Sentences with phrase «hydrogen layer»
A Type Ic supernova may be produced by a high - mass star that has blown off much of its outer hydrogen layer while still retaining a significant helium layer, and so it is similar to a Type Ib except that helium is seen in its spectrum.
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«We characterized the field to estimate the depth of the dynamo region, suggesting that it may occur in a molecular hydrogen layer above the pressure - induced transition to the metallic state.»
The findings also challenge models of the planet's interior, pointing to a core that is not solid like Earth's, but is instead «fuzzy» and dilutely mingled with an overlying metallic hydrogen layer.
Type Ib and Ic supernovae result from the collapse of a massive star's core whose outer hydrogen layers have been transfered to a companion star or blown off from strong winds which is why they do not show hydrogen emission lines.
One of the important challenges going forward will be to understand the mechanism of electron conduction through this carbon - hydrogen layer,» said Liu.
«We work with a type of manufactured diamond that has a hydrogen layer on its surface.
They are thought to mostly be dying supergiants with their hydrogen layers blown away by stellar winds, thereby directly exposing their hot helium shells.