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Apr 07, 2014

The PLATO Simulator: modelling of high-precision high-cadence space…

Many aspects of the design trade-off of a space-based instrument and its performance can best be tackled through simulations of the expected observat…
Jul 07, 2014

We have shown that numerical models can be used to reproduce the bow shocks of massive stars. These models can also be used to investigate the effect of physical phenomena, such as magnetic fields and the presence of dust grains, which can influence…

Using numerical models of bow shocks to investigate the circumstellar…

Many massive stars travel through the interstellar medium at supersonic speeds. As a result they form bow shocks at the interface between the stellar…
Oct 08, 2013

Binaries discovered by the MUCHFUSS project; FBS 0117+396: An sdB+dM …

The project Massive Unseen Companions to Hot Faint Underluminous Stars from SDSS (muchfuss) aims to discover subdwarf-B stars with massive compact co…
Jan 13, 2010

870 um observations of evolved stars with LABOCA

During their evolution, Asymptotic Giant Branch (AGB) stars experience a high mass-loss which leads to the formation of a Circumstellar Envelope (CSE…
Feb 26, 2014

On the structure of the transition disk around TW Hya

For over a decade, the structure of the inner cavity in the transition disk of TW Hydrae has been a subject of debate. Modeling the disk with data ob…
Jan 21, 2011

First Kepler results on compact pulsators VI. Targets in the final ha…

We present results from the final six months of a survey to search for pulsations in white dwarfs and hot subdwarf stars with the Kepler spacecraft. …
Oct 21, 2013
Artificial Intelligence
Software Engineering

A practical approach to ontology-enabled control systems for astron…

Even though modern service-oriented and data-oriented architectures promise to deliver loosely coupled control systems, they are inherently brittle a…
Feb 14, 2013

Regular frequency patterns in the young delta Scuti star HD 261711 …

We concentrate on an asteroseismological study of HD 261711, a rather hot delta Scuti type pulsating member of the young open cluster NGC 2264 locate…
Jul 19, 2010

First Kepler results on compact pulsators I. Survey target selection …

We present results from the first two quarters of a survey to search for pulsations in compact stellar objects with the Kepler spacecraft. The survey…
Aug 30, 2013

An interferometric study of the post-AGB binary 89 Herculis I Spatial…

Binary post-AGB stars are interesting laboratories to study both the evolution of binaries as well as the structure of circumstellar disks. A multiwa…
May 30, 2007

Direct diameter measurement of a star filling its Roche Lobe: The s…

Stellar evolution in close binary systems is strongly influenced by mass transfer from one star to the other when one component fills its zero-veloci…
Jun 22, 2010

2M1938+4603: A rich, multimode pulsating sdB star with an eclipsing d…

2M1938+4603 (KIC 9472174) displays a spectacular light curve dominated by a strong reflection effect and rather shallow, grazing eclipses. The orbita…
Aug 04, 2015

On the shape of core overshooting in stellar model computations, and …

Slowly pulsating B stars (SPB) and $\gamma$ Dor stars pulsate in high-order gravity (g-) modes. The frequencies of g-modes are sensitive to the detai…
Aug 07, 2013

The Age and The Mass of The αHerculis Triple-Star System From A MES…

\alpha^1 Her is the second closest Asymptotic Giant Branch (AGB) star to the Sun, and the variable luminous M5 Ib-II member of a triple stellar syste…
Jul 29, 2010

FLAMINGOS Near Infra-Red Survey of The Serpens Cloud Main Core

We obtained JHK images and low-resolution JH spectra in the embedded young cluster in the Serpens cloud Main core (also known as Serpens North). We d…
Mar 20, 2012

Post-AGB stars in the SMC as tracers of stellar evolution: the extrem…

By virtue of their spectral types, favourable bolometric corrections as well as their constrained distances, post-AGB stars in external galaxies offe…
Oct 29, 2009

Chemical depletion in the Large Magellanic Cloud: RV Tauri stars and …

Aims: By studying the photospheric abundances of 4 RV Tauri stars in the LMC, we test whether the depletion pattern of refractory elements, seen in s…
Nov 01, 2012

Constraining the core-rotation rate in red-giant stars from Kepler sp…

Rotation plays a key role in stellar structure and its evolution. Through transport processes which induce rotational mixing of chemical species and …
May 26, 2015

Tight asteroseismic constraints on core overshooting and diffusive …

KIC 10526294 is a very slowly rotating and slowly pulsating late B-type star. Its 19 consecutive dipole gravity modes constitute a series with almost…
Sep 23, 2011

Observing Compact Disks Inside Pre-Planetary Nebulae with the Very La…

AGB stars appear to lose mass spherically, but many PNe resulting from the AGB mass-loss have non-spherical morphologies. Compact disks have been fou…
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