Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003csss...12..781r&link_type=abstract
The Future of Cool-Star Astrophysics: 12th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun (2001 July 30 - August
Astronomy and Astrophysics
Astrophysics
Rotation
Scientific paper
We examine the early angular momentum history of stars in young clusters. We reported (Rebull et al., in preparation), based on 197 photometric periods in the Orion Flanking Fields and 83 photometric periods in NGC 2264, that PMS stars apparently do not conserve stellar angular momentum (J) as they evolve down their convective tracks, but instead evolve at nearly constant angular velocity (ω). This result is inconsistent with expectations that convective stars lacking disks should spin up as they contract, but consistent with disk-locking models.
We have now mined the literature for data on 12 additional clusters ranging in age from Orion to the Hyades, finding data for 1141 K & M stars such that we can plot stellar rotational velocity vs. radius. Taken together, these data reinforce our initial conclusion that PMS stars spanning ages ˜0.1-˜10 Myr do not appear to spin up in response to contraction, and further suggest that any spin up between 10 Myr and the ZAMS is modest (<2×) at best.
Makidon Russell B.
Rebull Luisa M.
Strom Stephen E.
Wolff Sidney C.
No associations
LandOfFree
On the Relationship Between Stellar Rotation and Radius in Young Clusters does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with On the Relationship Between Stellar Rotation and Radius in Young Clusters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the Relationship Between Stellar Rotation and Radius in Young Clusters will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-917147