2018MNRAS.479.2728C

Query : 2018MNRAS.479.2728C

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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Number of rows : 7
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 V* RT Ser Sy* 17 39 51.9832062720 -11 56 38.818883580   15.979 14.649 14.461   M7e 131 0
2 V* HM Sge Sy* 19 41 57.0795884928 +16 44 39.805863828   12.37 10.99 12.217   M7 461 0
3 EM* AS 373 Sy* 19 57 05.0166505224 +39 49 36.076143036     11.50   10.592 M6/8e 594 0
4 V* RR Tel Sy* 20 04 18.5404499712 -55 43 33.153979080 9.93 11.33 10.81 11.689   M5e 550 0
5 V* PU Vul Sy* 20 21 13.3111130136 +21 34 18.697391652   11.13 10.87 11.697   M3+F2Ib 319 0
6 V* V1329 Cyg Sy* 20 51 01.2321742512 +35 34 54.111458316   13.722 13.122 13.767   M4IIIe 309 0
7 V* AG Peg Sy* 21 51 01.9739297352 +12 37 32.127939336   9.85 8.69     M3IIIe 534 0

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