Lorentz–Lorenz Coefficient of Ice Molecules of Astrophysical Interest: N2, CO2, NH3, CH4, CH3OH, C2H4, and C2H6

2021 ◽  
Vol 906 (2) ◽  
pp. 81
Author(s):  
M. Domingo ◽  
R. Luna ◽  
M. Á. Satorre ◽  
C. Santonja ◽  
C. Millán
Keyword(s):  
Astrophysical Interest

Recent Radiative and Collisional Atomic Data of Astrophysical Interest

1988 ◽  
Vol 102 ◽  
pp. 129-132
Author(s):  
K.L. Baluja ◽  
K. Butler ◽  
J. Le Bourlot ◽  
C.J. Zeippen
Keyword(s):  
Mass Production ◽  
Bound States ◽  
Physical Models ◽  
Impact Excitation ◽  
Electron Impact Excitation ◽  
Atomic Data ◽  
Isoelectronic Sequence ◽  
Astrophysical Interest ◽  
Radiative Transitions ◽  
Forbidden Transitions

SummaryUsing sophisticated computer programs and elaborate physical models, accurate radiative and collisional atomic data of astrophysical interest have been or are being calculated. The cases treated include radiative transitions between bound states in the 2p4and 2s2p5configurations of many ions in the oxygen isoelectronic sequence, the photoionisation of the ground state of neutral iron, the electron impact excitation of the fine-structure forbidden transitions within the 3p3ground configuration of CℓIII, Ar IV and K V, and the mass-production of radiative data for ions in the oxygen and fluorine isoelectronic sequences, as part of the international Opacity Project.

RECENT RADIATIVE AND COLLISIONAL ATOMIC DATA OF ASTROPHYSICAL INTEREST

1988 ◽  
Vol 49 (C1) ◽  
pp. C1-129-C1-132 ◽  
Author(s):  
K. L. BALUJA ◽  
K. BUTLER ◽  
J. LE BOURLOT ◽  
C. J. ZEIPPEN
Keyword(s):  
Atomic Data ◽  
Astrophysical Interest

Forbidden Transitions of Astrophysical Interest in Fluorine‐like Ions

1998 ◽  
Vol 505 (2) ◽  
pp. 1007-1009 ◽  
Author(s):  
A. K. Das ◽  
P. K. Mukherjee
Keyword(s):  
Astrophysical Interest ◽  
Forbidden Transitions

scholarly journals Sc III spectral properties of astrophysical interest

2011 ◽  
Vol 44 (22) ◽  
pp. 225701 ◽  
Author(s):  
D K Nandy ◽  
Y Singh ◽  
B K Sahoo ◽  
C Li
Keyword(s):  
Spectral Properties ◽  
Astrophysical Interest

The Rotational Spectrum of Monothioformic Acid. I. cis-and trans-HC(:O)SH1,2

1976 ◽  
Vol 31 (5) ◽  
pp. 422-437
Author(s):  
William H. Hocking ◽  
Gisbert Winnewisser
Keyword(s):  
Frequency Region ◽  
Absorption Lines ◽  
Rotational Spectrum ◽  
Centrifugal Distortion ◽  
Astrophysical Interest ◽  
Rotational Spectra ◽  
Measured Line ◽  
Centrifugal Distortion Constants ◽  
Cis And Trans ◽  
Line Positions

Abstract The rotational spectra of the two abundant isomers of monothioformic acid, cis- and trans- HC(:O)SH, have been assigned in the frequency region 8 -250 GHz. Over 90 a-type transitions and over 60 b-type transitions have been measured for each rotamer. The a-type transitions belong to the qRK , qQ1, qQ2, qQ3 and qQ4 branches and the b-type absorption lines encompass the Ka = 1 - 0, 2 - 1, 3 - 2, 4 - 3 and 5 - 4 rotational sub-bands. The rotational constants and all quartic and sextic centrifugal distortion constants have been determined for each rotamer using Watson's reduced Hamiltonian. In addition to the measured line positions the frequencies of some selected low-J transitions, not observed in this work but of potential astrophysical interest, have been listed as an aid in the interstellar search for monothioformic acid.

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