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

Abstract

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.

arXiv comment5 pages, 4 eps figures, accepted for publication in MNRAS

References in corpus (5)

• SCUBA: A common-user submillimetre camera operating on the James Clerk Maxwell Telescope
• Self-similarity and scaling behavior of IR emission from radiatively heated dust: I. Theory
• The evolutionary time scale of Sakurai's object: A test of convection theory?
• Freshly ionized matter around the final Helium shell flash object V4334 Sgr (Sakurai's object)
• Warm high velocity CO in the wind of Sakurai's Object (= V4334 Sgr)

Cited by in corpus (5)

• The onset of photoionization in Sakurai's Object (V4334 Sgr)
• The Spitzer IRS view of V4334 Sgr (Sakurai's Object)
• CO in the C1 globule of the Helix nebula with ALMA
• The infrared view of dust and molecules around V4334 Sgr (Sakurai's Object): a 20-year retrospective
• Non-thermal radio emission in Sakurai's Object