809 datasets found

Keywords: atomic physics

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  • Stark broadening of PbIV spectral lines

    Using a semi-empirical approach, we report in this paper calculated values of the Stark broadening parameters for 58 lines of PbIV. They were calculated using a set of...
  • (De)excitation rates of ortho-NH3 and para-NH3

    Ammonia inversion lines are often used as probes of the physical conditions in the dense ISM. The excitation temperature between the first two para metastable (rotational)...
  • FeIV energy levels & transition prob.

    Multiconfiguration Dirac-Hartree-Fock electric quadrupole (E2) and magnetic dipole (M1) transition probabilities are reported for transitions between levels of 3d^5^ in [FeIV]....
  • Oscillator strengths for lines in J & H bands

    We have built a line list in the near-infrared J and H bands (1.00-1.34, 1.49--1.80 {mu}m) by gathering a series of laboratory and computed line lists. Oscillator strengths and...
  • Excitation rate coefficients for O III

    Collision strengths for fine-structure transitions among the levels of the (1s^2^) 2s^2^2p^2^, 2s2p^3^, 2p^4^, 2s^2^2p3s, 2s^2^2p3p, and 2s^2^2p3d configurations of O III have...
  • Electron impact excitation in Fe XI

    Collision strengths for electron impact excitation of fine-structure levels in sulfur-like Fe XI are calculated in a semirelativistic R-matrix approach. The 38 fine-structure...
  • Oscillator Strengths for SiVI

    The weighted oscillator strengths (gf) and the lifetimes for Si VI presented in this work were carried out in a multiconfiguration Hartree-Fock relativistic (HFR) approach. In...
  • Oscillator Strengths and Radiative Rates for FeXV

    We report oscillator strengths and radiative decay rates for 1108 optically allowed and intercombination transitions among the lowest 87 fine-structure energy levels of Fe XV....
  • Catalog of neutrino emissions

    A recent time-integrated analysis of a catalog of 110 candidate neutrino sources revealed a cumulative neutrino excess in the data collected by IceCube between 2008 April 6 and...
  • Oscillator strength ref. for Indus_0 & Indus_13

    The recently discovered Indus stellar stream exhibits a diverse chemical signature compared to what is found for most other streams due to the abundances of two outlier stars,...
  • IR high-res. sp. of hot cores of AFGL2591 & AFGL2136

    We have performed a high-resolution 4-13{mu}m spectral survey of the hot molecular gas associated with the massive protostars AFGL 2591 and AFGL 2136, utilizing the Echelon...
  • Properties of atomic lines in 51 Oph UV spectra

    We measured 304 absorption features in the ultraviolet and visible spectra of the star 51 Oph, which is known to have a debris disk with a high inclination. We analyzed the...
  • Magnetic field measurements of Ap/Bp stars

    We report on magnetic field measurements of 157 chemically peculiar A/B stars (Ap/Bp) based on resolved, magnetically split absorption lines present in H-band spectra provided...
  • Cosmic-ray nuclei studies with Voyager, ACE & AMS-02

    The acceleration of cosmic-ray particles and their propagation in the Milky Way and the heliosphere tangle with each other, leading to complexity and degeneracy of the modeling...
  • A^1^{Pi}-X^1^{Sigma}^+^ transitions of CO study

    Highly correlated ab initio calculations were performed for an accurate determination of the A^1^{Pi}-X^1^{Sigma}^+^ system of the CO molecule. A highly accurate multi-reference...
  • Improved A^3^{Pi}-X^3^{Sigma}^-^ transitions of OH+

    Molecular ions are key reaction intermediates in the interstellar medium. OH+ plays a central role in the formation of more complex chemical species and for estimating the...
  • Transition frequencies of ethanimine (CH_3_CHNH)

    Ethanimine, a possible precursor of amino acids, is considered an important prebiotic molecule and thus may play important roles in the formation of biological building blocks...
  • Cosmic-ray nucleosynthesis of p-nuclei

    We investigate the cosmic-ray nucleosynthesis (CRN) of proton-rich stable nuclides (p-nuclides). We calculate the cosmic-ray (CR) energy spectra of heavy nuclides with mass...
  • Nucleosynthesis of p nuclides

    The production of the heavy stable proton-rich isotopes between ^74^Se and ^196^Hg-the p nuclides-is due to the contribution from different nucleosynthesis processes, activated...
  • 1-(Z)-1-propanimine rotational transitions

    We consider six isomeric groups (CH_3_N, CH_5_N, C_2_H_5_N, C_2_H_7_N, C_3_H_7_N, and C_3_H_9_N) to review the presence of amines and aldimines within the interstellar medium...
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