2010A&A...512A..80F


C.D.S. - SIMBAD4 rel 1.7 - 2019.12.10CET20:11:03

2010A&A...512A..80F - Astronomy and Astrophysics, volume 512, A80-80 (2010/3-1)

UV emission line shifts of symbiotic binaries.

FRIEDJUNG M., MIKOLAJEWSKA J., ZAJCZYK A. and ERIKSSON M.

Abstract (from CDS):

Relative and absolute emission line shifts have been previously found for symbiotic binaries, but their cause was not clear. This work aims to better understand the emission line shifts. Positions of strong emission lines were measured on archival UV spectra of Z And, AG Dra, RW Hya, SY Mus and AX Per and relative shifts between the lines of different ions compared. Profiles of lines of RW Hya and Z And were also examined. The reality of the relative shift between resonance and intercombination lines of several times ionised atoms was clearly shown except for AG Dra. This redshift shows a well defined variation with orbital phase for Z And and RW Hya. In addition the intercombination lines from more ionised atoms and especially OIV are redshifted with respect to those from less ionised atoms. Other effects are seen in the profiles. The resonance-intercombination line shift variation can be explained in quiescence by P Cygni shorter wavelength component absorption, due to the wind of the cool component, which is specially strong in inferior conjunction of this cool giant. The velocity stratification permits absorption of line emission. The relative intercombination line shifts may be connected with varying occultation of line emission near an accretion disk, which is optically thick in the continuum.

Abstract Copyright:

Journal keyword(s): binaries: symbiotic - stars: mass-loss - accretion, accretion disks

Simbad objects: 8

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Number of rows : 8

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 V* AX Per Sy* 01 36 22.6996835649 +54 15 02.411289057   11.45 10.67 11.04   M3IIIep+A0 274 1
2 V* TU Mus bL* 11 31 10.9242217305 -65 44 32.098796901 7.58 9.52 9.34 9.25   O8V(n)z+B0V(n) 148 0
3 V* SY Mus Sy* 11 32 09.9958009466 -65 25 11.458645897   11.97 10.20     M4 151 0
4 V* RW Hya Sy* 13 34 18.1290422733 -25 22 48.885732567   11.51 10.00     M1/2IIIe 186 0
5 V* AG Dra Sy* 16 01 41.0125687664 +66 48 10.131181273 11.50 11.06 9.74 8.52   K3IIIep 474 0
6 V* CI Cyg Al* 19 50 11.8344401438 +35 41 03.000692799   11.97 9.90     Bep+M5III 403 0
7 HD 218195 ** 23 05 12.93161 +58 14 29.3496 7.91 8.62 8.44     O8.5III 66 0
8 V* Z And Sy* 23 33 39.9551345052 +48 49 05.973842875 8.86 9.35 8.00     M2III+B1eq 499 0

    Equat.    Gal    SGal    Ecl

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2019.12.10-20:11:03

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