scholarly journals Measurements of the Proton and Helium Spectra from CREAM-V

2017 ◽  
Author(s):  
Thomas Mernik ◽  
Y Amare ◽  
T Anderson ◽  
D Angelaszek ◽  
N Anthony ◽  
...  
Keyword(s):  
Helium Spectra

scholarly journals Proton and Helium Spectra from the CREAM-III Flight

2017 ◽  
Vol 839 (1) ◽  
pp. 5 ◽  
Author(s):  
Y. S. Yoon ◽  
T. Anderson ◽  
A. Barrau ◽  
N. B. Conklin ◽  
S. Coutu ◽  
...  
Keyword(s):  
Helium Spectra

Hydrogen and Helium Spectra of Gaseous Nebulae

1966 ◽  
Vol 143 ◽  
pp. 722 ◽  
Author(s):  
James B. Kaler
Keyword(s):  
Gaseous Nebulae ◽  
Helium Spectra

Improved Non-LTE Model Atmospheres for Subluminous O-Stars

1988 ◽  
Vol 132 ◽  
pp. 117-122
Author(s):  
U. Heber ◽  
K. Hunger ◽  
T. Rauch ◽  
K. Werner
Keyword(s):  
High Resolution ◽  
New Method ◽  
Balmer Line ◽  
Pure Hydrogen ◽  
Line Profiles ◽  
Stark Broadening ◽  
Echelle Spectrograph ◽  
Helium Spectra ◽  
Model Atom

Improved non-LTE model atmospheres designed for the analysis of very hot subluminous O stars are presented. The calculations are based on the new method of the accelerated lambda iteration (ALI) which proves capable of treating up to 100 levels of various ions. Presented here are improved calculations for (i) pure hydrogen model atmospheres including Stark broadening, (ii) for hydrogen- and helium-composed model atmospheres and (iii) first preliminary models which include in addition a detailed carbon model atom. These models remove an apparent mismatch of Balmer line profiles noted previously and fit high S/N, high-resolution hydrogen and helium spectra obtained with the ESO-Cassegrain echelle spectrograph very well.

scholarly journals The Cosmic‐Ray Proton and Helium Spectra between 0.4 and 200 GV

1999 ◽  
Vol 518 (1) ◽  
pp. 457-472 ◽  
Author(s):  
M. Boezio ◽  
P. Carlson ◽  
T. Francke ◽  
N. Weber ◽  
M. Suffert ◽  
...  
Keyword(s):  
Cosmic Ray ◽  
Helium Spectra

scholarly journals Cosmic-Ray Proton and Helium Spectra above 50 GeV

1972 ◽  
Vol 28 (15) ◽  
pp. 985-988 ◽  
Author(s):  
M. J. Ryan ◽  
J. F. Ormes ◽  
V. K. Balasubrahmanyan
Keyword(s):  
Cosmic Ray ◽  
Helium Spectra
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