Pismis 24-1
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 Pismis 24-1 |
 Pismis |
 Pismis 24 |
 NGC 6357 |
The nebula NGC 6357 shelters an open cluster, Pismis 24 where is supposed larger and more brilliant of visible stars of this cluster, Pismis 24-1. It appeared that this star is in fact a double star, revealed by the recent observation of camera ACS of the space telescope Hubble. We determine that Pismis 24-1 is composed of at least three objects, the resolved Pismis 24-1SW and the unresolved spectroscopic binary Pismis 24-1NE. The evolutionary zero-age masses of those two objects and that of the nearby Pismis 24-17 are all approximately 100 solar masses, very large but under the stellar upper mass limit.
[edit] See also
[edit] External links
- Massive Stars in Open Cluster Pismis 24 , 2006 December 19
- astrocoolpix.net Parler astronomie sur
