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19972026
most citedUnmanned Aerial Vehicles: A Survey on Civil Applications and Key Research Challenges

2.4k citations

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Showing 2016 · astro-ph.SRShow all

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astro-ph.SR2016★ 39 cited

Discovery of Rubidium, Cadmium, and Germanium Emission Lines in the Near-Infrared Spectra of Planetary Nebulae

N. C. Sterling, Harriet L. Dinerstein, Kyle F. Kaplan +1

We identify [Rb IV] 1.5973 and [Cd IV] 1.7204 micron emission lines in high-resolution (R=40,000) near-infrared spectra of the planetary nebulae (PNe) NGC 7027 and IC 5117, obtaine…