کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1764710 | 1020068 | 2014 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A model for the Balmer pseudocontinuum in spectra of type 1 AGNs
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علوم فضا و نجوم
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: A model for the Balmer pseudocontinuum in spectra of type 1 AGNs A model for the Balmer pseudocontinuum in spectra of type 1 AGNs](/preview/png/1764710.png)
چکیده انگلیسی
Here we present a new method for subtracting the Balmer pseudocontinuum in the UV part of type 1 AGN spectra. We calculate the intensity of the Balmer pseudocontinuum using the prominent Balmer lines in AGN spectra. We apply the model on a sample of 293 type 1 AGNs from SDSS database, and found that our model of Balmer pseudocontinuum + power law continuum very well fits the majority of AGN spectra from the sample, while in ∼∼15% of AGNs, the model fits reasonable the UV continuum, but a discrepancy between the observed and fitted spectra is noted. Some of the possible reasons for the discrepancy may be a different value for the optical depth in these spectra than used in our model or the influence of the intrinsic reddening.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Advances in Space Research - Volume 54, Issue 7, 1 October 2014, Pages 1347–1354
Journal: Advances in Space Research - Volume 54, Issue 7, 1 October 2014, Pages 1347–1354
نویسندگان
Jelena Kovačević, Luka Č. Popović, Wolfram Kollatschny,