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V838 Monocerotis: a Geometric Distance from Hubble Space Telescope Polarimetric Imaging of its Light Echo

Sparks, William, B.; Bond, Howard, E.; Cracraft, Misty; Levay, Zolt; Crause, Lisa, A.; Dopita, Michael; Henden, A A; Munari, U; Panagia, Nino; Starrfield, Sumner, G.; Sugerman, Ben


Following the outburst of the unusual variable star V838 Monocerotis in 2002, a spectacular light echo appeared. A light echo provides the possibility of direct geometric distance determination, because it should contain a ring of highly linearly polarized light at a linear radius of ct, where t is the time since the outburst. We present imaging polarimetry of the V838 Mon light echo, obtained in 2002 and 2005 with the Advanced Camera for Surveys on board the Hubble Space Telescope, which...[Show more]

CollectionsANU Research Publications
Date published: 2008
Type: Journal article
Source: Astrophysical Journal, The
DOI: 10.1088/0004-6256/135/2/605


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