The Effect of Binarity on Stellar Rotation: Beyond the Reach of Tides
We present a comparison between the rotation period distributions of solar-type single stars and primary stars in close binaries (0.1 AU [unk] a [unk] 5 AU) in the young ( similar to 150 Myr) open cluster M35 (NGC 2168). We find that the primary stars in the close binaries rotate faster than the sin...
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| Veröffentlicht in: | The Astrophysical journal 2007-08, Vol.665 (2), p.L155-L158 |
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| creator | Meibom, Søren Mathieu, Robert D Stassun, Keivan G |
| description | We present a comparison between the rotation period distributions of solar-type single stars and primary stars in close binaries (0.1 AU [unk] a [unk] 5 AU) in the young ( similar to 150 Myr) open cluster M35 (NGC 2168). We find that the primary stars in the close binaries rotate faster than the single stars, on average. The differences in the means and medians between the period distributions are statistically significant at the 99.9% level or higher. The faster rotation among the primary stars in close binaries is not due to tidal synchronization as tidally evolved stars are excluded from the comparison. We discuss this result in the context of different early-evolution accretion processes and star-disk interactions for single stars and stars in close binaries. |
| doi_str_mv | 10.1086/521437 |
| format | Article |
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| title | The Effect of Binarity on Stellar Rotation: Beyond the Reach of Tides |
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