807 datasets found

Keywords: atomic physics

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  • 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...
  • 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...
  • 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...
  • 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...
  • Rotational frequencies of TiO isotopologues

    Pure rotational spectra of the rare isotopologues of titanium oxide, ^46^TiO, ^47^TiO, ^49^TiO, and ^50^TiO, have been recorded using a combination of Fourier transform...
  • Cross sections produced by ^3^He reactions

    The ^3^He abundance in impulsive solar energetic particle (SEP) events is enhanced up to several orders of magnitude compared to its photospheric value of [^3^He]/[^4^He] = 1-3...
  • Rotational spectrum of vinyl formate (CH_2_=CHOCHO)

    Previous detections of methyl and ethyl formate make other small substituted formates potential candidates for observation in the interstellar medium. Among them, vinyl formate...
  • 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-...
  • Transitions of methyl formate toward Orion KL

    We recently reported the first identification of rotational transitions of methyl formate (HCOOCH_3_) in the second torsionally excited state toward Orion Kleinmann-Low (KL),...
  • Absorption spectrum of SO up to 2.5THz

    In order to obtain accurate terahertz center frequencies for SO and its isotopologues, we have studied the absorption spectrum of SO, ^34^SO, and ^33^SO up to 2.5THz using...
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