|
|
Environment
Environmental factors are also likely to affect stellar evolution. Close binaries or more multiple systems are the obvious example but stars are also affected by gravitationally remote neighbours.
More massive YSO evolve faster, approach MS and produce blazing
stellar ionising radiation and winds and even become SN, whilst
low-mass stars are still pootling along as YSOs in the same cloud.
Hence evolution of low-mass stars is affected if high-mass ones switch
on nearby and start ablating low-mass stars' environments.
For example, is
there any systematic difference between Proplyds in the Orion star-forming region, (being fried by
Trapezium) and their analogues in quieter SFR like Chamaeleon or Taurus? As far as I know no
molecular emission detected from Proplyds althugh dust shadows are
seen. Don't know if other diagnostics are different - are Proplyds the
only low-mass still-accreting (pre-TT?) YSO with x-ray?
SN can trigger star formation, is the result IMF (initial mass
function) different from apparently untriggered cloud collapse?
No obvious application to this demo to produce results but note as a
future possible science q?
E.G. if we investigate Orion and the effects of the massive hot young Trapezium stars on the Proplyds, compare with quiet low-mass YSO region like Chamaeleon or Taurus.
|
|
Edit menu
