Academic Journal
Multisite campaign on the open cluster M67. II. Evidence for solar-like oscillations in red giant stars
| العنوان: | Multisite campaign on the open cluster M67. II. Evidence for solar-like oscillations in red giant stars |
|---|---|
| المؤلفون: | D. Stello, H. Bruntt, H. Kjeldsen, T. R. Bedding, T. Arentoft |
| المساهمون: | The Pennsylvania State University CiteSeerX Archives |
| المصدر: | http://arxiv.org/pdf/astro-ph/0702092v1.pdf. |
| سنة النشر: | 2007 |
| المجموعة: | CiteSeerX |
| الوصف: | Measuring solar-like oscillations in an ensemble of stars in a cluster, holds promise for testing stellar structure and evolution more stringently than just fitting parameters to single field stars. The most ambitious attempt to pursue these prospects was by Gilliland et al. (1993) who targeted 11 turn-off stars in the open cluster M67 (NGC 2682), but the oscillation amplitudes were too small (< 20 µmag) to obtain unambiguous detections. Like Gilliland et al. (1993) we also aim at detecting solar-like oscillations in M67, but we target red giant stars with expected amplitudes in the range 50–500 µmag and periods of 1 to 8 hours. We analyse our recently published photometry measurements, obtained during a six-week multisite campaign using nine telescopes around the world. The observations are compared with simulations and with estimated properties of the stellar oscillations. Noise levels in the Fourier spectra as low as 27 µmag are obtained for single sites, while the combined data reach 19 µmag, making this |
| نوع الوثيقة: | text |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.338.3640; http://arxiv.org/pdf/astro-ph/0702092v1.pdf |
| الاتاحة: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.338.3640 http://arxiv.org/pdf/astro-ph/0702092v1.pdf |
| Rights: | Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
| رقم الانضمام: | edsbas.8E2461AD |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |