Digital archival spectral data for Seyfert galaxies and their use in conjunction with modern FAI spectral data

IF 2.7 3区物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS

Experimental Astronomy Pub Date : 2023-11-22 DOI:10.1007/s10686-023-09916-6

Saule Shomshekova, Lyudmila Kondratyeva, Chingis Omarov, Ildana Izmailova, Adel Umirbayeva, Svetlana Moshkina

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Abstract

The paper presents a methodology for the digitization and processing of our own spectral data archive and the results of comparing the obtained data with those of modern observations. An Epson Perfection V850 Pro scanner with optional SilverFast8 software was used to scan photographic films. More than 2,000 archive spectra of Seyfert galaxies obtained in 1970–1990 with the AZT-8 telescope have been scanned to date (resolution 2400 dpi). The work describes the reduction of distortion for the scanned spectra using the program code, created in Python. Our code has been registered on the web service “GitHub” and a link to the code is given in the work. The results of digitization and subsequent spectra processing are presented in the example of the Seyfert galaxy Mrk 3. For the absolute calibration of the early spectra (Jan. 25, 1976) the radiation fluxes in the emission lines of [SII] were used. The lines were measured on the modern spectrogram obtained in 2023 on telescope AZT-8 (Mar. 14, 2023)

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塞弗特星系的数字档案光谱数据及其与现代FAI光谱数据的结合使用

本文介绍了我国自己的光谱数据档案的数字化和处理方法，并将所获得的数据与现代观测数据进行了比较。使用爱普生perfect V850 Pro扫描仪和可选的SilverFast8软件扫描摄影胶片。迄今为止，AZT-8望远镜在1970-1990年间获得了2000多个塞弗特星系的存档光谱(分辨率2400 dpi)。该工作描述了使用Python创建的程序代码减少扫描光谱的失真。我们的代码已经在web服务“GitHub”上注册，并且在工作中给出了代码的链接。以塞弗特星系Mrk 3为例，给出了数字化和后续光谱处理的结果。对早期光谱(1976年1月25日)的绝对定标，采用了[SII]发射谱线的辐射通量。这些线是在2023年用AZT-8望远镜(2023年3月14日)获得的现代谱图上测量的。

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来源期刊

Experimental Astronomy 地学天文-天文与天体物理

CiteScore

5.30

自引率

3.30%

发文量

审稿时长

6-12 weeks

期刊介绍： Many new instruments for observing astronomical objects at a variety of wavelengths have been and are continually being developed. Furthermore, a vast amount of effort is being put into the development of new techniques for data analysis in order to cope with great streams of data collected by these instruments. Experimental Astronomy acts as a medium for the publication of papers of contemporary scientific interest on astrophysical instrumentation and methods necessary for the conduct of astronomy at all wavelength fields. Experimental Astronomy publishes full-length articles, research letters and reviews on developments in detection techniques, instruments, and data analysis and image processing techniques. Occasional special issues are published, giving an in-depth presentation of the instrumentation and/or analysis connected with specific projects, such as satellite experiments or ground-based telescopes, or of specialized techniques.