Concept

Système solaire

Publications associées (107)

CISBAT 2009: International Scientific Conference - Renewables in a changing climate - From Nano to Urban Scale

Centred on research and development in solar energy applications to the built environment, the international conference CISBAT 2009 highlighted a large number of interesting technological innovations. The discoveries and developments presented by scientist ...

EPFL2009

The origin of short-lived radionuclides and the astrophysical environment of solar system formation

Anders Meibom

Based on early solar system abundances of short-lived radionuclides (SRs), such as Al-26 (T-1/2 = 0.74 Myr) and Fe-60 (T-1/2 1.5 Myr), it is often asserted that the Sun was born in a large stellar cluster, where a massive star contaminated the protoplaneta ...

2008

Membership and binarity of solar-type dwarfs in the nearby open cluster Alpha Persei (Mel 20)

Jean-Claude Mermilliod

Context. The Alpha Persei open cluster (Melotte 20) is one of the nearby clusters (d < 500 pc) for which a long-term systematic radial-velocity monitoring of the solar-type stars has not been published so far. ...

2008

Membership, binarity, and rotation of red dwarfs in the nearby open cluster Coma Berenices (Melotte 111)

Jean-Claude Mermilliod

Context. Although several attempts have been made to identify solar-type members on the main sequence of the nearby open cluster Coma Berenices (Mel 111), the population of the lower main sequence is still poorly known. ...

2008

Nitrogen and carbon isotopic composition of the Sun inferred from a high-temperature solar nebular condensate

Anders Meibom, François Robert

We report high-precision measurements of nitrogen and carbon isotopic compositions of a carbon-bearing titanium-nitride (osbornite) in a calcium-aluminum-rich inclusion (CAI) from the CH/CB-like carbonaceous chondrite Isheyevo. The mineralogy and petrograp ...

2007

The oxygen isotopic composition of the Sun as a test of the supernova origin of Al-26 and Ca-41

Anders Meibom

Short-lived radionuclides were present in the solar protoplanetary disk in abundances much higher than in the ambient interstellar medium and require a last minute origin. Al-26 (T-1/2 = 0.73 Myr) and Ca-41 (T-1/2 = 0.1 Myr) abundances in the protoplanetar ...

2007

Production and properties of substituted LaFeO3-perovskite tubular membranes for partial oxidation of methane to syngas

Jan Van Herle, Stefan Diethelm, Defne Bayraktar

Tubular membranes of La0.6Ca0.4Fe0.75Co0.25O3−δ and La0.5Sr0.5Fe1−yTiyO3−δ (y = 0, 0.2) for the application of partial oxidation of methane to syngas were produced by thermoplastic extrusion and investigated by oxygen permeation measurements. The optimum c ...

2007

Elemental compositions of comet 81P/Wild 2 samples collected by Stardust

Philippe Gillet

We measured the elemental compositions of material from 23 particles in aerogel and from residue in seven craters in aluminum foil that was collected during passage of the Stardust spacecraft through the coma of comet 81P/Wild 2. These particles are chemic ...

2006

Ad-hoc wireless sensor networks for exploration of solar-system bodies

Herbert Shea

In this work, we evaluate the exploration of the solar system by ad-hoc wireless sensor networks (WSN), i.e. networks where all nodes (either moving or stationary) can both provide and relay data. The two aspects of self-organization and localization are t ...

2006

Entre un parc et la ville. Intégration d'habitations contemporaines dans un paysage. Logements à l'avenue de Provence (Lausanne, VD)

Julie Casson

La diminution généralisée des personnes composant un ménage et la demande toujours croissante en surface habitable poussent la ville à s'étendre continuellement au-delà de ses limites. Dans ce contexte, il faut considérer la densification des parcelles enc ...

2006

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