SIMBAD references

2017ApJ...846...99M - Astrophys. J., 846, 99-99 (2017/September-2)

The starspots of HAT-P-11: evidence for a solar-like dynamo.

MORRIS B.M., HEBB L., DAVENPORT J.R.A., ROHN G. and HAWLEY S.L.

Abstract (from CDS):

We measure the starspot radii and latitude distribution on the K4 dwarf HAT-P-11 from Kepler short-cadence photometry. We take advantage of starspot occultations by HAT-P-11's highly misaligned planet to compare the spot size and latitude distributions to those of sunspots. We find that HAT-P-11's spots are distributed in latitude much like sunspots near the solar activity maximum, with a mean spot latitude of ≃16° ± 1°. The majority of HAT-P-11's starspots have physical sizes that closely resemble the sizes of sunspots at solar maximum. We estimate the mean spotted area coverage on HAT-P-11 to be 3–1+6 % , roughly two orders of magnitude greater than the typical solar spotted area.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): stars: activity - stars: magnetic field - starspots - sunspots - sunspots

Simbad objects: 7

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