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Detection of the Keplerian decline in the Milky Way rotation curve
Yongjun Jiao, Francois Hammer, Haifeng Wang +4
Our position inside the Galactic disc had prevented us from establishing an accurate rotation curve, until the advent of Gaia, whose third data release (Gaia DR3) made it possible…
A Machine Learning Approach to Galactic Emission-Line Region Classification
Carter Lee Rhea, Laurie Rousseau-Nepton, Ismael Moumen +13
Diagnostic diagrams of emission-line ratios have been used extensively to categorize extragalactic emission regions; however, these diagnostics are occasionally at odds with each o…
Asymmetries in random motions of neutral Hydrogen gas in spiral galaxies
P. Adamczyk, P. Amram, L. Chemin +4
(Abridged). It has been recently shown that random motions of the neutral Hydrogen gas of the Triangulum galaxy (M33) exhibit a bisymmetric perturbation which is aligned with the m…
Constraining the LyC escape fraction from LEGUS star clusters with SIGNALS HII region observations: A pilot study of NGC 628
J. W. Teh, K. Grasha, M. R. Krumholz +23
The ionising radiation of young and massive stars is a crucial form of stellar feedback. Most ionising (Lyman-continuum; LyC, ) photons are absorbed close to the stars tha…
Velocity measurement in the extensive [OIII] emission region 1.2° south-east of M31
P. Amram, C. Adami, B. Epinat +1
The discovery of a broad, 1.5 long filamentary [OIII] 5007 emission 1.2 south-east of the M31 nucleus has recently been reported. More than 100 hour…