Populations of Rydberg states of atoms in nebulae | Zendy

Gulyaev S.A. | Zendy; Nefedov S.A. | Zendy

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Populations of Rydberg states of atoms in nebulae

Author(s) -

Gulyaev S.A.,

Nefedov S.A.

Publication year - 1991

Publication title -

astronomische nachrichten

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.394

H-Index - 63

eISSN - 1521-3994

pISSN - 0004-6337

DOI - 10.1002/asna.2113120108

Subject(s) - physics , rydberg formula , planetary nebula , atomic physics , ionization , excited state , range (aeronautics) , hydrogen , ion , astrophysics , stars , materials science , quantum mechanics , composite material

Populations of highly‐excited states of hydrogen in gaseous nebulae are calculated including effects of lowering the atomic ionization potential. Factors b n and dln b n /d n were computed for a large range of temperature and densities. Collisions only between adjacent levels (Δ n = ±1) were included in the set of the statistical balance equations. Results predict the existence of a negative branch of the dln b n /d n curve. They have to be taken into account in calculating the nebulae models.

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