کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1774976 | 1021180 | 2008 | 17 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The Kuiper belt luminosity function from mR=21 to 26
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علوم فضا و نجوم
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The Kuiper belt luminosity function from mR=21 to 26 The Kuiper belt luminosity function from mR=21 to 26](/preview/png/1774976.png)
چکیده انگلیسی
We have performed an ecliptic imaging survey of the Kuiper belt with our deepest and widest field achieving a limiting flux of m(gâ²)50%â¼26.4, with a sky coverage of 3.0 square-degrees. This is the largest coverage of any other Kuiper belt survey to this depth. We detect 72 objects, two of which have been previously observed. We have improved the Bayesian maximum likelihood fitting technique presented in Gladman et al. [Gladman, B., Kavelaars, J.J., Nicholson, P.D., Loredo, T.J., Burns, J.A., 1998. Astron. J. 116, 2042-2054] to account for calibration and sky density variations and have used this to determine the luminosity function of the Kuiper belt. Combining our detections with previous surveys, we find the luminosity function is well represented by a single power-law with slope α=0.65±0.05 and an on ecliptic sky density of 1 object per square-degree brighter than mR=23.42±0.13. Assuming constant albedos, this slope suggests a differential size-distribution slope of 4.25±0.25, which is steeper than the Dohnanyi slope of 3.5 expected if the belt is in a state of collisional equilibrium. We find no evidence for a roll-over or knee in the luminosity function and reject such models brightward of m(R)â¼24.6.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Icarus - Volume 195, Issue 2, June 2008, Pages 827-843
Journal: Icarus - Volume 195, Issue 2, June 2008, Pages 827-843
نویسندگان
Wesley C. Fraser, J.J. Kavelaars, M.J. Holman, C.J. Pritchet, B.J. Gladman, T. Grav, R.L. Jones, J. MacWilliams, J.-M. Petit,