Polycyclic aromatic hydrocarbons in the dwarf galaxy IC 10 View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2011-07-05

AUTHORS

D. S. Wiebe, O. V. Egorov, T. A. Lozinskaya

ABSTRACT

Archival infrared Spitzer Space Telescope observations are used to study the dust component of the ISM in the irregular galaxy IC 10. The dust distribution in the galaxy is compared to the distributions of the Hα and [S II] emission, neutral gas and CO clouds, and ionizing radiation sources. The distribution of polycyclic aromatic hydrocarbons (PAHs) in the galaxy is shown to be highly non-uniform, with the fraction of these particles in total dust mass reaching 4%. On the whole, PAHs avoid bright H II regions and correlate with the atomic and molecular gas. This pattern suggests that they form in the dense interstellar gas. It is suggested that the observed metallicity dependence of the PAH abundance shows up not only globally (at the level of the entire galaxy), but also locally (at least, at the level of individual H II regions). No conclusive evidence for shock destruction of PAHs in the IC 10 galaxy has been found. More... »

PAGES

585-594

References to SciGraph publications

  • 2009-11-07. Stellar population of the irregular galaxy IC 10 in ASTRONOMY LETTERS
  • Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1134/s1063772911070080

    DOI

    http://dx.doi.org/10.1134/s1063772911070080

    DIMENSIONS

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