The hydrodynamics of photoionized flows

Gary J. Ferland, William J. Henney, Robin J.R. Williams, S. Jane Arthur

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations


We are working to bring together the ingredients necessary for a complete description of both the microphysics and the hydrodynamics of plasmas, allowing a self-consistent treatment of emission line regions such as those found in Galactic H II regions like Orion, extragalactic H II regions and luminous starburst galaxies. We are incorporating the necessary hydrodynamics into Cloudy, a plasma emission code that includes the physics needed to simulate the ionized, atomic, and molecular phases of the environment. The hydrodynamical flow, from the molecular cloud through the PDR into the H II region, brings advection terms into the thermal and ionization balance allowing both the H II region and PDR to be treated self-consistently. This will enable us to fully exploit the mid to far IR spectrum to understand the chemical evolution of the host system as well as star formation on many scales. Our first applications are to Orion, the best observed of these systems.

Original languageEnglish
Pages (from-to)43-49
Number of pages7
JournalRevista Mexicana de Astronomia y Astrofisica: Serie de Conferencias
StatePublished - 2002
EventIonized Gaseous Nebulae, a Conference to Celebrate the 60th Birthdays of Silvia Torres-Peimbert and Manuel Peimbert - Mexico City, Mexico
Duration: Nov 21 2000Nov 24 2000


  • Galaxies: starburst
  • H II regions
  • Hydrodynamics
  • Stars: formation

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics


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