The Shadow Echoes of UW Cen

Details The Shadow Echoes of UW Cen The Shadow Echoes of UW Cen

Nov 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aipc..804..180c&link_type=abstract

PLANETARY NEBULAE AS ASTRONOMICAL TOOLS: International Conference on Planetary Nebulae as Astronomical Tools. AIP Conference Pr

Astronomy and Astrophysics

Astronomy

Flare Stars, Planetary Nebulae, Flare Stars, Planetary Nebulae

Scientific paper

UW Cen is unique among the cool R Coronae Borealis (RCB) stars in having a visible circumstellar shell. The central star acts like a ``lighthouse,'' shining through gaps between the near-star dust clouds, and lighting up different portions of the outer nebula. We have obtained HST/ACS images of the UW Cen nebula taken at 5 epochs in 2004. We are using the light echo to calculate an accurate distance to UW Cen and to map out the pattern of dust clouds forming near the star.

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