813 datasets found

Keywords: atomic physics

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  • Swan system of C2

    The C2 Swan system (d ^3^{Pi}g-a ^3^{Pi}u) was observed in emission for the {Delta}v=-3 to {Delta}v=+2 sequences in the 14000-24000cm^-1^ spectral range using a Fourier...
  • Observed transitions of CH_3_OH and CH_3_CHO

    IRAM 30m Observations toward eight protostellar outflow sources were taken in the 96-176GHz range. Transitions of CH_3_OH and CH_3_CHO were detected in seven of them. The...
  • 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...
  • 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...
  • Theoretical charge exchange X-ray cross sections

    The fundamental collisional process of charge exchange (CX) has been established as a primary source of X-ray emission from the heliosphere, planetary exospheres, and supernova...
  • CH_3_OCH_2_OH ALMA detection in NGC 6334I

    We report the detection of interstellar methoxymethanol (CH_3_OCH_2_OH) in Atacama Large Millimeter/submillimeter Array (ALMA) Bands 6 and 7 toward the MM1 core in the high-mass...
  • Electron-impact multiple-ionization cross sections

    We compiled a set of electron-impact multiple-ionization (EIMI) cross section for astrophysically relevant ions. EIMIs can have a significant effect on the ionization balance of...
  • High-resolution FIR spectrum of anti-vinyl alcohol

    We report a detailed analysis of the high-resolution far-infrared spectrum of anti-vinyl alcohol, which has been previously identified toward Sagittarius B2(N). The {nu}15 OH...
  • X-ray line ratios for diverse ion collisions

    Charge exchange (CX) has emerged in X-ray emission modeling as a significant process that must be considered in many astrophysical environments- particularly comets. Comets host...
  • Atomic mass excesses

    X-ray burst model predictions of light curves and the final composition of the nuclear ashes are affected by uncertain nuclear masses. However, not all of these masses are...
  • A^3^{Pi}-X^3^{Sigma}^-^ transitions of OH+

    The OH^+^ ion is of critical importance to the chemistry in the interstellar medium and is a prerequisite for the generation of more complex chemical species. Submillimeter and...
  • methoxy radical (CH_3_O) rotational spectrum

    The methoxy radical (CH_3_O) has recently been detected in the interstellar medium and may be an important tracer of methanol-related chemistry in cold sources. Despite its...
  • Behavior of heavy elements in H-He-Z mixtures

    The core-accretion model for giant planet formation suggests a two-layer picture for the initial structure of Jovian planets, with heavy elements in a dense core and a thick...
  • IR spectrum of protonated ovalene (7-C_32_H_15_^+^)

    The mid-infrared emission from galactic objects, including reflection nebulae, planetary nebulae, proto-planetary nebulae, molecular clouds, etc, as well as external galaxies,...
  • 3600-24700{AA} deep X-shooter spectrum of HH 1

    We present deep spectroscopic (3600-24700{AA}) X-shooter observations of the bright Herbig-Haro object HH 1, one of the best laboratories to study the chemical and physical...
  • Empirical methane (CH_4_) line list

    Hot methane is found in many "cool" sub-stellar astronomical sources including brown dwarfs and exoplanets, as well as in combustion environments on Earth. We report on the...
  • CH_3_NCO (methyl isocyanate) transition frequencies

    A new interstellar molecule, CH_3_NCO (methyl isocyanate), has been detected using the 12m telescope of the Arizona Radio Observatory (ARO). CH_3_NCO was identified in spectra...
  • Collision strengths in FeIX

    Collision strengths and thermally averaged collision strengths for a large number of extreme-ultraviolet lines of FeIX arising by electron impact have been reported. The...
  • Methyl acetate (CH_3_COOCH_3_) rotational transitions

    Methyl acetate (CH_3_COOCH_3_) has been recently observed by the IRAM 30m radio telescope in Orion, though the presence of its deuterated isotopomers is yet to be confirmed. We...
  • Transition frequencies of MN and DMN

    High-resolution pure rotational spectra of four alkylnaphthalenes were measured in the range of 6-15GHz using a molecular-beam Fourier-transform microwave spectrometer. Both a-...
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