Results 31 to 40 of about 8,079,770 (310)
CS LINE PROFILES IN HOT CORES [PDF]
The Astrophysical Journal, 2011 We present a theoretical study of CS line profiles in archetypal hot cores. We provide estimates of line fluxes from the CS(1-0) to the CS(15-14) transitions and present the temporal variation of these fluxes. We find that \textit{i)} the CS(1-0) transition is a better tracer of the Envelope of the hot core whereas the higher-J CS lines trace the ultra-
Bayet, E., Yates, J., Viti, S.
openaire +2 more sources
NLTE Analysis of High-Resolution H-Band Spectra, V: Neutral Sodium
Universe, 2023 In order to derive sodium abundances and investigate the effects of non-local thermodynamic equilibrium (NLTE) on the formation of H-band Na I lines, we update the sodium atomic model by incorporating collision rates with hydrogen from new quantum ...
Zeming Zhou +6 more
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Measuring mass-loss rates and constraining shock physics using X-ray line profiles of O stars from the Chandra archive [PDF]
, 2014 We quantitatively investigate the extent of wind absorption signatures in the X-ray grating spectra of all non-magnetic, effectively single O stars in the Chandra archive via line profile fitting.
D. Cohen +16 more
semanticscholar +1 more source
Iron line profiles in strong gravity [PDF]
Monthly Notices of the Royal Astronomical Society, 2004 10 pages, 13 figures, accepted for pulication in MNRAS, major changes to text, structure and figures, version with high resolution figures available from http://star-www.dur.ac.uk/~krcb/ironline ...
Beckwith, Kris, Done, Chris
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Stark Widths of Yb III and Lu IV Spectral Lines
Atoms, 2019 Rare Earth Elements are important for stellar atmosphere analysis but the corresponding Stark broadening data are scarce. For Yb III and Lu IV theoretical as well as experimental data on Stark broadening parameters of spectral lines are absent in the ...
Milan S. Dimitrijević
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THERMONUCLEAR SUPERNOVAE: PROBING MAGNETIC FIELDS BY POSITRONS AND LATE-TIME IR LINE PROFILES [PDF]
, 2014 We show the importance of γ and positron transport for the formation of late-time spectra in Type Ia supernovae (SNe Ia). The goal is to study the imprint of magnetic fields (B) on late-time IR line profiles, particularly the [Fe ii] feature at 1.644 μm,
R. Penney +2 more
semanticscholar +1 more source
On the stark broadening of Os II spectral lines [PDF]
Bulletin of Natural Sciences Research, 2020 Stark broadening parameters, full widths at half maximum (FWHM) and shifts for 13 Os II lines have been calculated. The plasma parameters are: electron density of 1017 cm-3 and temperatures from 5 000 K to 80 000 K.
Dimitrijević Milan S.
doaj
Line profiles of cores within clusters – III. What is the most reliable tracer of core collapse in dense clusters? [PDF]
, 2014 Recent observational and theoretical investigations have emphasised the importance of filamentary networks within molecular clouds as sites of star formation.
R. Chira +4 more
semanticscholar +1 more source
Stark Broadening and White Dwarfs
Open Astronomy, 2011 White dwarf and pre-white dwarfs are the best types of stars for the application of Stark broadening research results in astrophysics, since in the atmospheres of these stars physical conditions are very favorable for this line broadening mechanism - in ...
Dimitrijević Milan S. +3 more
doaj +1 more source
Electron energy-loss spectroscopy of autoionizing states of zinc [PDF]
Serbian Astronomical Journal, 2004 Autoionizing energy-loss spectra of Zn from 10.8 to 12.5 eV, for incident electron energies between 20 and 100 eV, have been recorded at scattering angles from 0° to 10°.
Predojević B. +4 more
doaj +1 more source