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Astrophysics and Space Science
Article . 2002 . Peer-reviewed
License: Springer Nature TDM
Data sources: Crossref
https://dx.doi.org/10.48550/ar...
Article . 2001
License: arXiv Non-Exclusive Distribution
Data sources: Datacite
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Optical photometry of V4334 Sgr (Sakurai's Object)

Authors: Hilmar W. Duerbeck;

Optical photometry of V4334 Sgr (Sakurai's Object)

Abstract

The optical photometric evolution of the final helium flash object V4334 Sgr from 1994 to 2000 is described. The rise to optical maximum (1994 - 1996) is characterized by a continuous increase of color indices, indicating a slowly expanding, cooling pseudo-photosphere. This photosphere became stationary in 1997. In the following years, the object underwent brightness declines of increasing strength, which are similar in character to the ``red declines'' of R CrB stars. The fading of V4334 Sgr is more dramatic than any brightness decline of an R CrB star: at present, only 1/100000 of the visual light reaches the observer. Most radiation is absorbed by the dust envelope and re-radiated in the infrared. The sparse optical data of 2000 show that the obscuration has not increased in strength any more. The light curve of V4334 Sgr is similar to that of the final helium flash object V605 Aql which erupted in 1919.

LaTeX, 10 pages, 5 ps-figures, to be published in ApSS

Related Organizations
Keywords

Astrophysics (astro-ph), FOS: Physical sciences, Astrophysics

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
8
Average
Average
Average
Green