Empirical Near-UV Line Parameters from Hubble Spectroscopy

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Scientific paper

Laboratory astrophysics is critical to our Hubble Treasury program GO-9455, whose goal is to characterize the age and metallicity of old stellar systems. We are calculating from first principles1 the near UV Spectra of solar-type stars, for which laboratory identifications of atomic lines become incomplete. We will continue our empirical pseudo-identifications of these unknown near-UV lines using observed echelle spectra of individual stars. A much better solution would be additional near-UV laboratory identifications for neutral and first-ionized species of iron-peak elements.

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