- Conference date: 7–19 September 2008
- Location: Cefalu, Sicily (Italy)
We use the star formation history map of the Large Magellanic Cloud recently published by Harris & Zaritsky to study the sites of the four smallest (and presumably youngest) Type Ia supernova remnants: 0509–67.5, 0519–69.0, N103B and DEM L71. We find that three of the four Type Ia remnants are associated with old, metal‐poor stellar populations, with little or no recent star formation. These include SNR 0509–67.5 which is known to have been originated by an extremely bright SN 1991 T‐like event, and yet is located very far away from any star forming regions. It is very unlikely that this bright Type Ia SN had a young stellar progenitor. The fourth Type Ia remnant, SNR N103B is associated with vigorous star formation activity in the last 100 Myr, and might have had a relatively younger and more massive progenitor.
MOST READ THIS MONTH
MOST CITED THIS MONTH
Article metrics loading...