Sc III spectral properties of astrophysical interest

Oscillator Strengths of Astrophysical Interest

investigation of the electronic properties of carbon and iii-v nanotubes

boron nitride semiconducting zigzag swcnt, $b_{cb}$$n_{cn}$$c_{1-cb-cn}$, as a potential candidate for making nanoelectronic devices was examined. in contrast to the previous dft calculations, wherein just one boron and nitrogen doping configuration have been considered, here for the average over all possible configurations, density of states (dos) was calculated in terms of boron and nitrogen ...

Gaussian Spectral Line Profiles of Astrophysical Masers

Calculations are performed to demonstrate the deviations from Gaussian that occur in the spectral line profiles of a linear maser as a result of the amplification process. Near-Gaussian profiles are presented for bright, interstellar 22 GHz water masers obtained from high resolution Very Long Baseline Array (VLBA) observations of W3 IRS 5. For the profiles to be so close to Gaussian, the calcul...

Identification of carbon forms in soot materials of astrophysical interest

We determined the carbon structures in condensed soot samples of variable C/H ratio by using both scanning and transmission electronmicroscopy.We identified several types of carbon structures. All the samples are formedmainly by “chainlike aggregates” of amorphous grains. A small amount of more ordered forms of carbon is also detected. A “poorly graphitized carbon” is formed on a pre-existing a...

Photodissociation of small carbonaceous molecules of astrophysical interest

Astronomical observations have shown that small carbonaceous molecules can persist in interstellar clouds exposed to intense ultraviolet radiation. Current astrochemical models lack quantitative information on photodissociation rates in order to interpret these data. We here present ab initio multi-reference configurationinteraction calculations of the vertical excitation energies, transition d...