3 papers
astro-ph.HE2025
Spectroscopy of Supernova Remnants and Candidates in M31
Nelson Caldwell, John C. Raymond, Knox S. Long +1
With a star formation rate of order 0.4 M yr, M31 should have significant population of supernova remnants (SNRs), and, in fact, 156 SNR and SNR candidates have bee…
astro-ph.GA2024
Uncovering the Ghostly Remains of an Extremely Diffuse Satellite in the Remote Halo of NGC 253
Sakurako Okamoto, Annette M. N. Ferguson, Nobuo Arimoto +12
We present the discovery of NGC253-SNFC-dw1, a new satellite galaxy in the remote stellar halo of the Sculptor Group spiral, NGC 253. The system was revealed using deep resolved st…
astro-ph.GA2024
The structure of the stellar halo of the Andromeda galaxy explored with the NB515 for Subaru/HSC. I.: New Insights on the stellar halo up to 120 kpc
Itsuki Ogami, Mikito Tanaka, Yutaka Komiyama +16
We analyse the M31 halo and its substructure within a projected radius of 120 kpc using a combination of Subaru/HSC and CFHT/MegaCam - \& -…