SIMBAD references

2017MNRAS.465L..44K - Mon. Not. R. Astron. Soc., 465, L44-L48 (2017/February-2)

The way to a double degenerate: ∼15-20 per cent of 1 M <= M <= 8 M stars have an M > 1 M companion.


Abstract (from CDS):

We find that ∼15-20 per cent of A-type stars or red giants are bound with a massive companion (Msecondary > 1 M) in an intermediate wide orbit (0.5 < P < 5000 yr). These massive binaries are expected to form wide-orbit, double-degenerate systems (WODDs) within <=10 Gyr implying that ∼10 per cent of white dwarfs (WDs) are expected to be part of a WODD with a lighter WD companion. These findings are based on an analysis of previous adaptive optics observations of A-type stars and radial velocity measurements of red giants and shed light on the connection between multiplicity function of stars and detected double degenerates. We expect that Gaia will find ∼10 new WODDs within 20 pc from the sun. These results put a stringent constraint on the collision model of Type Ia supernovae in which triple stellar systems that include a WODD as the inner binary are required to be abundant.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): binaries: general - white dwarfs - white dwarfs

CDS comments: NZ-Zor-1 not identified (not enough information).

Simbad objects: 16

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