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Chandra observations of coronal emission from the early-G supergiants Alpha and Beta Aquarii
(University of Colorado, 2005)We report Chandra detections of coronal X-rays from the early-G supergiants ? Aquarii (HD209750: G2 Ib) and ? Aquarii (HD204867: G0 Ib). Previous ROSAT observations of these archetype \hybrid chromosphere" stars were ... -
Coronal Mass Ejection Detection using Wavelets, Curvelets and Ridgelets: Applications for Space Weather Monitoring
(2011)Coronal mass ejections (CMEs) are large-scale eruptions of plasma and magnetic field that can produce adverse space weather at Earth and other locations in the Heliosphere. Due to the intrinsic multiscale nature of features ... -
Mg I emission lines at 12 and 18?m in K giants
(EDP Sciences, 2008)Context. The solar mid-infrared metallic emission lines have already been observed and analyzed well, and the formation scenario of the Mg I 12 $\rm\mu$m lines has been known for more than a decade. Detections of stellar ... -
Recent developments in planetary Aeolian studies and their terrestrial analogs
(2013)This paper summarizes the many advances that have been made in the study of planetary Aeolian processes that have taken place since the first Planetary Dunes Workshop was held in May of 2008, through 2011. Many of the ... -
Solvent effect on the nonlinear absorption of 5,10-A2B2 meso substituted porphyrins
(2013)The effect of the solvent on the nonlinear absorptive properties of two series of 5,10-A 2 B 2 porphyrins was investigated with an open Z-scan technique in the ns time regime. The recorded responses, which varied between ... -
Water vapor on Betelgeuse as revealed by TEXES high-resolution 12 micron spectra
(American Astronomical Society, 2006)The outer atmosphere of the M supergiant Betelgeuse is puzzling. Published observations of different kinds have shed light on different aspects of the atmosphere, but no unified picture has emerged. They have shown, for ... -
Water vapor on supergiants. The 12 micron TEXES spectra of ? Cephei
(American Astronomical Society, 2006)Several recent papers have argued for warm, semidetached, molecular layers surrounding red giant and supergiant stars, a concept known as a MOLsphere. Spectroscopic and interferometric analyses have often corroborated this ...