Daniel E. Welty

Interstellar Matter -- From the Solar System to QSO Absorption-Line Systems

Most of my research has involved the use of high resolution optical and UV spectra to gain a detailed understanding of the interstellar gas and dust in various local environments, and then to apply that knowledge to the interpretation of the metal absorption lines seen in the spectra of distant QSO's. I have been involved in a number of projects related to those overall aims:

• Why?
• Galactic ISM
  • High-Resolution Optical Surveys
  • Detailed Line of Sight Studies
  • Translucent Clouds
  • Temporal Variability / Small-Scale Structure
  • High-Velocity Gas
  • Heavy Elements / Depletions
  • Diffuse Interstellar Bands
  • Local ISM
  • Catalogues
    • High-Resolution Spectra -- Atomic Lines
    • High-Resolution Spectra -- Molecular Lines
    • Medium-Resolution Spectra
    • ARCES Spectra
    • Column Densities
• Magellanic Clouds ISM
  • Large Magellanic Cloud
  • Small Magellanic Cloud
  • Optical and UV Surveys
  • Catalogues
    • Optical & UV spectra
    • Column Densities
• ISM in More Distant Systems
  • Extragalactic Supernovae
  • DLA and sub-DLA Elemental Abundances (Gas & Dust)
    • Catalogue of QSOALS Abundances
  • Lyman Alpha Forest

Check here for information about:

• Vitae
• Bibliography (refereed publications)
• Preprints
• Software Packages
  • Profile Fitting (FITS6P)
  • Remote Observing with IUE
  • Spectrum Analysis (specp)
  • Semi-automated DIB Measurement (arcexam)
• Observing Experience (with links to observatories)

Or here for:

• Stephen's poems

The contents of this page (and those linked to it) do not represent the Space Telescope Science Institute, NASA, or AURA.

Last modified 08 Jun 2020