估算银河系高纬度星际消光的拟合程序

IF 0.5 4区物理与天体物理 Q4 ASTRONOMY & ASTROPHYSICS

Open Astronomy Pub Date : 2021-01-01 DOI:10.1515/astro-2021-0022

A. Avdeeva, D. Kovaleva, O. Malkov, Alexey Nekrasov

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引用次数: 1

摘要

摘要我们根据盖亚EDR3天体测量和RAVE测量的光度和光谱数据，确定了选定的高纬度地区的星际灭绝。我们在每个区域用余割定律近似结果，从而导出不同视线的气压公式参数。参数在整个天空中的分布是用球面谐波来描述的。因此，我们得到了不同视线和距离太阳的星际视觉灭绝的数学描述，可用于估计星际灭绝。

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Fitting procedure for estimating interstellar extinction at high galactic latitudes

Abstract We determine the interstellar extinction in the selected high-latitude areas of the sky based on Gaia EDR3 astrometry and photometry and spectroscopic data from RAVE survey. We approximate the results with the cosecant law in each area thus deriving the parameters of the barometric formula for different lines of sight. The distribution of the parameters over the entire sky is described using spherical harmonics. As a result, we get a mathematical description of the interstellar visual extinction for different lines of sight and distances from the Sun which can be used for estimating interstellar extinction.

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来源期刊

Open Astronomy Physics and Astronomy-Astronomy and Astrophysics

CiteScore

1.30

自引率

14.30%

发文量

审稿时长

16 weeks

期刊介绍： The journal disseminates research in both observational and theoretical astronomy, astrophysics, solar physics, cosmology, galactic and extragalactic astronomy, high energy particles physics, planetary science, space science and astronomy-related astrobiology, presenting as well the surveys dedicated to astronomical history and education.