We have searched for shock-excited molecular hydrogen knots in five selected areas of the Chamaeleon I dark cloud using narrow-band images centered on the H_2 line and neighboring continuum. In the northern part of the cloud (Cha IN), we found seven new H_2 knots, five of which are aligned in the direction of a previously known CO molecular bipolar

We present a detailed and uniform study of oxygen abundances in a large set of 155 metal-rich dwarfs. EW measurements were carried out for the [OI] 6300 Å line and the OI triplet, while spectral synthesis was performed for several OH lines. NLTE corrections were calculated and applied to the LTE abundance results derived from the triplet

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AMS (Alpha Magnetic Spectrometer) is a particle detector designed to operate at the International Space Station. Starting in 2008, its purpose is to perform accurate, high statistics, long duration measurements of energetic (0.1 GeV to ˜TeV) charged cosmic ray spectra in space, providing fundamental information about key ingredients in the

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