English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We compare the diffuse H$\alpha$ map of our Galaxy with the FUV(1370-1710\AA) continuum map. The H$\alpha$ intensity correlates well with theFUV intensity. The H$\alpha$/FUV intensity ratio increases in general with theH$\alpha$ intensity and the FUV hardness ratio (1370-1520\AA\ to 1560-1710\AA),implying that late OB stars may be the main source of the H$\alpha$recombination line at high latitudes. The variation of the H$\alpha$ intensityas a function of the Galactic latitude is also very similar to that of the FUVintensity. The results likely suggest that not only the original radiationsources of the H$\alpha$ and FUV backgrounds but also the radiative transfermechanisms responsible for the diffuse backgrounds are largely common.Therefore, we propose a scenario wherein the H$\alpha$ background at highlatitudes is mostly composed of two components, H$\alpha$ photons produced byin-situ recombination at the ionized regions around late OB stars anddust-scattered light of the H$\alpha$ photons originating from late OB stars.

Comparison of the Diffuse Halpha and FUV Continuum Backgrounds: On the Origins of the Diffuse Halpha Background