2006MNRAS.365.1215Z


C.D.S. - SIMBAD4 rel 1.7 - 2020.11.25CET07:49:01

2006MNRAS.365.1215Z - Mon. Not. R. Astron. Soc., 365, 1215-1219 (2006/February-1)

Rotational velocities of the giants in symbiotic stars - I. D'-type symbiotics.

ZAMANOV R.K., BODE M.F., MELO C.H.F., PORTER J., GOMBOC A. and KONSTANTINOVA-ANTOVA R.

Abstract (from CDS):

We have measured the rotational velocities (v sini) of the mass donors in a number of D'-type symbiotic stars (SSs), using the cross-correlation function method. Four out of five D' SSs with known v sini appeared to be very fast rotators compared with the catalogues of v sini for the corresponding spectral types. At least three of these stars rotate at a substantial fraction (≳0.5) of the critical velocity. This means that at least in D'-type SSs the cool components rotate faster than isolated giants. If these binary stars are synchronized, their orbital periods should be relatively short (4-60 d). We also briefly discuss the possible origin of the rapid rotation and its connection with mass loss and dust formation.

Abstract Copyright: 2005 The Authors. Journal compilation © 2005 RAS

Journal keyword(s): binaries: symbiotic - stars: late-type - stars: rotation

CDS comments: StHα 190 = EM* StHA 190.

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 - 2021
#notes
1 WRAY 15-157 Sy* 08 06 34.8732150919 -28 32 01.221459066   10.0 7.4     G5III 23 0
2 EM* AS 201 PN 08 31 42.8825036476 -27 45 31.541479213   13 11.80     F9III 87 0
3 SV* HV 6516 LP* 14 15 59.6788456205 -61 53 50.268159401     12.00     F6V 39 0
4 HD 330036 Em* 15 51 15.92914 -48 44 58.5409   13.09 11.28     F5III-IV 152 1
5 EM* AS 269 Sy* 18 03 23.960 -32 42 24.94     14 13.65 12.74 B[e] 55 2
6 Hen 3-1591 Sy* 18 07 32.0162055140 -25 53 43.326635637   13.0 12.0     K1III: 39 0
7 EM* StHA 190 Sy* 21 41 44.8880611733 +02 43 54.409367196   11.13 10.22     G5e 41 0

    Equat.    Gal    SGal    Ecl

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2020.11.25-07:49:01

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