Correlation between technetium and lithium in a sample of oxygen-rich AGB variables (2009)
Uttenthaler, Stefan, Lebzelter, Thomas
The aims of this paper are: 1) to revisit the Tc content of a sample of oxygen-rich asymptotic giant branch (AGB) variables and 2) to increase the number of such stars for which the Li abundance has...
The fluorine abundance in a Galactic Bulge AGB star measured from CRIRES spectra (2008)
Uttenthaler, Stefan, Lebzelter, Thomas, Aringer, Bernhard, Käufl, Hans-Ulrich, Siebenmorgen, Ralf, Smette, Alain
We present measurements of the fluorine abundance in a Galactic Bulge Asymptotic Giant Branch (AGB) star. The measurements were performed using high resolution K-band spectra obtained with the CRIRES...
Low-mass lithium-rich AGB stars in the Galactic bulge: evidence for Cool Bottom Processing? (2007)
Uttenthaler, Stefan, Lebzelter, Thomas, Palmerini, Sara, Busso, Maurizio, Aringer, Bernhard, Lederer, Michael T.
Context: The stellar production of the light element lithium is still a matter of debate. Aims: We report the detection of low-mass, Li-rich Asymptotic Giant Branch (AGB) stars located in the...
Siebenmorgen, Ralf, Smette, Alain, Käufl, Hans Ulrich, Seifahrt, Andreas, Uttenthaler, Stefan, Bik, Arjan, ...
Technetium and the third dredge up in AGB stars II. Bulge stars (2006)
Uttenthaler, Stefan, Hron, Josef, Lebzelter, Thomas, Busso, Maurizio, Schultheis, Mathias, Kaeufl, Hans Ulrich
We searched for Technetium (Tc) in a sample of bright oxygen-rich asymptotic giant branch (AGB) stars located in the outer galactic bulge. Tc is an unstable element synthesised via the s-process in...
The wave nature of biomolecules and fluorofullerenes (2003)
Hackermueller, Lucia, Uttenthaler, Stefan, Hornberger, Klaus, Reiger, Elisabeth, Brezger, Bjoern, Zeilinger, Anton, ...
We demonstrate quantum interference for tetraphenylporphyrin, the first biomolecule exhibiting wave nature, and for the fluorofullerene C60F48 using a near-field Talbot-Lau interferometer. For the...
Collisional decoherence observed in matter wave interferometry (2003)
Hornberger, Klaus, Uttenthaler, Stefan, Brezger, Bjoern, Hackermueller, Lucia, Arndt, Markus, Zeilinger, Anton
We study the loss of spatial coherence in the extended wave function of fullerenes due to collisions with background gases. From the gradual suppression of quantum interference with increasing gas...