The spectrum of V4334 Sgr (Sakurai's object) in August, 1998

Abstract

Theoretical spectral energy distributions are computed for a grid of hydrogen-deficient and carbon-rich model atmospheres with a range in T(eff) of 4000 - 5500 K and log g of 1.0 - 0.0, using the technique of opacity sampling, and taking into account continuous, atomic line and molecular band absorption. The energy distributions are compared with the spectrum of V4334 Sgr (Sakurai's object) of August 12, 1998 in the wavelength interval 300-1000 nm. This comparison yields an effective temperature of V4334 Sgr of T(eff) = 5250+/-200 K, and a value for the interstellar plus circumstellar reddening of E(B-V) = 1.3+/-0.1.

arXiv commentLaTeX, 6 pages, 7 ps-figures; accepted by Astronomy and Astrophysics

References in corpus (2)

• The rise and fall of V4334 Sgr (Sakurai's Object)
• Modeling the spectrum of V4334 Sgr (Sakurai's Object)

Cited by in corpus (4)

• Variable Star Network: World Center for Transient Object Astronomy and Variable Stars
• CO bands in V4334 Sgr (Sakurai's Object): the 12C/13C ratio
• Models of infrared spectra of Sakurai's Object (V4334 Sgr) in 1997
• Recombination of hot ionized nebulae: The old planetary nebula around V4334 Sgr (Sakurai's star)