Keywords

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The publisher regrets the following information was mistakenly omitted on the copyright page during the production process:

Translation from the Portuguese language edition: Astrofίsica do Meio Interestelar by Walter J. Maciel © Editora da Universidade de São Paulo (Edusp). All rights reserved.

The following corrections given by the author were mistakenly omitted during the production process:

PAGE 18, SECTION 2.2.1, SECOND PARAGRAPH

Plasma emissivity, defined as the total power emitted per unit volume per unit solid angle per unit frequency interval between ν e ν+ dν, is given by

$$ {\varepsilon_v}=\frac{{{n_{\mathrm{ e}}}}}{{4\pi }}\int {P(\upsilon, v)} f(\upsilon )\mathrm{ d}v, $$
(2.2)

and it is generally measured in erg cm−3 s−1 sr−1 Hz−1, where f(v) is the distribution function of electron velocities and P(v,ν) is the total power emitted per unit frequency interval during the collision between an electron with velocity v and an ion with density n i. If f(v) is given by the Maxwellian distribution, the emissivity is...

PAGE 57, AFTER EQUATION (4.13)

where we neglect the radiation intensity falling on the region opposite to the observer and τ νr is again the total optical depth of the emitting region...

PAGE 80, AFTER EQUATION (5.15)

From (5.6), we see that coefficient γ jk gives the collision probability per unit time per field particle so that nc γ jk gives the number of excitations per second, and the product nt nc γ jk gives the number of excitations per cubic centimeter per second, where nt is the test particle density...

PAGE 126, EQUATION (7.18)

$$ {\Gamma_{\mathrm{ e}\mathrm{ i}}}={n_{\mathrm{ e}}}{n_{\mathrm{i}}}\sum\limits_j {\left[ {\left\langle {{\sigma_{cj }}v} \right\rangle{{\bar{E}}_2}-\left\langle {{\sigma_{cj}}v{E_1}} \right\rangle } \right]},$$
(7.18)