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High-resolution Near-infrared Spectroscopic Study of Galactic Supernova Remnants. I. Kinematic Distances
Yong-Hyun Lee, Bon-Chul Koo, Jae-Joon Lee
We have carried out high-resolution near-infrared spectroscopic observations toward 16 Galactic supernova remnants (SNRs) showing strong H emission features. A dozen bright H…
Extra-tidal stars and chemical abundance properties of two metal-poor globular clusters M53 (NGC 5024) and NGC 5053
Sang-Hyun Chun, Jae-Joon Lee, Dongwook Lim
We search for extra-tidal stars around two metal-poor Galactic globular clusters, M53 and NGC 5053, using the near-infrared APOGEE spectra. Applying the t-SNE algorithm on the chem…
Fluorine in the solar neighbourhood: the need for several cosmic sources
Nils Ryde, Henrik Jönsson, Gregory Mace +14
The cosmic origin of fluorine is still not well constrained. Several nucleosynthetic channels at different phases of stellar evolution have been suggested, but these must be constr…