Astrophysics of Gaseous Nebulae and Active Galactic Nuclei

  title={Astrophysics of Gaseous Nebulae and Active Galactic Nuclei},
  author={Donald E. Osterbrock and Gary J. Ferland},
Preface Preface to First Edition General Introduction Photoionization Equilibrium Thermal Equilibrium Calculation of Emitted Spectrum Comparison of Theory with Observations Internal Dynamics of Gaseous Nebulae Interstellar Dust Infrared Radiation and Molecules H II Regions in the Galactic Context Planetary Nebulae Heavy Elements and High-Energy Effects Nova and Supernova Remnants Active Galactic Nuclei Diagnostics and Physics Active Galactic Nuclei Results Appendix 1: Measures of Light Appendix… 

Physical Conditions and Chemical Abundances in Photoionized Nebulae from Optical Spectra

This chapter presents a review on the latest advances in the computation of physical conditions and chemical abundances of elements present in photoionized gas (H ii regions and planetary nebulae).

Collision Processes in Astrophysical Environments

Collisions of atoms, ions, electrons and molecules play an important role in the interpretation of astronomical observations and in our understanding of the physical characteristics and the history

Atomic Processes in Gaseous Nebulae

The atomic physics relevant to gaseous nebulae is critically examined using modelling software with particular emphasis on radio recombination lines (RRLs). The theoretical spectral line intensities

Numerical simulations of photoionized plasmas: applications to astrophysical and laboratory environments

A wide variety of astrophysical objects, ranging from newly formed stars to accreting black holes, produce ionizing radiation. Nearby material will reprocess these photons into other forms of light.

Molecule and dust emission at the beginnings and ends of stellar evolution

A combination of photoionization and photodissociation region codes is used to model planetary nebulae and the Crab Nebula supernova remnant, to explain the observed molecular emission. The inclusion

Abundance Profiles in Disk Galaxies from Nebulae

Galactic and extragalactic abundance studies of H II regions, planetary nebulae, and supernova remnants are compiled and their implications briefly reviewed. Galaxy global metallicity appears to be

Understanding strong molecular hydrogen emission in astronomical environments

Here I describe recent studies of objects with molecular hydrogen emission that is strong relative to other spectral lines. Large telescopes and fast spectrometers have made the 2 {\mu}m window

Testing atomic collision theory with the two-photon continuum of astrophysical nebulae

Accurate rates for energy-degenerate l-changing collisions are needed to determine cosmological abundances and recombination. There are now several competing theories for the treatment of this

Modelling the nebular emission from primeval to present-day star-forming galaxies

We present a new model of the nebular emission from star-forming galaxies in a wide range of chemical compositions, appropriate to interpret observations of galaxies at all cosmic epochs. The model

Radiation—hydrodynamical collapse of pre-galactic clouds in the ultraviolet background

To explain the effects of the ultraviolet (UV) background radiation on the collapse of pre-galactic clouds, we implement a radiation–hydrodynamical calculation, combining one-dimensional spherical