOI

10.3030/740651

Projekt abgeschlossen

EK-Unterschriftsdatum 4 Mai 2017

Startdatum 1 Oktober 2017

Enddatum 30 September 2024

Finanziert unter

• EXCELLENT SCIENCE - European Research Council (ERC)

Gesamtkosten

€ 3 487 580,00

EU-Beitrag

€ 3 487 580,00

Koordiniert durch

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS
France

Periodic Reporting for period 5 - NewWorlds (Magnetic Fields and the Formation of New Worlds)

Berichtszeitraum: 2023-10-01 bis 2024-09-30

Zusammenfassung vom Kontext und den Gesamtzielen des Projekts

Magnetic fields impact the formation of low-mass stars and their planets, and contribute to setting adequate conditions for life to appear. They control the amount of material and angular momentum from which stars and their planets form and mature, and can save newborn close-in planets from falling into their host stars. Magnetic fields can also affect planets by eroding their atmospheres and limiting their habitability, while hampering at the same time their detectability. Our understanding of these issues is however limited and critically needs observational guidance.

NewWorlds addresses these forefront topics by exploiting SPIRou, a new state-of-the-art near-infrared spectropolarimeter / velocimeter integrated in our group in 2017 and installed in 2018 on the 3.6-m Canada-France-Hawaii Telescope (CFHT) in Hawaii. Since 2019, SPIRou has been carrying out two Large Observation Programmes, first the SPIRou Legacy Survey (SLS) then SPICE, directly related to NewWorlds' objectives and allocated 484 CFHT nights over the duration of the project.

With SPIRou, the SLS and SPICE, the dedicated NewWorlds team and collaborators unveiled unknown planets orbiting our closest stellar neighbors. NewWorlds also explored how stars and their planetary systems like our own Solar System form and evolve into maturity, and how magnetic fields contribute to their birth.

As recently illustrated by the Nobel Prized in Physics awarded to the discoverers of the first exoplanet, NewWorlds’ results, addressing the existence of other potentially habitable worlds around nearby stars as well as the mysteries of the origins of life in the Solar System, are of obvious interest for the general public.

Arbeit, die ab Beginn des Projekts bis zum Ende des durch den Bericht erfassten Berichtszeitraums geleistet wurde, und die wichtigsten bis dahin erzielten Ergebnisse

In the first years of the ERC project, the team ensured that SPIRou was installed at CFHT (see image #2), performing optimally and competitive for the science programmes to be carried out from 2019 onwards, in the framework of NewWorlds in particular through the SLS and SPICE large programmes at CFHT that were allocated 484 CFHT nights over the duration of the project.

Over the duration of NewWorlds, the NewWorlds team (4 staff members, 2 postdocs and 5 PhD studends) worked on 100+ publications, most of them in refereed journals, characterizing the stars that were observed with SPIRou, documenting their magnetic topologies (see image #1) and outlining the discovery of unknown planets.

A SPIRou model at a scale of 1:10 was built by professional model maker "Space Model" (see image #3) to render outreach events more visual and attractive. A 40min documentary was also produced to outline to a large public the main science goals underlying the NewWorlds project, and more generally the quest for habitable exoplanets.

Fortschritte, die über den aktuellen Stand der Technik hinausgehen und voraussichtliche potenzielle Auswirkungen (einschließlich der bis dato erzielten sozioökonomischen Auswirkungen und weiter gefassten gesellschaftlichen Auswirkungen des Projekts)

SPIRou is unarguably the best and only instrument worldwide capable of carrying spectropolarimetry and velocimetry at near-infrared wavelengths at such a high level of precision. Our reference calibrator, the Laser Frequency Comb, is used regularly for our observations. Major discoveries were obtained thanks to NewWorlds and were described in 100+ publications, most of them in refereed journals.

#1: First SPIRou magnetic image of the newly-born star V410Tau in the Taurus nursery (© NewWorlds)

#2: SPIRou during setup at the Canada-France-Hawaii Telescope in 2018 Feb (© S Chastanet, CNRS)

#3: SPIRou model at scale 1:10 for attractive outreach events (© NewWorlds)