Testing the AGN-Starburst Connection in Seyfert Galaxies

Testing the AGN-Starburst Connection in Seyfert Galaxies
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测试 Seyfert 星系中 AGN-星爆连接

DOI:
10.1086/317792
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发表时间:
2000
期刊:
The Astrophysical Journal
影响因子:
--
通讯作者:
C. Engelbracht
C. Engelbracht
中科院分区:
--
文献类型:
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作者:
V. Ivanov;A. Alonso;G. Rieke;C. Groppi;M. Rieke;C. Engelbracht

文献摘要

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我们使用 2.3 μm 处的 CO 带来限制 Seyfert 星系中心区域年轻恒星的数量。我们报告了 46 个赛弗特星系的新 CO 带光谱。在大多数情况下,观测到的二氧化碳指数似乎因非恒星成分(最有可能是活跃核周围的温暖尘埃)的存在而被稀释。我们使用 JHKL 孔径光度测量来估计 2.3 μm 处的非恒星贡献。我们成功地校正了 16 个不以非恒星成分为主的星系的 CO 带稀释度。与在椭圆星系和纯星爆发星系中测量的CO指数相比,我们没有发现大多数这些星系中存在强星爆发的证据。
We use the CO band at 2.3 μm to constrain the populations of young stars in the central regions of Seyfert galaxies. We report new CO band spectroscopy of 46 Seyfert galaxies. In most cases, the observed CO indices appear diluted by the presence of a nonstellar component (most likely, warm dust surrounding the active nucleus). We used JHKL aperture photometry to estimate the nonstellar contribution at 2.3 μm. We successfully corrected the CO band for the dilution for 16 galaxies which were not dominated by the nonstellar component. Comparing with CO indices measured in elliptical and purely starbursting galaxies, we find no evidence for strong starbursts in the majority of these galaxies.