Vol. 631
In section 6. Interstellar and circumstellar matter

The supernova remnant population of the Small Magellanic Cloud

by P. Maggi, M. D. Filipovic, B. Vukotic, et al. 2019, A&A, 631, A127

Supernovae either result from the death of massive stars (larger than ~8 solar masses) or from the thermonuclear disruption of white dwarfs (type Ia). The abundance distribution of metals (mainly O, Ne, Mg, and Fe) in the remnants of these explosions are indicative of their progenitors. In this paper, Maggi et al. present the most updated study of the supernova remnants in the Small Magellanic Cloud, consisting of 19 remnants and four candidates. They also find that the ratio of core collapse of type Ia supernovae is three times higher in the Small Magellanic Cloud than in the Large Magellanic Cloud. This might be due to the presence of an enhanced star formation episode in the Large Magellanic Cloud (~1 Gyr ago), which nowadays results in an increase of type Ia supernovae.