Abundances of the heavy elements in the Magellanic Clouds. II - H II regions and supernova remnants

Details Abundances of the heavy elements in the Magellanic Clouds. II - H II regions and supernova remnants Abundances of the heavy elements in the Magellanic Clouds. II - H II regions and supernova remnants

Sep 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apjs...74...93r&link_type=abstract

Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 74, Sept. 1990, p. 93-128.

Astronomy and Astrophysics

Astrophysics

213

Abundance, H Ii Regions, Heavy Elements, Magellanic Clouds, Supernova Remnants, Herbig-Haro Objects, Iron, Photoionization, Star Formation, Supergiant Stars, Ultraviolet Spectra

Scientific paper

The first consistent abundance analysis of both H II regions and SNRs in the Magellanic Clouds is presented. Detailed modeling of the SNRs results in abundance measures in good agreement with those from H II regions, confirming the overall accuracy of the generalized modeling code MAPPINGS for both photoionized and shock-excited nebulae. A differential analysis performed between SNRs and the Galactic Herbig-Haro (H-H) objects for elements heavier than Ar reveals that there is no difference for grain depletion in either Cloud SNR or Galactic H-H objects. It shows that there is no measurable zero point error between the Fe abundances determined from supergiants and those determined from SNRs. This permits the two traditionally separated abundance scales of the H II regions and supergiants to be combined for the first time into one comprehensive system for the first time. The importance of this overall abundance pattern for the determination of the star formation history in the Clouds is addressed.

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