scholarly journals Electrically switchable electro-optic filters for spectral line emission detection

2021 ◽  
Vol 60 (4) ◽  
pp. 1059
Author(s):  
Ben Pelleg ◽  
Carl Steinhauser ◽  
Marquise Pullen ◽  
Joseph Linden ◽  
Adam Fontecchio
Keyword(s):  
Spectral Line ◽  
Line Emission ◽  
Electro Optic ◽  
Emission Detection

SMA Spectral Line Survey of the Proto-Planetary Nebula CRL 618

2018 ◽  
Vol 14 (S343) ◽  
pp. 483-484
Author(s):  
Nimesh A. Patel ◽  
Carl Gottlieb ◽  
Ken Young ◽  
Tomasz Kaminski ◽  
Michael McCarthy ◽  
...  
Keyword(s):  
Spectral Line ◽  
Planetary Nebula ◽  
Line Emission ◽  
Asymptotic Giant Branch ◽  
60 Ghz ◽  
Agb Stars ◽  
Complex Molecules ◽  
Compact Region ◽  
Line Survey ◽  
Pn Stage

AbstractCarbon-rich Asymptotic Giant Branch (AGB) stars are major sources of gas and dust in the interstellar medium. During the brief (∼1000 yr) period in the evolution from AGB to the Planetary Nebula (PN) stage, the molecular composition evolves from mainly diatomic and small polyatomic species to more complex molecules. Using the Submillimeter Array (SMA), we have carried out a spectral line survey of CRL 618, covering a frequency range of 281.9 to 359.4 GHz. More than 1000 lines were detected in the ∼60 GHz range, most of them assigned to HC3N and c-C3H2, and their isotopologues. About 200 lines are unassigned. Lines of CO, HCO+, and CS show the fast outflow wings, while the majority of line emission arises from a compact region of ∼1” diameter. We have analyzed the lines of HC3N, c-C3H2, CH3CN, and their isotopologues with rotation temperature diagrams.

Density Diagnostic Using Stark Broadening of He I Spectral Line Emission from Rydberg Levels

2006 ◽  
Vol 46 (7-9) ◽  
pp. 661-666 ◽  
Author(s):  
M. Koubiti ◽  
H. Capes ◽  
L. Godbert-Mouret ◽  
Y. Marandet ◽  
A. Meigs ◽  
...  
Keyword(s):  
Spectral Line ◽  
Line Emission ◽  
Stark Broadening
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