This loads a font easier to read for people with dyslexia.
This renders the document in high contrast mode.
This renders the document as white on black
This can help those with trouble processing rapid screen movements.
The Australia Telescope National Facility Colloquium
15:00-16:00 Wed 15 Aug 2012

Marsfield Lecture Theatre

Grazia Umana

(Catalina Astrophysical Observatory)

The nebulae around Luminous Blue Variables (LBVs): a multi-wavelengths approach-- Grazia Umana Colloquium

We present a study of a sample of Galactic LBV, aimed at contributing to a better understanding of the LBV phenomenon, by recovering the mass-loss history of the central object from the analysis of its associated nebula.
Physical properties of the Nebulae have been derived by a synergistic use of different techniques, at different wavelengths, to obtain high-resolution, multi-wavelength maps, tracing the different emitting components coexisting in the stellar ejecta: the ionized/neutral gas and the dust.
Evidence for asymmetric mass-loss and possible mutual interaction between gas and dust components have
been observed by the comparison of mid-IR and radio images of the nebulae, while important information on the gas and dust composition have been derived from mid-IR spectra.

More information


Ryan Shannon

Other Colloquia
What's On