SIMBAD references

2014MNRAS.441.3543B - Mon. Not. R. Astron. Soc., 441, 3543-3549 (2014/July-2)

Possible planets around A stars.


Abstract (from CDS):

Kepler photometry of A stars shows that a considerable fraction (about 19 per cent) have a peculiar feature in the periodogram. This feature consists of a broad peak, thought to be due to differential rotation in a spotted star, and a sharp peak at slightly higher frequency. The pattern clearly involves some widespread stellar property and the sharp peak implies a strictly coherent periodicity. We investigate the possibility that the periodicity is due to rotation, pulsation or an orbital effect. We argue that neither rotation nor pulsation can provide a suitable, testable, explanation. We suggest that the sharp feature could be due to a planet in synchronous orbit around the rapidly rotating, spotted A star, not necessarily in transit. Spectroscopic observations of sufficient precision are required to falsify this hypothesis.

Abstract Copyright: © 2014 The Author Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)

Journal keyword(s): stars: activity - stars: oscillations - planetary systems - stars: rotation

VizieR on-line data: <Available at CDS (J/MNRAS/441/3543): table1.dat>

Simbad objects: 176

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