Testing the Disk-Locking Paradigm: An Association Between U-V Excess and Rotation in NGC 2264
arXiv:astro-ph/0607206 · doi:10.1086/507525
Abstract
We present some results from a UVI photometric study of a field in the young open cluster NGC 2264 aimed, in part, at testing whether accretion in pre-main sequence stars is linked to rotation. We confirm that U-V excess is well correlated with H-alpha equivalent width for the stars in our sample. We show that for the more massive stars in the cluster sample (roughly 0.4-1.2 M_sun) there is also a significant association between U-V excess and rotation, in the sense that slow rotators are more likely to show excess U-band emission and variability. This constitutes significant new evidence in support of the disk-locking paradigm.
Accepted by ApJ Letters
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Cited by in corpus (9)
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- CSI 2264: Investigating rotation and its connection with disk accretion in the young open cluster NGC 2264
- UV variability and accretion dynamics in the young open cluster NGC 2264
- Rotational velocities of nearby young stars
- Rotational studies in the Orion Nebula Cluster: from solar mass stars to brown dwarfs
- Disk-Braking in Young Stars: Probing Rotation in Chamaeleon I and Taurus-Auriga
- New binaries from the SHINE survey
- Astrophysics in 2006
- Photometric variability of the pre-main sequence stars towards the Sh 2-190 region