SIMBAD references

2009ApJ...699..933J - Astrophys. J., 699, 933-937 (2009/July-2)

On the metal richness of M dwarfs with planets.


Abstract (from CDS):

Knowledge of the metallicities of M dwarfs rests predominantly on the photometric calibration of Bonfils and collaborators, which predicts that M dwarfs in the solar neighborhood, including those with known planets, are systematically metal poor compared to their higher-mass counterparts. We test this prediction using a volume-limited sample of low-mass stars, together with a subset of M dwarfs with high-metallicity, F, G, and K wide binary companions. We find that the Bonfils et al. photometric calibration systematically underestimates the metallicities of our high-metallicity M dwarfs by an average of 0.32 dex. We derive a new photometric metallicity calibration and show that M dwarfs with planets appear to be systematically metal rich, a result that is consistent with the metallicity distribution of FGK dwarfs with planets.

Abstract Copyright:

Journal keyword(s): planetary systems - stars: abundances - stars: late-type

Simbad objects: 14

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