Highlights - Volume 468-2 (June III 2007)

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HIGHLIGHTS: this week in A&A

Volume 468-2 (June III 2007)


A&A special feature

The XMM-Newton extended survey of the Taurus molecular cloud
Table of contents     A&A Press release

This issue of A&A proudly features 15 articles presenting the first results of the XMM-Newton Extended Survey of the Taurus molecular cloud (XEST), which used the most sensitive combination of X-ray instruments presently available, the European Photon Imaging Cameras (EPIC) and the Reflection Grating Spectrometers (RGS), together with the Optical Monitor (OM) onboard the ESA mission XMM-Newton to study the properties of the young stellar population in the cloud.


Modelling the HH30 outflow

A 3-mode variable ejection velocity, precessingjet model for HH30”, by A Esquivel, A.C. Raga, and F. De Colle. A&A 468, p. 613

This paper presents a new computational hydrodynamic model of the HH30 outflow. The authors used a sophisticated computationalfluid code which incorporates a substantial chemical reaction network. Using this approach, they succeed in reproducing the knotty structure of the apparent head of the HH30 jet.


In section 8. Stellar atmospheres

“Behavior of Li abundances in solar-analog stars. Evidence for the line-width dependence”, by Y. Takeda et al. A&A 468, p. 663

The authors study field solar-analog G dwarfs, which are known to show a large dispersion in surface lithium abundances, despite similar stellar parameters. They present an extensive study of Li abundances and their dependence on stellar parameters, carried out for a homogeneous sample of 118 solar analogs. They conclude that stellar angular momentum may play the decisive role in determining the surface Li abundances of solar-analogs.


© Astronomy & Astrophysics 2007