2008A&A...486..919M


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.09CEST17:12:13

2008A&A...486..919M - Astronomy and Astrophysics, volume 486, 919-921 (2008/8-2)

On the origin and evolutionary state of RZ Cassiopeiae, KO Aquilae, and S Equulei.

MENNEKENS N., DE GREVE J.-P., VAN RENSBERGEN W. and YUNGELSON L.R.

Abstract (from CDS):

We determine the present evolutionary state and the restrictions on the initial mass ratios of RZ Cas, KO Aql and S Equ. We compare mass-gaining stars with evolutionary models of single stars with the same mass and subsequently compare them with accretion tracks from simultaneous conservative binary evolution. The gainers are in an early main sequence stage (Xc>0.5), with KO Aql being almost unevolved (assuming quasi-thermal equilibrium). The initial donor/gainer mass ratios Mdi/Mgi must be larger than three to obtain the present mass and luminosity of the gainers.

Abstract Copyright:

Journal keyword(s): stars: binaries: eclipsing - stars: binaries: close - stars: individual: RZ Cas - stars: individual: KO Aql - stars: individual: S Equ

Simbad objects: 3

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Number of rows : 3

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* RZ Cas Al* 02 48 55.5096536172 +69 38 03.441544807   6.40 6.26     A3V 438 0
2 V* KO Aql Al* 18 47 10.7414847866 +10 45 49.248230525   8.51 8.40     A0V 106 0
3 V* S Equ Al* 20 57 12.8404519070 +05 04 49.422864634   8.43 8.37     B8/9IV/V 120 1

    Equat.    Gal    SGal    Ecl

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2020.07.09-17:12:13

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