کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8133425 | 1523416 | 2016 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A Study of Stellar Population Synthesis of Post-starburst Quasars
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
نجوم و فیزیک نجومی
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
We present a study of stellar population synthesis of a sample of 10 post-starburst quasars (PSQs) at z â¼ 0.3. These PSGs posses the spectral signatures of massive intermediate-aged stellar populations, making them potentially useful for studying the connections between the galactic nuclear activity and the host galaxy evolution. With the help of the stellar synthesis code STARLIGHT, we have determined the stellar population ages, black hole masses, and Eddington ratios of their host galaxies. We find that the PSQs have the black hole mass MBH â¼ 108Â Mâ, the bolometric luminosity of a few percent of Eddington luminosity, and the ages of host stellar populations from several hundred Myr to a few Gyr. The result may support a time delay existed between the merge-induced starburst and the quasar being triggered/becoming visible. The synthetical spectral energy distribution (SED) of the PSQs indicates that they are closely related with the Ultra Luminous Infrared Galaxies (ULIRGs), and for these PSQs, the derived infrared luminosity has attained the level of a luminous infrared galaxy, implying that very possibly, these quasars selected by their optical spectra are undergoing the evolution from ULIRGs to optical quasars.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chinese Astronomy and Astrophysics - Volume 40, Issue 3, JulyâSeptember 2016, Pages 291-304
Journal: Chinese Astronomy and Astrophysics - Volume 40, Issue 3, JulyâSeptember 2016, Pages 291-304
نویسندگان
Chu Zhang-hu, Gu Qiu-sheng,