Nebular spectroscopy: A guide on H II regions and planetary nebulae

@article{Peimbert2017NebularSA,
  title={Nebular spectroscopy: A guide on H II regions and planetary nebulae},
  author={M. Peimbert and Antonio Peimbert and Gloria Delgado-Inglada},
  journal={arXiv: Astrophysics of Galaxies},
  year={2017}
}
We present a tutorial on the determination of the physical conditions and chemical abundances in gaseous nebulae. We also include a brief review of recent results on the study of gaseous nebulae, their relevance for the study of stellar evolution, galactic chemical evolution, and the evolution of the universe. One of the most important problems in abundance determinations is the existence of a discrepancy between the abundances determined with collisionally excited lines and those determined by… 

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References

SHOWING 1-10 OF 189 REFERENCES
Temperature variations and chemical abundances in planetary nebulae
In this review we present a brief discussion on the observational evidence in favor of the presence of temperature variations, and conclude that many planetary nebulae show spatial temperature
Abundances in photoionized nebulae of the Local Group and nucleosynthesis of intermediate mass stars
Photoionized nebulae, comprising HII regions and planetary nebulae, are excellent laboratories to investigate the nucleosynthesis and chemical evolution of several elements in the Galaxy and other
Chemical abundances in Galactic planetary nebulae from faint emission lines
Deep spectrophotometry has proved to be a fundamental tool to improve our knowledge on the chemical content of planetary nebulae. With the arrival of very efficient spectrographs installed in the
Gaseous abundances in planetary nebulae: What have we learned in the past five years?
Abstract Nearly 50 years ago, in the proceedings of the first IAU symposium on planetary nebulae, Lawrence H. Aller and Stanley J. Czyzak said that “the problem of determination of the chemical
Ionized gaseous nebulae chemical abundance determination using the direct method
In this tutorial it is explained the procedure to analyze an optical emission-line spectrum produced by a nebula ionized by massive star formation. Particularly, it is described the methodology used
Electron temperature determination from nebular continuum emission in planetary nebulae and the importance of temperature fluctuations
Electron temperatures derived from the observed Balmer discontinuity are presented for 14 planetary nebulae. Electron temperatures deduced from the Paschen discontinuity are also obtained for four of
Young stars and ionized nebulae in M83: comparing chemical abundances at high metallicity
We present spectra of 14 A-type supergiants in the metal-rich spiral galaxy M83. We derive stellar parameters and metallicities and measure a spectroscopic distance modulus mu = 28.47 +/- 0.10 (4.9
Asymmetrical Planetary Nebulae VI
It is now clear that a binary formation pathway is responsible for a significant fraction of planetary nebulae, and this increased sample of known binaries means that we are now in a position to
Chemical Composition of Two H II Regions in NGC 6822 Based on VLT Spectroscopy
We present long-slit spectrophotometry of regions V and X of the Local Group irregular galaxy NGC 6822. The data consist of VLT FORS observations in the 3450-7500 A range. We have obtained electron
Binarity and the abundance discrepancy problem in planetary nebulae
The discrepancy between abundances computed using optical recombination lines (ORLs) and collisionally excited lines (CELs) is a major unresolved problem in nebular astrophysics. We show here that
...
1
2
3
4
5
...