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The Pulsation of EE Camelopardalis
EE Cam is a previously little-studied δ Scuti pulsator withamplitudes between those of the HADS (high-amplitude δ Scuti star)group and average low-amplitude pulsators. Since the size of stellarrotation determines both which pulsation modes are selected by the staras well as their amplitudes, this star offers a great opportunity toexamine the astrophysical connections. Extensive photometricmeasurements covering several months were carried out. Fifteensignificant pulsation frequencies were extracted. The dominant mode at4.934 cycles day-1 was identified as a radial mode byexamining the phase shifts at different wavelengths. Medium-dispersionspectra yielded a v sin i value of 40 ± 3 km s-1. Thisshows that EE Cam belongs to the important transition region betweenHADSs and normal δ Scuti stars.
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Наблюдательные данные и астрометрия
| Созвездие: | Жираф |
| Прямое восхождение: | 05h30m35.52s |
| Склонение: | +63°57'17.9" |
| Видимая звёздная величина: | 8.143 |
| Расстояние: | 102.249 парсек |
| Собственное движение RA: | -19.8 |
| Собственное движение Dec: | 5.8 |
| B-T magnitude: | 8.763 |
| V-T magnitude: | 8.195 |
Каталоги и обозначения:
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