کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
975374 933028 2007 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Radial velocities of open stellar clusters: A new solid constraint favouring Tsallis maximum entropy theory
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات فیزیک ریاضی
پیش نمایش صفحه اول مقاله
Radial velocities of open stellar clusters: A new solid constraint favouring Tsallis maximum entropy theory
چکیده انگلیسی
In the present study we apply a Tsallis maximum entropy distribution law to the study of the stellar residual radial velocity in a sample of 13 stellar open clusters. From a comparison between results obtained from the analysis based on Tsallis law and on the one based on the Maxwellian law we show that the generalized Tsallis distribution fits more closely the observed distribution of the stellar residual radial velocities for these stellar clusters. We have found clear evidences that the q-parameter in the Tsallis generalized distribution depends on stellar cluster ages for clusters older than 109yr. There is also some indication that q increases with cluster galactocentric distance. The results obtained in this work represent an additional solid constraint in the stellar astrophysics favoring the Tsallis maximum entropy theory.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica A: Statistical Mechanics and its Applications - Volume 384, Issue 2, 15 October 2007, Pages 507-515
نویسندگان
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