SIMBAD references

2012MNRAS.425.1308B - Mon. Not. R. Astron. Soc., 425, 1308-1311 (2012/September-2)

Characteristics of the closest known G-type exoplanet host 82 Eri.

BERNKOPF J., CHINI R., BUDA L.-S., DEMBSKY T., DRASS H., FUHRMANN K. and LEMKE R.

Abstract (from CDS):

We present a consistent model atmosphere analysis and evolutionary tracks for the very nearby G-type star 82 Eri that was most recently announced by Pepe et al. to harbour two or three super-Earth companions with orbital periods of 18, 40 and 90d. As a bright and high-velocity object, 82 Eri was already realized by Jan Hendrik Oort in his 1926 treatise to be of `probably different origin' and we confirm its being a member of the ancient thick-disc population on account of its outstanding iron-to-magnesium deficiency. Thus, in our immediate neighbourhood – only 6pc away – there exists a system of extremely old and probably rocky super-Earths that were already formed when the Milky Way was at its infancy, 12 or even 13 billion years in the past.

Abstract Copyright: 2012 The Authors Monthly Notices of the Royal Astronomical Society 2012 RAS

Journal keyword(s): stars: evolution - stars: fundamental parameters - stars: individual: 82 Eri - stars: planetary systems - stars: Population II

Simbad objects: 2

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