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Rotational Velocities of Late-Type Stars
A calibration based on the results of Gray has been used to determineprojected rotational velocities for 133 bright stars with spectral typesof F, G, or K, most of which appear in {\it The Bright Star Catalogue}.The vast majority have {\it v} sin {\it i} $\leq$ 10 km s$^{-1}$ and,thus, are slow rotators. With the new calibration, projected rotationalvelocities have been determined for a sample of 111 late-type stars,most of which are chromospherically active. Some of the stars have hadtheir rotational velocities measured for the first time. (SECTION:Stars)
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Gözlemler ve gökölçümü verileri
| Takýmyýldýz: | Kupa |
| Sað Açýklýk: | 11h33m20.89s |
| Yükselim: | -23°08'13.0" |
| Görünürdeki Parlaklýk: | 8.543 |
| Uzaklýk: | 800 parsek |
| özdevim Sað Açýklýk: | -5 |
| özdevim Yükselim: | 17.6 |
| B-T magnitude: | 10.477 |
| V-T magnitude: | 8.703 |
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NEWS@SKY (Science&Space News)
