SIMBAD references

2018MNRAS.479.2728C - Mon. Not. R. Astron. Soc., 479, 2728-2742 (2018/September-2)

An illumination effect and an eccentric orbit for the symbiotic binary PU Vul revealed by 32 yr of optical spectroscopy.

CUNEO V.A., KENYON S.J., GOMEZ M.N., CHOCHOL D., SHUGAROV S.Y. and KOLOTILOV E.A.

Abstract (from CDS):

We analyse ∼32 yr of optical spectra and photometry for the symbiotic binary PU Vul. Light curves for the He I λ4471, He II λ4686, and H β λ4861 emission lines reveal an illumination effect, where the hot white dwarf ionizes the outflowing wind of the red giant, and evidence for an eccentric orbit with e >= 0.16. Along with the gradual appearance of high ionization emission from [Fe VII] and O VI, the relative fluxes of these lines suggest an increase in the effective temperature of the hot component, from roughly 105 K on JD 244 8000 (1990) to roughly 2 x 105 K on JD 245 5000 (2009). During this period, the luminosity of the hot component dropped by a factor of 4-6 to a current value of roughly 1000 L☉.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): binaries: spectroscopic - binaries: symbiotic - stars: individual: PU Vul

Status at CDS : Large table(s) will be appraised for possible ingestion in VizieR.

Simbad objects: 7

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