2018MNRAS.478..568L


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.16CEST12:06:00

2018MNRAS.478..568L - Mon. Not. R. Astron. Soc., 478, 568-574 (2018/July-3)

Broad absorption line symbiotic stars: highly ionized species in the fast outflow from MWC 560.

LUCY A.B., KNIGGE C. and SOKOLOSKI J.L.

Abstract (from CDS):

In symbiotic binaries, jets and disc winds may be integral to the physics of accretion on to white dwarfs from cool giants. The persistent outflow from symbiotic star MWC 560 (≡V694 Mon) is known to manifest as broad absorption lines (BALs), most prominently at the Balmer transitions. We report the detection of high-ionization BALs from C IV, Si IV, N V, and He II in International Ultraviolet Explorer spectra obtained on 1990 April 29-30, when an optical outburst temporarily erased the obscuring 'iron curtain' of absorption troughs from Fe II and similar ions. The C IV and Si IV BALs reached maximum radial velocities at least 1000 km s–1 higher than contemporaneous Mg II and He II BALs; the same behaviours occur in the winds of quasars and cataclysmic variables. An iron curtain lifts to unveil high-ionization BALs during the P Cygni phase observed in some novae, suggesting by analogy a temporary switch in MWC 560 from persistent outflow to discrete mass ejection. At least three more symbiotic stars exhibit broad absorption with blue edges faster than 1500 km s–1; high-ionization BALs have been reported in AS 304 (≡V4018 Sgr), while transient Balmer BALs have been reported in Z And and CH Cyg. These BAL-producing fast outflows can have wider opening angles than has been previously supposed. BAL symbiotics are short-time-scale laboratories for their giga-scale analogues, broad absorption line quasars (BALQSOs), which display a similarly wide range of ionization states in their winds.

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

Journal keyword(s): accretion, accretion discs - binaries: symbiotic - stars: individual: (MWC 560, AS 304) - stars: winds, outflows - quasars: absorption lines

Simbad objects: 9

goto Full paper

goto View the reference in ADS

Number of rows : 9

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9757 1
2 Mrk 1502 Sy1 00 53 34.9326560879 +12 41 35.927159668   14.41 14.03     ~ 1061 1
3 EM* MWC 560 Sy* 07 25 51.2841922233 -07 44 08.078237799   10.01 9.70 10.60   M4ep+Beq 188 0
4 [VV2006] J140125.6+581650 QSO 14 01 25.5811544984 +58 16 50.621897958   20.11 19.70     ~ 21 0
5 [VV2006] J172341.0+555340 QSO 17 23 41.0832194376 +55 53 40.529486149   20.52 19.31     ~ 28 0
6 CD-28 14567 Sy* 18 25 26.85 -28 35 57.2     13     Be+M4e 42 1
7 V* CH Cyg Sy* 19 24 33.0697620341 +50 14 29.057625755 8.14 8.77 7.08   5.345 M7IIIab+Be 745 0
8 V* Z And Sy* 23 33 39.9551345051 +48 49 05.973842875 8.86 9.35 8.00     M2III+B1eq 505 0
9 V* R Aqr Sy* 23 43 49.4629939776 -15 17 04.184232557   8.823 7.683 9.37   M6.5-8.5e 750 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2018MNRAS.478..568L and select 'bookmark this link' or equivalent in the popup menu


2021.04.16-12:06:00

© Université de Strasbourg/CNRS

    • Contact