SN 1997D
 | This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. (May 2022) |
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| Event type | Supernova |
|---|---|
| Type 2 | |
| Date | c. 43.78 million years ago (detected January 1997 by Duilia Mello) |
| Constellation | Reticulum |
| Distance | c. 43.78 million ly |
| Remnant | Black hole |
| Host | NGC 1536 |
| Progenitor | Star c. 30 solar masses |
| Other designations | SN 1997D |
SN 1997D, detected in January 1997 by Duília de Mello in galaxy NGC 1536 in Reticulum constellation is a first clearly identified example of atypical Type II supernova with a very low luminosity and expansion velocity.
Progenitor
[edit]There are two alternatives, a high-mass 25-40 solar masses star or smaller star with mass of 8-10 solar masses. As there is no evidence that a neutron star was formed during the collapse of the star, it is likely that star was in upper spectrum of the mass.
Remnants
[edit]Observations of the light curve from SN 1997D showed no evidence of other energy sources in the expanding supernova envelope therefore it is unlikely that a Neutron star was created, all the evidence leads to the creation of the stellar mass black hole of approximately 3 solar masses.
References
[edit]From twilight to highlight: the physics of supernovae : proceedings of the ... By Wolfgang Hillebrandt, Bruno Leibundgut
The fading of supernova 1997D Benetti, S., Turatto, M., Balberg, S., Zampieri, L., Shapiro, S. L., Cappellaro
