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Abstract:

The Balmer decrement was calculated for a homogeneous, spherical, pure hydrogen nebula, ionised and excited both by radiative and collisional processes. Reabsorption in the Balmer series from sublevels 2 s and 2 p was taken into account. Calculations were carried out for electron temperatures of 104 K and 2×104 K, electron densities from 103 to 106 cm-3, and radii from 1015 to 1017 cm. The results define allowed and forbidden regions in the log(Hβ/Hγ) vs log(Hα/Hβ) diagram different from those of previous results obtained assuming purely radiative or purely collisional ionisation and excitation. A brief comparison with observations is presented and discussed. © 1971 D. Reidel Publishing Company.

Registro:

Documento: Artículo
Título:On the spectrum of a gaseous nebula of pure hydrogen - III: The Balmer decrement
Autor:Gerola, H.; Salem, M.; Panagia, N.
Filiación:Departmento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
Laboratorio di Astrofisica, Frascati, Italy
Año:1971
Volumen:10
Número:3
Página de inicio:383
Página de fin:392
DOI: http://dx.doi.org/10.1007/BF00649682
Título revista:Astrophysics and Space Science
Título revista abreviado:Astrophys Space Sci
ISSN:0004640X
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004640X_v10_n3_p383_Gerola

Referencias:

  • Auer, L.H., Transfer of Lyman Alpha in Diffuse Nebulae (1968) The Astrophysical Journal, 153, p. 783
  • Avery, L.W., House, L.L., An Investigation of Resonance-Line Scattering by the Monte Carlo Technique (1968) The Astrophysical Journal, 152, p. 493
  • Burgess, A., (1965) Mem. Roy. Astron. Soc., 69, p. 1
  • Capriotti, E., The Hydrogen Radiation Spectrum in Gaseous Nebulae. (1964) The Astrophysical Journal, 139, p. 225
  • Caputo, F., Gerola, H., Panagia, N., (1970) Astrophys. Letters, 5, p. 275
  • Cox, D.P., Matthews, W.G., Effects of Self-Absorption and Internal Dust on Hydrogen-Line Intensities in Gaseous Nebulae (1969) The Astrophysical Journal, 155, p. 859
  • Flower, D.R., The Ionization Structure of Planetary Nebulae--VIII: Models of the Nebulae NGC 7662 and IC 418 (1969) Monthly Notices of the Royal Astronomical Society, 146, p. 243
  • Gerola, H., Panagia, N., (1968) Astrophys. Space Sci., 2, p. 285
  • Gerola, H., Panagia, N., (1970) Astrophys. Space Sci., 8, p. 120
  • Karzas, W.I., Latter, R., (1961) Astrophys. J., p. 167
  • Kuhi, L.Y., (1968) Interstellar Ionized Hydrogen, , Y., Terzian, W. A. Benjamin, New York
  • Mihalas, D., Statistical-Equilibrium Model Atmospheres for Early-Type Stars. I. Hydrogen Continua (1967) The Astrophysical Journal, 149, p. 169
  • O'Dell, C.R., Photoelectric Spectrophotometry of Planetary Nebulae. (1963) The Astrophysical Journal, 138, p. 1018
  • O'Dell, C.R., A New Peculiar Emission-Line Object (1966) The Astrophysical Journal, 145, p. 487
  • O'Dell, C.R., Photoelectric Spectrophotometry of MHα 328-116 (1967) The Astrophysical Journal, 149, p. 373
  • Osterbrock, D.E., The Escape of Resonance-Line Radiation from an Optically Thick Nebula. (1962) The Astrophysical Journal, 135, p. 195
  • Parker, R.A.R., The Spectrum of a Nebula Under Conditions of Collisional Excitation and Ionization (1964) The Astrophysical Journal, 139, p. 208
  • Seaton, M. J.: 1960, in Reports on Progress in Physics, 23, 317; Wampler, E.J., Line Intensities in Quasi-Stellar Objects. I. PHL 938, 3c 249.1, and PKS 2251+11 (1968) The Astrophysical Journal, 153, p. 19

Citas:

---------- APA ----------
Gerola, H., Salem, M. & Panagia, N. (1971) . On the spectrum of a gaseous nebula of pure hydrogen - III: The Balmer decrement. Astrophysics and Space Science, 10(3), 383-392.
http://dx.doi.org/10.1007/BF00649682
---------- CHICAGO ----------
Gerola, H., Salem, M., Panagia, N. "On the spectrum of a gaseous nebula of pure hydrogen - III: The Balmer decrement" . Astrophysics and Space Science 10, no. 3 (1971) : 383-392.
http://dx.doi.org/10.1007/BF00649682
---------- MLA ----------
Gerola, H., Salem, M., Panagia, N. "On the spectrum of a gaseous nebula of pure hydrogen - III: The Balmer decrement" . Astrophysics and Space Science, vol. 10, no. 3, 1971, pp. 383-392.
http://dx.doi.org/10.1007/BF00649682
---------- VANCOUVER ----------
Gerola, H., Salem, M., Panagia, N. On the spectrum of a gaseous nebula of pure hydrogen - III: The Balmer decrement. Astrophys Space Sci. 1971;10(3):383-392.
http://dx.doi.org/10.1007/BF00649682