New Type Ia supernova discovered

JUNE 17, 2024 REPORT

by Tomasz Nowakowski , Phys.org

Using the James Webb Space Telescope (JWST), astronomers from the Space Telescope Science Institute (STScI) have discovered a new supernova. Designated SN 2023adsy, the newfound stellar explosion is the most distant Type Ia supernova so far detected. The finding was detailed in a research paper published June 7 on the pre-print server arXiv.

Supernovae (SNe) are powerful and luminous stellar explosions. They are important for the scientific community as they offer essential clues into the evolution of stars and galaxies. In general, SNe are divided into two groups based on their atomic spectra: Type I (no hydrogen in their spectra) and Type II (showcasing hydrogen spectral lines).

Type Ia supernovae (SN Ia) are found in binary systems in which one of the stars is a white dwarf. Stellar explosions of this type are important for the scientific community, as they offer essential clues into the evolution of stars and galaxies.

SN 2023adsy was initially identified in 2023 as a transient object in the galaxy JADES-GS+53.13485−27.82088, at a redshift of 2.9. Follow-up observations of SN 2023adsy suggested that it may be a supernova of Type Ia.
Now, a new study conducted by a team of astronomers led by STScI's Justin R. Pierel confirms the previous assumptions.

More:
https://phys.org/news/2024-06-ia-supernova.html