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Detection of Be II in the Small Magellanic Cloud
Luca Izzo, Paolo Molaro, Gabriele Cescutti +8
We analyse high resolution spectra of two classical novae that exploded in the Small Magellanic Cloud. Be II resonance transitions are detected in both ASASSN-19qv and ASASSN-2…
J17218842: a gravitationally lensed binary quasar with a proximate damped Lyman- absorber
C. Lemon, M. Millon, D. Sluse +5
High-redshift binary quasars provide key insights into mergers and quasar activity, and are useful tools for probing the spatial kinematics and chemistry of galaxies along the line…
Dwarf galaxies in the MATLAS survey: Hubble Space Telescope observations of the globular cluster system in the ultra-diffuse galaxy MATLAS-2019
Oliver Müller, Patrick R. Durrell, Francine R. Marleau +11
Ultra-diffuse galaxies (UDGs) are very low-surface brightness galaxies with large effective radii. Spectroscopic measurements of a few UDGs have revealed a low dark matter content,…