Submillimeter observations of IRAS and WISE debris disk candidates
Submillimeter observations of IRAS and WISE debris disk candidates
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IRAS 和 WISE 碎片盘候选物的亚毫米观测
DOI：
10.1051/0004-6361/201321726
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发表时间：
2013
影响因子：
6.5
通讯作者：
Bulger J
中科院分区：
文献类型：
--
作者：
Bulger J
加州理工学院亚毫米波天文台在350微米或450微米处观测到了一组由红外天文台或WISE超差确定的六个碎片盘候选者。其中五个目标- HIP 51658，HIP 68160，HIP 73512，HIP 76375和HIP 112460 -在25-100μm波段内具有来自IRAS冷尘埃的最大测量过量发射。单温黑体拟合这些源的过量粉尘排放预测350-450μm通量高于240 mJy。最后一个目标- HIP 73165 -在22μm处的WISE测量中显示出恒星光球层上方的微弱过量发射，表明存在温暖的星周尘埃。6个靶点均未检出，3σ上限范围为51-239 mJy。这些限制明显低于SED拟合的预期通量。研究了零探测的两个潜在原因：伴星和污染。为了研究伴星的可能影响，成像数据进行了分析，从新的自适应光学数据的ARIES仪器上的6.5米MMT和档案HST，双子座NIRI，POSS/2 MASS数据。图像对半径超过1-94 Au的所有恒星同伴都很敏感，内部限制取决于每个目标的距离和亮度。一个目标被标识为二进制系统，但分离太大而不会影响磁盘。虽然伴星的引力效应似乎不能解释亚毫米级的上限，但大多数IRAS过量目标显示出污染源的证据，这是基于对更高分辨率WISE和archivalSpitzer和Herschelimages的调查。最后，探索性的超毫米测量的智慧过剩源表明，这些目标周围存在的热尘埃是不匹配的一个可比的人口较冷，外尘埃。更广泛和更灵敏的WISE多余源的Herschel观测将建立在这个初步的例子，以进一步确定温暖的碎片盘源的特性。
A set of six debris disk candidates identified with IRAS or WISE excesses were observed at either 350μm or 450μm with the Caltech Submillimeter Observatory. Five of the targets – HIP 51658, HIP 68160, HIP 73512, HIP 76375, and HIP 112460 – have among the largest measured excess emission from cold dust from IRAS in the 25–100μm bands. Single temperature blackbody fits to the excess dust emission of these sources predict 350–450μm fluxes above 240 mJy. The final target – HIP 73165 – exhibits weak excess emission above the stellar photosphere from WISE measurements at 22μm, indicative of a population of warm circumstellar dust. None of the six targets were detected, with 3σupper limits ranging from 51–239 mJy. These limits are significantly below the expected fluxes from SED fitting. Two potential causes of the null detections were explored – companion stars and contamination. To investigate the possible influence of companion stars, imaging data were analyzed from new adaptive optics data from the ARIES instrument on the 6.5 m MMT and archival HST, Gemini NIRI, and POSS/2MASS data. The images are sensitive to all stellar companions beyond a radius of 1–94 AU, with the inner limit depending on the distance and brightness of each target. One target is identified as a binary system, but with a separation too large to impact the disk. While the gravitational effects of a companion do not appear to provide an explanation for the submm upper limits, the majority of the IRAS excess targets show evidence for contaminating sources, based on investigation of higher resolution WISE and archivalSpitzerandHerschelimages. Finally, the exploratory submm measurements of the WISE excess source suggest that the hot dust present around these targets is not matched by a comparable population of colder, outer dust. More extensive and more sensitiveHerschelobservations of WISE excess sources will build upon this initial example to further define the characteristics of warm debris disks sources.
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行星碎片盘中共振特征的几何形状
DOI：
--
发表时间：
2002
期刊：
影响因子：
--
作者：
M. Kuchner;M. Holman
通讯作者：
M. Holman
印在埃奇沃斯-柯伊伯带尘埃盘上的巨行星的签名
DOI：
10.1086/300938
发表时间：
1999
期刊：
The Astronomical Journal
影响因子：
--
作者：
J. Liou;H. Zook
通讯作者：
H. Zook
温暖、尘土飞扬的星周盘迅速消失
影响因子：
64.8
作者：
C. Melis;B. Zuckerman;J. H. Rhee;I. Song;S. Murphy;M. Bessell
通讯作者：
M. Bessell
影响因子：
64.8
作者：
Holland, WS;Greaves, JS;Robson, I
通讯作者：
Robson, I
Palomar 测试台干涉仪校准器目录
DOI：
10.1086/526548
发表时间：
2007
期刊：
The Astrophysical Journal Supplement Series
影响因子：
--
作者：
G. Belle;G. Belle;M. Creech;J. Coyne;A. Boden;R. Akeson;D. Ciardi;K. Rykoski;R. Thompson;B. Lane;for the Lsst Collaboration
通讯作者：
for the Lsst Collaboration