Galaxy Mass - How much is stellar/gas?

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    Galaxy Mass
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SUMMARY

The discussion centers on the mass composition of galaxies, specifically the proportion of stellar mass versus gas mass at a redshift of approximately z~0.5. It is established that the baryonic mass function of field galaxies provides crucial insights into these proportions. The referenced resource from Caltech's NASA/IPAC Extragalactic Database (NED) offers detailed data on the baryonic mass function, which is essential for understanding the average mass distribution in galaxies while ignoring dark matter influences.

PREREQUISITES
  • Understanding of baryonic mass functions
  • Familiarity with redshift concepts in cosmology
  • Knowledge of galaxy formation and evolution
  • Basic grasp of astrophysical measurements and data interpretation
NEXT STEPS
  • Research the baryonic mass function of field galaxies using the NED database
  • Study the implications of redshift on galaxy mass composition
  • Explore the role of dark matter in galaxy mass estimates
  • Investigate current methodologies for measuring stellar and gas mass in galaxies
USEFUL FOR

Astronomers, astrophysicists, and students studying galaxy formation and evolution will benefit from this discussion, particularly those focusing on mass distribution and the effects of redshift on galaxies.

SteveDC
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Hi, ignoring Dark Matter, I was wondering on average what portion of a galaxies mass is stars and what portion is gas.

I am guessing it fluctuates with redshift so for arguments sake let's say we are only talking about galaxies at z~0.5

Thanks

Steve
 
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