Academic Journal
THE ANGULAR DIAMETER OF k BOÖTIS
| العنوان: | THE ANGULAR DIAMETER OF k BOÖTIS |
|---|---|
| المؤلفون: | David R. Ciardi, Gerard T. Van Belle, Andrew F. Boden, T. Ten Brummelaar, H. A. Mcalister, W. G. Bagnuolo, P. J. Goldfinger, J. Sturmann, L. Sturmann, N. Turner, D. H. Berger, R. R. Thompson, S. T. Ridgway |
| المساهمون: | The Pennsylvania State University CiteSeerX Archives |
| المصدر: | http://joy.chara.gsu.edu/CHARA/Papers/Paper10.5.pdf. |
| سنة النشر: | 2005 |
| المجموعة: | CiteSeerX |
| الوصف: | Using the CHARA Array and the Palomar Testbed Interferometer, the chemically peculiar star k Boötis has been spatially resolved.We havemeasured the limb darkened angular diameter to be LD 0:533 0:029mas, correspond-ing to a linear radius of R? 1:70 0:10R. Themeasured angular diameter yields an effective temperature for kBoo of TeA 8887 242 K. Based on literature surface gravity estimates spanning log g 4:0 4:2 cm s2, we have derived a stellar mass range of M? 1:1 1:7M. For a given surface gravity, the linear radius uncertainty contributes approximately (M?) 0:1 0:2M to the total mass uncertainty. The uncertainty in themass (i.e., the range of derived masses) is primarily a result of the uncertainty in the surface gravity. The upper bound of our derived mass range (log g 4:2, M? 1:7 0:2 M) is consistent with 100–300 Myr solar metallicity evolutionary models. The mid-range of our derived masses (log g 4:1, M? 1:3 0:2 M) is consistent with 2–3 Gyr metal-poor evolutionary models. A more definitive surface gravity determination is required to determine a more precise mass for k Boo. Subject headinggs: circumstellar matter — infrared: stars — stars: fundamental parameters — stars: individual (k Boötis) — techniques: interferometric 1. |
| نوع الوثيقة: | text |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.572.7675; http://joy.chara.gsu.edu/CHARA/Papers/Paper10.5.pdf |
| الاتاحة: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.572.7675 http://joy.chara.gsu.edu/CHARA/Papers/Paper10.5.pdf |
| Rights: | Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
| رقم الانضمام: | edsbas.C9BA5F44 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |