ASTRONOMY AND ASTROPHYSICS Amplitude monitoring of the β Cephei star 16 Lacertae

Astronomy & Astrophysics Interpretation of the variability of the β Cephei star λ Scorpii I . The multiple character ,

We derive accurate values of the orbital parameters of the close binary β Cephei star λ Scorpii. Moreover, we present the first determination of the properties of the triple system to which λ Scorpii belongs. Our analysis is based on a time series of 815 high-resolution spectra, covering a timespan of 14 years. We find a close orbit of 5. d9525 days (e = 0.26) and a wide orbit of approximately ...

Kepler Monitoring of an L Dwarf I . The Photometric Period and

We report on the results of fifteen months of monitoring the nearby field L1 dwarf WISEP J190648.47+401106.8 (W1906+40) with the Kepler mission. Supporting observations with the Karl G. Jansky Very Large Array and Gemini North telescope reveal that the L dwarf is magnetically active, with quiescent radio and variable Hα emission. A preliminary trigonometric parallax shows that W1906+40 is at a ...

Evolution of Magnetic Fields in High Mass Star Formation: Linking field geometry and collapse for the W51 e2/e8 cores

Evolution of Magnetic Fields in High Mass Star Formation: Linking field geometry and collapse for the W51 e2/e8 cores Ya-Wen Tang Department of Physics, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan & Academia Sinica Institute of Astronomy and Astrophysics, P. B. Box 23-141, Taipei 10617,Taiwan Paul T. P. Ho Academia Sinica Institute of Astronomy and Astrophysi...

Seismology of solar spicules based on Hinode/SOT observations

The Effect of Solar Particles in the Choice of Alloy Shielding in a Satellite

The damages and logical failures in dierent parts of a satellite may occur during a solar event, when a bulk of solar energetic particles approaching the Earth. During solar events, these particles may cause extensive damages which are even permanent (hard errors). A way of damage reduction is designing a proper coating as the fuselage. As protons are the major component of solar particles and ...