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SALT spectroscopy of the HMXB associated with the LMC supernova remnant MCSNR\,J05136724
Vasilii Gvaramadze, Alexei Kniazev, Norberto Castro +1
We report the results of optical échelle spectroscopy with the Southern African Large Telescope (SALT) of the mass donor star BSDL\,923 in the neutron star (NS) high-mass X-ray bin…
Dynamical vs Supernova Acceleration of OB Stars in the Small Magellanic Cloud
M. S. Oey, J. Dorigo Jones, G. D. Phillips +3
We use the RIOTS4 sample of SMC field OB stars to determine the origin of massive runaways in this low-metallicity galaxy using Gaia proper motions, together with stellar masses ob…
Strong Variability in AzV 493, an Extreme Oe-Type Star in the SMC
M. S. Oey, N. Castro, M. Renzo +11
We present 18 years of OGLE photometry together with spectra obtained over 12 years, revealing that the early Oe star AzV 493 shows strong photometric (Delta I < 1.2 mag) and spect…
MUSE crowded field 3D spectroscopy in NGC 300 : IV. Planetary nebula luminosity function
Azlizan A. Soemitro, Martin M. Roth, Peter M. Weilbacher +5
We perform a deep survey of planetary nebulae (PNe) in the spiral galaxy NGC 300 to construct its planetary nebula luminosity function (PNLF). We aim to derive the distance using t…