The Discovery of an Eruptive Variable in the LMC with Light Echoes

Details The Discovery of an Eruptive Variable in the LMC with Light Echoes The Discovery of an Eruptive Variable in the LMC with Light Echoes

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20915009s&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #150.09; Bulletin of the American Astronomical Society,

Astronomy and Astrophysics

Astronomy

Scientific paper

In 2002, the variable V838 Mon went through an extraordinary and unique outburst. The outburst was large amplitude, delta(V) 9, and very luminous. During the outburst its spectrum remained that of an extremely cool supergiant. A rapidly evolving set of light echoes around V838 Mon was discovered soon after the outburst.
We have discovered many echo complexes in the LMC using the SuperMACHO dataset and our difference imaging pipeline. In addition to the supernova light echos previously reported (see Welch et al. and Newman et al. posters), we have also found a light echo complex in the LMC around an AGB variable star which appears similar to V838 Mon. The source presently has an apparent magnitude of 13.5 and an absolute magnitude of at least M_R=-5. We present the difference images and available lightcurves for this new object.

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