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Paper: Detection of Helium Emissions in RR Lyr Since 1994
Volume: 529, RR Lyrae/Cepheid 2019: Frontiers of Classical Pulsators
Page: 343
Authors: Sefyani, F. L.; Benhida, A.; Benkhaldoun, Z.; De France, T.; Gillet, D.; Mathias, P.; Kolenberg, K.; El Jariri, Y.; Chafouai, K.; Sabil, M.; Elhabib, A.
Abstract: In this work and for the first time, we present the observation of the Helium emission of spectral lines (λ5875.66 Å and λ6678.16 Å) in RR Lyr since 1994.
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