Cometary Dust in the Debris Disks of HD 31648 and HD 163296: Two “Baby” β Pictoris Stars
Cometary Dust in the Debris Disks of HD 31648 and HD 163296: Two “Baby” β Pictoris Stars
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HD 31648和HD 163296碎片盘中的彗星尘埃：两颗“婴儿”β绘架星
DOI：
10.1086/306586
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发表时间：
1998
期刊：
影响因子：
--
通讯作者：
M. Hanner
中科院分区：
文献类型：
--
作者：
M. Sitko;C. Grady;D. Lynch;R. Russell;M. Hanner
围绕着前主序星HD 31648和HD 163296的碎片盘在3到14 μm之间被光谱观测到。这两颗恒星在10 μm处都有硅酸盐发射特征，类似于星星β Picture和在太阳系彗星中观察到的特征。该带的结构与橄榄石和辉石材料的混合物以及未指明来源的潜在连续体一致。硅酸盐带在大小和结构上的相似性表明，这些系统中的材料在颗粒被合并到彗星之前的处理历史与我们自己的太阳系相似。
The debris disks surrounding the pre-main-sequence stars HD 31648 and HD 163296 were observed spectroscopically between 3 and 14 μm. Both stars possess a silicate emission feature at 10 μm that resembles that of the star β Pictoris and those observed in solar system comets. The structure of the band is consistent with a mixture of olivine and pyroxene material, plus an underlying continuum of unspecified origin. The similarity in both size and structure of the silicate band suggests that the material in these systems had a processing history similar to that in our own solar system prior to the time that the grains were incorporated into comets.