Why is the Milky Way X-factor constant?

@article{Narayanan2013WhyIT,
  title={Why is the Milky Way X-factor constant?},
  author={D. Narayanan and P. Hopkins},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2013},
  volume={433},
  pages={1223-1229}
}
  • D. Narayanan, P. Hopkins
  • Published 2013
  • Physics
  • Monthly Notices of the Royal Astronomical Society
  • The CO-H2 conversion factor (Xco; otherwise known as the X-factor) is observed to be remarkably constant in the Milky Way and in the Local Group (aside from the SMC). To date, our understanding of why Xco should be so constant remains poor. Using a combination of extremely high resolution (~ 1 pc) galaxy evolution simulations and molecular line radiative transfer calculations, we suggest that Xco displays a narrow range of values in the Galaxy due to the fact that molecular clouds share very… CONTINUE READING

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