Results 11 to 20 of about 1,340,272 (265)

A new model for the structure of the DACs and SACs regions in the Oe and Be stellar atmospheres [PDF]

, 2007
In this paper we present a new mathematical model for the density regions where a specific spectral line and its SACs/DACs are created in the Oe and Be stellar atmospheres.
Antoniou, A., Danezis, E., Dimitrijević, M. S., Lyratzi, E., Nikolaidis, D., Popović, L. Č., Theodosiou, E.   +6 more
core   +1 more source

A representative sample of Be stars III: H band spectroscopy [PDF]

, 1999
We present H band (1.53 - 1.69 micron) spectra of 57 isolated Be stars of spectral types O9-B9 and luminosity classes III,IV & V. The HI Brackett (n-4) series is seen in emission from Br 11-18, and FeII emission is also apparent for a subset of those ...
Clark, Dougherty, Gehrz, Hamann, Hanson, Hanson, Hanuschik, Hony, Howells, I. A. Steele, J. S. Clark, Koornneef, Marlborough, Millar, Porter, Quirrenbach, Scargle, Stee, Steele, Storey   +19 more
core   +5 more sources

Precise measurements of the wavelength in KrCl laser spectral region (222 nm)

Semiconductor Physics, Quantum Electronics & Optoelectronics, 2016
The technique for precise measurements of wavelengths in the range around 222 nm (45030 cm–1) has been presented. The reciprocal linear dispersion of the spectrometer was 0.529 Å/mm.
N.G. Zubrilin
doaj   +1 more source

the SDSS-III APOGEE Spectral Line List for H-Band Spectroscopy [PDF]

, 2015
We present the H-band spectral line lists adopted by the Apache Point Observatory Galactic Evolution Experiment (APOGEE). The APOGEE line lists comprise astrophysical, theoretical, and laboratory sources from the literature, as well as newly evaluated ...
Bizyaev, D., Chojnowski, D., Cunha, K., Garcia-Hernandez, D. A., Holtzman, J., Johnson, J. A., Koesterke, L., Lawler, James E., Majewski, S., Meszaros, S., Perez, A. E. G., Prieto, Carlos Allende, Shetrone, Matthew, Smith, V. V., Sobeck, J., Souto, D., Zamora, O., Zasowski, G.   +17 more
core   +2 more sources

Spectral Line Shapes of He I Line 3889 Å

Atoms, 2014
Spectral line shapes of neutral helium 3889 Å(23S–33P) transition line are calculated by using several theoretical methods. The electronic contribution to the line broadening is calculated from quantum statistical many-particle theory by using ...
Banaz Omar, Manuel Á. González, Marco A. Gigosos, Tlekkabul S. Ramazanov, Madina C. Jelbuldina, Karlygash N. Dzhumagulova, Mark C. Zammit, Dmitry V. Fursa, Igor Bray   +8 more
doaj   +1 more source

Spectral Line Shapes in Plasmas II

Atoms, 2019
The Spectral Line Shapes in Plasmas (SLSP) code comparison workshop series [...]
Evgeny Stambulchik, Annette Calisti, Hyun-Kyung Chung, Manuel Á. González   +3 more
doaj   +1 more source

Effects of nonlocality in time of interactions of an atom with its surroundings on the broadening of spectral lines of atoms [PDF]

, 2002
We investigate effects of nonlocality in time of the interaction of an atom with its surroundings on the spectral line broadening. We show that these effects can be very significant: In some cases nonlocality in time of this interaction can give rise to ...
Adamian, Adamian, Aigul A. Mutygullina, Antoine, Beane, Feynman, Feynman, Fonda, Gainutdinov, Gainutdinov, Gainutdinov, Gainutdinov, Gainutdinov, Horwitz, Lindblad, Lindblad, Reed, Renat Kh. Gainutdinov, Sandulescu, Sinha, Stefanescu, Sudbery, Weinberg, Weinberg, Weinberg, Werner Scheid, Williams, Witten   +27 more
core   +2 more sources

The Spectral Line Shape of Exotic Nuclei [PDF]

, 1996
The quadrupole strength function of $^{28}O$ is calculated making use of the SIII interaction, within the framework of continuum-RPA and taking into account collisions among the nucleons (doorway coupling).
E. Vigezzi, F. Ghielmetti, G. Colò, G. Colò, G.F. Bertsch, G.F. Bertsch, G.F. Bertsch, H. Sagawa, I. Hamamoto, K.F. Liu, M. Yokoyama, P. F. Bortignon, R. A. Broglia   +12 more
core   +2 more sources

Modeling the near-infrared lines of O-type stars [PDF]

, 2004
We use a grid of 30 line-blanketed unified stellar photosphere and wind models for O-type stars; computed with the code CMFGEN in order to evaluate its potential in the near-infrared spectral domain. The grid includes dwarfs, giants and supergiants.
de Koter, A., Lenorzer, A., Mokiem, M. R., Puls, J.   +3 more
core   +2 more sources

A case study of HF radar spectra and 630.0 nm auroral emission in the pre-midnight sector [PDF]

Annales Geophysicae, 2001
A comparison of HF radar backscatter observed by the CUTLASS Finland radar, meridian scanning photometer data from Longyearbyen, magnetic field variations from IMAGE stations, and particle precipitation measured by the DMSP F12 spacecraft is presented.
M. Lester, M. Lester, S. E. Milan, V. Besser, R. Smith   +4 more
doaj   +1 more source