Seminario - Patrice Bouchet (Department d'Astrophysique CEA (Commissariat à l’énergie atomique et aux énergies alternatives), Paris Saclay, FR)

Current difficulties in understanding the SED of the young SNR 1987A - How the JWST will help
Tipologia evento: 
Data evento
Data inizio evento: 
11/12/2019 - 11:30
Data fine evento: 
11/12/2019 - 12:30
Data pubblicazione evento
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The explosion of SN 1987A in the LMC on February 23, 1987, generated a real outburst among many astronomers who gave to this once-in-a-life-time event the importance it deserved. I will single out the exceptional temporal coverage of the observations conducted in the infrared, and their importance in understanding the physical phenomena that accompanied the evolution of the supernova. I will give a brief summary of the main results yield at ESO, enlightening in particular (i) the building of the most complete and accurate bolometric light curve ever obtained from a supernova and the recent issues raised recently about it, (ii) the discovery of dust condensation in the ejecta, and (iii) the first estimates of chemical abundances. Observations are continuing with their set of surprises and puzzles, as was the detection of a large amount of very cold dust in the ejecta, the identification of a warmer dust component coexisting with silicates in the inner equatorial ring (ER), and the new challenges related to the Spectral Energy Distribution (SED) based on the recent observations. I will present up-to-date results from observations carried out with ALMA, Spitzer and SOFIA, emphasizing the on-going dust destruction process in the ER. Finally, I will discuss the observations of SNR 1987A which will be carried out by the James Webb Space Telescope, as part of the JWST/MIRI team guarantee time.

Villa Bazzoni, via Bazzoni 2, Trieste


John Danziger

Ultimo aggiornamento: 10-12-2019 - 16:34