Is there a maximum mass limit for stars in the universe?

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Discussion Overview

The discussion revolves around the question of whether there is a maximum mass limit for stars in the universe. Participants explore theoretical and practical limits, as well as implications for stellar evolution and remnants.

Discussion Character

  • Debate/contested

Main Points Raised

  • One participant suggests there is no theoretical limit to a star's mass, but acknowledges a practical limit due to faster burnout rates leading to supernovae and the formation of neutron stars or black holes.
  • Another participant references a previous discussion on the topic, indicating ongoing interest and exploration of the question.
  • A different participant states that for Population I stars, the maximum mass is approximately 100 solar masses, as strong pulsations can disrupt the star.
  • It is proposed that there is an upper limit where stellar winds carry off the outer protosphere, with some models suggesting a cap around 200 solar masses, while older stars from 13 billion years ago might reach up to 300 solar masses due to low primordial metallicity.

Areas of Agreement / Disagreement

Participants express differing views on the existence and nature of a maximum mass limit for stars, with some proposing specific values and conditions while others challenge or refine these ideas. The discussion remains unresolved.

Contextual Notes

Participants note that the upper mass limit is not firmly established and may depend on various factors, including the star's metallicity and evolutionary stage.

DB
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Is there a maximum mass a star can have?

Thanks
 
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I don't believe there is a theoretical limit as such. However, there is a practical limit in that, the more mass a star has, the quicker it burns out. At that point it goes supernova and leaves behind something. This something could be a neutron star or a black hole, depending on size.
 
DB said:
Is there a maximum mass a star can have?

Thanks
For Population I stars, the maximum limit is ~100 solar masses since the (normal) main sequence pulsations are so strong as to disrupt and disperse the star. For others, link where turbo-1 suggested.
 
There is an upper limit because at some point the star will ignite and the stellar wind will begin carrying off the outer protosphere. The upper limit is not firmly established, but, as turbo-1 noted, our region of the universe caps out at around 200 solar masses. Theoretical models suggest stars formed over 13 billion years ago could acquire even larger masses due to low primordial metallicity - approaching 300 solar masses.
 

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