CONCURRENT FORMATION OF CARBON AND SILICATE DUST IN NOVA V1280 SCO
CONCURRENT FORMATION OF CARBON AND SILICATE DUST IN NOVA V1280 SCO
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DOI：
10.3847/0004-637x/817/2/145
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发表时间：
2015-07
期刊：
影响因子：
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通讯作者：
I. Sakon;S. Sako;T. Onaka;T. Nozawa;Y. Kimura;T. Fujiyoshi;T. Shimonishi;F. Usui;H. Takahashi;R. Ohsawa;A. Arai;M. Uemura;T. Nagayama;B. Koo;T. Kozasa
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文献类型：
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作者：
I. Sakon;S. Sako;T. Onaka;T. Nozawa;Y. Kimura;T. Fujiyoshi;T. Shimonishi;F. Usui;H. Takahashi;R. Ohsawa;A. Arai;M. Uemura;T. Nagayama;B. Koo;T. Kozasa
我们介绍了爆发后约2000天内对粉尘的NOVA V1280 SCO进行的红外观测，即1272、1616和1947天的红外光谱分布的临时演变可以通过质量（6.6-8.7）;质量（3.4–4.3）×10-7m⊙的灰尘这两个粉尘的代表性为0.3-0.5μm，远离白色矮人，在整个时期的尘埃形成的情况下，尘埃形成的情况明显情节介质。
We present infrared multi-epoch observations of the dust-forming nova V1280 Sco over ∼2000 days from the outburst. The temporal evolution of the infrared spectral energy distributions at 1272, 1616, and 1947 days can be explained by the emissions produced by amorphous carbon dust of mass (6.6–8.7) × 10−8 M⊙ with a representative grain size of 0.01 μm and astronomical silicate dust of mass (3.4–4.3) × 10−7 M⊙ with a representative grain size of 0.3–0.5 μm. Both of these dust species travel farther away from the white dwarf without apparent mass evolution throughout those later epochs. The dust formation scenario around V1280 Sco suggested from our analyses is that the amorphous carbon dust is formed in the nova ejecta followed by the formation of silicate dust either in the expanding nova ejecta or as a result of the interaction between the nova wind and the circumstellar medium.