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Article
Large granulation cells on the surface of the giant star π1 Gruis
Interferometric images of the surface of the giant star π1 Gruis reveal few but large convective cells, consistent with existing models of stellar surface convection.
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Article
The temperature and chronology of heavy-element synthesis in low-mass stars
Spectrographically obtained zirconium, niobium and technetium abundances in a sample of low-mass stars of type S are used to determine that, in these stars, heavy elements are synthesized by the slow-neutron-c...
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Article
Discovery of three lead-rich stars
About half of the stable nuclei heavier than iron are believed to be synthesized during the late stages of evolution of stars with masses in the range 0.8–8 solar masses. These elements are then expelled into ...
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Chapter
Chemically-Peculiar Red Giants: Uncovering the Binary Intruders
It is now widely recognised that peculiar red giants such as S stars are overgrown with “extrinsic” stars. Those binary masqueraders share the same abundance peculiarities as the prototypes of their spectral f...
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Chapter
Tomography of the Atmosphere of Long-Period Variable Stars
This paper presents a new tomographic technique to derive the velocity feld across the atmosphere of long-period variable (LPV) stars. The method crosscorrelates the optical spectrum with numerical masks const...
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Article
Is amino-acid homochirality due to asymmetric photolysis in space?
It is well known that the amino acids occurring in proteins (natural amino acids) are, with rare exceptions, exclusively of the L-configuration. Among the many scenarios put forward to explain the origin of th...
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Chapter
The impact of Semi-Convection and Overshooting on the Surface Abundances in Massive Stars
We analyse the effects of semi-convection and overshooting on the predicted surface abundances after the first and second dredge-ups in 15 and 20 M⊙Pop. I stars. Overshooting is applied either to the core boun...
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Chapter
Long-Term Variability of Barium and S Stars
Chemically-peculiar red giants are ideal targets for long-term monitorings, since these binary stars have periods ranging from a few months to more than 10 years. The results of the monitoring of a sample of b...
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Article
The impact of semi-convection and overshooting on the surface abundances in massive stars
We analyse the effects of semi-convection and overshooting on the predicted surface abundances after the first and second dredge-ups in 15 and 20 M⊙ Pop. I stars. Overshooting is applied either to the core bounda...
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Chapter
A Parametrized Study of the 13C(α,n)16O Neutron Source
After briefly reviewing the astrophysics) sites where protons could be mixed into He- and C-rich layers, we present the main features of the neutron processing resulting from that mixing. Those are used as a g...
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Article
Über den Nachweis von Veronal (Diäthylbarbitursäure)
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Article
Über eine Sparteïnreaktion
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Article
Zum Nachweis von freiem β-Naphtol in Benzonaphtol
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Article
Der Nachweis von Peroxyden im Äther
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Article
Eine Unterscheidung von α- und β-Naphtol
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Article
Den Nachweis der Zimmtsäure
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Article
Eine charakteristische Reaction für Apiol
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Article
Nachweis von Formaldehyd, insbesondere in der Milch
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Article
Zum Nachweis des Dulcins in Getränken
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Article
Nachweis von Mineralsäuren neben organischen Säuren
