An international team of astronomers has conducted follow-up photometric and spectroscopic observations of SN 2017cfd—a Type Ia supernova that was discovered some 38 hours after the fitted first-light time. Results of the new study, presented in a paper published November 18 on arXiv.org, reveal more details about the properties of this source.
Source:
https://phys.org/news/2019-11-properties-ia-supernova-young.html