INFRARED SPECTRAL OBSERVATION OF EIGHT BL LAC OBJECTS FROM THE SPITZER INFRARED SPECTROGRAPH

INFRARED SPECTRAL OBSERVATION OF EIGHT BL LAC OBJECTS FROM THE SPITZER INFRARED SPECTROGRAPH
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斯皮策红外光谱仪对八个 BL LAC 天体的红外光谱观测

DOI:
10.1088/0004-637x/732/1/22
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发表时间:
2011-05
影响因子:
4.9
通讯作者:
Shan, H. G.
Shan, H. G.
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Chen, P. S.;Shan, H. G.

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本文给出了8个BL Lac天体的Spitzer红外光谱仪(IRS)低分辨率光谱。可以看到,S5 0716+714的红外光谱在IRS区域显示了许多来自附近星系的发射特征。计算还表明,除了某些源在10 μm附近有硅酸盐吸收外,其它7个BL Lac天体的红外光谱中的发射线确实很弱或不存在。此外,忽略硅酸盐的功能,所有的光谱可以很好地拟合的幂律分布指示的同步辐射的发射机制,这些BL Lac对象在IRS区域。
The Spitzer Infrared Spectrograph (IRS) low-resolution spectra for eight BL Lac objects are presented in this paper. It can be seen that the infrared spectrum of S5 0716+714 shows in the IRS region many emission features that would be from a nearby galaxy. It is also shown that, except for the silicate absorptions around 10 μm for some sources, emission lines in the infrared spectra for the other seven BL Lac objects are indeed very weak or absent. In addition, ignoring the silicate feature, all spectra can be well fitted by a power-law distribution indicative of the emission mechanism of the synchrotron radiation for these BL Lac objects in the IRS region.
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发表时间: 1993
期刊: The Astrophysical Journal
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