The Monitor project: rotation of low-mass stars in the open cluster NGC 2547

By J. Irwin, S. Hodgkin, Suzanne Aigrain, L. Hebb, J. Bouvier, Cathie Clarke, E. Moraux, D. Bramich. 2006

133 citations recorded by the source corpus.

We report on the results of an i-band time-series photometric survey of NGC2516 using the Cerro Tololo Inter-American Observatory (CTIO) 4-m Blanco telescope and 8k Mosaic-II detector, achieving better than 1 per cent photometric precision per data point over 15 0.25d, and the slowest rotators for M ~ 0.5Msolar following a flatter relation closer to P ~ constant. Models of the rotational evolution were investigated, finding that the evolution of the fastest rotators was well reproduced by a conventional solid body model with a mass-dependent saturation velocity, whereas core-envelope decoupling was needed to reproduce the evolution of the slowest rotators. None of our models were able to simultaneously reproduce the behaviour of both populations.

Subfields: Astronomy and Astrophysics

View Paper: https://www.semanticscholar.org/paper/a5d1473afc960ce51f77260f65eaaed2a5656464

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In Astronomy and Astrophysics

1. D. Charbonneau
2. J. Irwin
3. J. Winn
4. C. Burke
5. T. Mazeh
6. Z. K. Berta
7. Jon Fortney
8. Emilio E. Falco

Citations in the corpus

• ON THE ANGULAR MOMENTUM EVOLUTION OF FULLY CONVECTIVE STARS: ROTATION PERIODS FOR FIELD M-DWARFS FROM THE MEarth TRANSIT SURVEY (2010, methodology): “Method In order to properly account for the “common mode” systematic effect and the magnitude offsets between the two sides of the meridian, we adapt the method described in Irwin et al. (2006), which uses least-squares fitting of sinusoids to the observed time-series m(t).”
• A PHOTOMETRIC VARIABILITY SURVEY OF FIELD K AND M DWARF STARS WITH HATNet (2009, background): “While there are rich samples of rotation periods for K and M dwarfs in open clusters with ages 600 Myr (Irwin et al. 2006, 2007, 2009a; Meibom et al. 2009; Hartman et al. 2009), the data for older K and M dwarfs are quite sparse.”