A SUBARU PENCIL-BEAM SEARCH FOR mR ∼ 27 TRANS-NEPTUNIAN BODIES
A SUBARU PENCIL-BEAM SEARCH FOR mR ∼ 27 TRANS-NEPTUNIAN BODIES
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斯巴鲁铅笔束搜索 MR 〜 27 个跨海王星天体
DOI：
10.1088/0004-637x/696/1/91
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
M. Holman
中科院分区：
文献类型：
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作者：
C. Fuentes;M. George;M. Holman
我们提出的结果档案搜索的跨海王星对象（TNOs）在黄道领域观察斯巴鲁在2002年。搜索的深度使我们能够找到20个新的TNO，其幅度在R = 24和27之间。我们用双幂律模型来拟合数据;明亮和暗淡的幂律指数最可能的值是α1 = 0.73+0.08−0.09和α2 = 0.20+0.12−0.14; R = 23时的微分数密度是σ23 = 1.46+0.14−0.12，破裂星等是Req = 25.0+0.8−0.6。这是迄今为止对TNO光度函数中断的最精确测量。假设4%的相对密度，粒径分布的突变对应于D = 90 ± 30 km的直径。
We present the results of an archival search for trans-Neptunian objects (TNOs) in an ecliptic field observed with Subaru in 2002. The depth of the search allowed us to find 20 new TNOs with magnitudes between R = 24 and 27. We fit a double power-law model to the data; the most likely values for the bright and faint power-law exponents are α1 = 0.73+0.08−0.09 and α2 = 0.20+0.12−0.14; the differential number density at R = 23 is σ23 = 1.46+0.14−0.12 and the break magnitude is Req = 25.0+0.8−0.6. This is the most precise measurement of the break in the TNO luminosity function to date. The break in the size distribution corresponds to a diameter of D = 90 ± 30 km assuming a 4% albedo.