The sub-millimetre evolution of V4334 Sgr (Sakurai's Object)

Details The sub-millimetre evolution of V4334 Sgr (Sakurai's Object) The sub-millimetre evolution of V4334 Sgr (Sakurai's Object)

2004-08-16

arxiv.org/abs/astro-ph/0408282v1

Astronomy and Astrophysics

Astrophysics

5 pages, 4 eps figures, accepted for publication in MNRAS

Scientific paper

10.1111/j.1365-2966.2004.08294.x

We report the results of monitoring of V4334 Sgr (Sakurai's Object) at 450 microns and 850 microns with SCUBA on the James Clerk Maxwell Telescope. The flux density at both wavelengths has increased dramatically since 2001, and is consistent with continued cooling of the dust shell in which Sakurai's Object is still enshrouded, and which still dominates the near-infrared emission. Assuming that the dust shell is optically thin at sub-millimetre wavelengths and optically thick in the near-infrared, the sub-millimetre data imply a mass-loss rate during 2003 of ~3.4(+/0.2)E-5 for a gas-to-dust ratio of 75. This is consistent with the evidence from 1-5micron observations that the mass-loss is steadily increasing.

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