Open AccessSpectrophotometry of H II regions in the spiral galaxy M101
Author(s) -
K. E. Sedwick,
L. H. Aller
Publication year - 1981
Publication title -
proceedings of the national academy of sciences of the united states of america
Language(s) - English
Resource type - Journals
eISSN - 1091-6490
pISSN - 0027-8424
DOI - 10.1073/pnas.78.4.1994
Subject(s) - spiral galaxy , astrophysics , physics , extinction (optical mineralogy) , galaxy , spiral (railway) , barred spiral galaxy , hydrogen line , ionization , irregular galaxy , astronomy , grand design spiral galaxy , interstellar medium , lenticular galaxy , galaxy formation and evolution , optics , ion , mathematical analysis , mathematics , quantum mechanics
Spectral line intensity data are presented for ionized hydrogen regions in the giant spiral galaxy M101. The influence of interstellar extinction is assessed and electron temperatures of the gas clouds are derived.