What does supervirial mean?
Supervirial means (physics) Expanding at an accelerating rate..
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Pronunciation varies by accent · adjective
(physics) Expanding at an accelerating rate..
For example, the 0.5-2 Myr old Orion Nebula Cluster ( ONC ), which is known to be supervirial with a virial mass about twice the observed mass ( Hillenbrand & Hartmann 1998 ), has already expelled its residual gas and is expanding rapidly.
For many of the young (~10Myr) star clusters M_(dyn) >> Mₚₕₒₜ Goodwin & Bastian (2006) suggest that this is a signature of gas expulsion and the 'infant mortality' scenario discussed in Section 2.1, i.e., they conclude that these clusters are supervirial.
If measured early enough (lt;2 Myr in our simulations, or #92;sim20 crossing times), the velocity dispersion can be used to determine whether a region was highly supervirial at birth without the risk of degeneracy.
It is subvirial when Q < 1, which corresponds to a negative acceleration of the polar inertia moment, Ï < 0 (initial contraction) and supervirial when Q >1, which corresponds to a positive acceleration of the polar inertia moment, Ï > 0 (initial expansion).
Use supervirial when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Supervirial means (physics) Expanding at an accelerating rate..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
For example, the 0.5-2 Myr old Orion Nebula Cluster ( ONC ), which is known to be supervirial with a virial mass about twice the observed mass ( Hillenbrand & Hartmann 1998 ), has already expelled its residual gas and is expanding rapidly.
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