Why do some young cool stars show spot modulation while others do not?

THE COLOR-PERIOD DIAGRAM AND STELLAR ROTATIONAL EVOLUTION—NEW ROTATION PERIOD MEASUREMENTS IN THE OPEN CLUSTER M34

(2011) Søren Meibom et al.   ASTROPHYSICAL JOURNAL

THE FACTORY AND THE BEEHIVE. I. ROTATION PERIODS FOR LOW-MASS STARS IN PRAESEPE

(2011) Marcel A. Agüeros et al.   ASTROPHYSICAL JOURNAL

The effect of M dwarf starspot activity on low-mass planet detection thresholds

(2011) J. R. Barnes et al.   MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY

Stellar rotation in the Hyades and Praesepe: gyrochronology and braking time-scale

(2011) P. Delorme et al.   MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY

New rotation periods in the open cluster NGC 1039 (M 34), and a derivation of its gyrochronology age

(2010) D. J. James et al.   ASTRONOMY & ASTROPHYSICS

THE EFFECT OF MAGNETIC ACTIVITY ON LOW-MASS STARS IN ECLIPSING BINARIES

(2010) Juan Carlos Morales et al.   ASTROPHYSICAL JOURNAL

Chromospheric activity among fast-rotating M dwarfs in the open cluster NGC 2516

(2010) R. J. Jackson et al.   MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY

Investigating coronal saturation and supersaturation in fast-rotating M-dwarf stars

(2010) R. D. Jeffries et al.   MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY

A large sample of photometric rotation periods for FGK Pleiades stars

(2010) J. D. Hartman et al.   MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY

How stellar activity affects the size estimates of extrasolar planets

(2009) S. Czesla et al.   ASTRONOMY & ASTROPHYSICS

On the magnetic topology of partially and fully convective stars

(2009) A. Reiners et al.   ASTRONOMY & ASTROPHYSICS

Starspots

(2009) Klaus G. Strassmeier   ASTRONOMY AND ASTROPHYSICS REVIEW

EVIDENCE FOR MAGNETIC FLUX SATURATION IN RAPIDLY ROTATING M STARS

(2009) A. Reiners et al.   ASTROPHYSICAL JOURNAL

STARSPOT JITTER IN PHOTOMETRY, ASTROMETRY, AND RADIAL VELOCITY MEASUREMENTS

(2009) V. V. Makarov et al.   ASTROPHYSICAL JOURNAL

The chromospheric emission of solar-type stars in the young open clusters IC 2391 and IC 2602

(2009) S. C. Marsden et al.   MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY

Large-scale magnetic topologies of mid M dwarfs★

(2008) J. Morin et al.   MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY

The Monitor project: rotation periods of low-mass stars in M50

(2008) Jonathan Irwin et al.   MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY