منابع مشابه
Adsorption of Phosphine on a BN Nanosurface
Electrical sensitivity of a Boron Nitride Nano Sheet (BNNS) to phosphine (PH3) molecule is studied using Density Functional Theory (DFT) calculations at the B3LYP/6-31G(d) level of theory. The adsorption energy (Ead) of phosphine on the surface of the pristine Nanosheet is about -678.96×1019eV. Pristine BNNS is a suitable adsorbent for phosphine and can be u...
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Organocatalysts have attracted enormous interest in the water-crosslinking reaction in silane-grafted polyolefins (SGPOs) system owing to their simplicity, low toxicity and environmentally benign nature compared to organotin catalysts, which are most used in SGPOs system. We focus on organophosphorus compounds including four structure types as organocatalysts; phosphoric acids, phosphoric ester...
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Circumstellar masers are unique tools for probing the envelopes around low mass dying stars using VLBI. In this contribution I briefly review the status of our knowledge on these emissions, especially focusing on the latest results obtained by means of VLBI observations. I also outline some of the new windows that will open for VLBI maser research thanks to the upcoming new instrumentation.
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We investigate the microlensing effects on a source star surrounded by a circumstellar disk, as a function of wavelength. In the midand far-infrared, where the emission of the system is dominated by the cold dusty disk, the microlensing light curve encodes the geometry and surface brightness profile of the disk. For a system located at the Galactic center, we find typical magnifications to be o...
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The circumstellar masers around evolved stars offer an interesting possibility to measure stellar parameters through VLBI astrometry. In this paper the application of this technique is discussed, including the accuracy and the uncertainties of the method. The different maser species (OH, H2O, SiO) have slightly different characteristics and applications. This paper does not concern astrometry o...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2014
ISSN: 2041-8205,2041-8213
DOI: 10.1088/2041-8205/790/2/l27