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Effective collision strengths for Fe XI trans.
Collision strengths for transitions among the lowest 48 fine-structure levels belonging to the (1s^2^2s^2^2p^6^) 3s^2^3p^4^, 3s3p^5^, 3s^2^3p^3^3d and 3p^6^ configurations of Fe... -
Co III electron-impact broadening parameters
In hot star atmospheres, the Stark broadening mechanism is the main pressure broadening mechanism. An interesting application where such a mechanism is of interest is the... -
Vinylacetylene millimeter-wave spectrum
The pure rotational spectrum of the hydrocarbon vinylacetylene in its ground vibrational state has been investigated from 80 to 165 GHz, covering the rotational quantum numbers... -
M1 and E2 emission lines in K-like ions
Relativistic Quantum Defect Orbital (RQDO) calculations of transition probabilities for E2 (electric quadrupole) and M1 (magnetic dipole) forbidden transition in the potassium... -
NII effective recombination coefficients
We calculate effective recombination coefficients for the formation of selected lines of NII. New photoionization data are computed which accurately map the near threshold... -
N-like and O-like Breit-Pauli energy levels
Breit-Pauli results for energy levels, lifetimes, and Lande g_J_ factors have been determined for all levels up to 2p^2^ 3d of the nitrogen-like sequence (Z=7-17) and 2p^3^ 3d... -
Fe II transition probabilities and loggf
We report measurements of the relative intensities of 81 emission lines of Fe II between 160nm and 350nm (62168cm^-1^ to 28564cm^-1^) from 4 levels by high resolution Fourier... -
Diatomic molecules collisional rates
A number of diatomic molecules have been found in vibrationally excited states in several cosmic objects. The molecules in vibrationally excited states provide valuable... -
Einstein A-coefficients for C_3_H_4_
Following tentative detection of cyclopropene (C_3_H_4_) in Sgr B2 through its transition 3_22_-2_21_, several attempts to confirm the presence of cyclopropene in astronomical... -
Line ratios for helium-like ions
The tables include data concerning six He-like ions: wavelengths, transition probabilities, wavelengths at which the radiation temperatures should be determined. Line ratios (G... -
Forbidden transitions in Co(16+)
Theoretical line strengths and transition probabilities for electric quadrupole (E2) transitions between levels belonging to several important configurations of Co16+ are... -
IRON Project L
Effective collision strengths for transitions between 92 fine structure states calculated in a Breit-Pauli approximation are provided in ups.dat. Results are provided for log T... -
IRON Project XLIX
Effective collision strengths for transitions between 86 fine structure states calculated in a Breit-Pauli approximation are provided in ups.dat. Results are provided for log T... -
Fe XII UV line intensity ratios
A new set of radiative and electron collisional data for Fe XII was presented in two earlier papers. In the present work, we derive level populations and theoretical line... -
Zr II & III electron-impact broadening parameters
The electron-impact widths for 30 Zr III lines were calculated using the modified semi-empirical (MSE) method. For two Zr II and four Zr III astrophysically important UV lines,... -
IRON Project. XLVII. Ni III
This paper reports R-matrix calculations of electron impact excitation rates for Ni III. The calculation includes 70 LS terms corresponding to the configurations 3d^8^, 3d^7^4s,... -
Fe XXIII fine structure level oscillator strengths
We tabulate theoretical line strengths, f-values and transition energies for the beryllium-like ion Fe XXIII. Transitions are between levels 2l_1_2l_2_S'L'J' and 2l_3_nl_4_SLJ... -
Ortho:para-H2 ratio in C and J shocks
Tables 2a-f and 4a-f contain an extensive set of parameters derived from our grid of C-type (tables 2a-f) and J-type (tables 4a-f) planar stationary shock models. Models of... -
Solar abundance of iron
Numerous papers on the solar photospheric abundance of iron have recently been published leading to a longstanding debate concerning rather different results obtained from the... -
Uncertainties in r-abundance distribution
Tables 1&2 correspond to the first estimate of the error factors affecting the {beta} decay rates of highly ionized heavy atoms in stellar environments. The uncertainties in...
