用遗传算法绘制晚期星系的质量分布图。测试算法

IF 1.1 4区 物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS Revista Mexicana de Astronomia y Astrofisica Pub Date : 2023-10-01 DOI:10.22201/ia.01851101p.2023.59.02.07
Rodolfo de J. Zermeño, Ana M. Hidalgo-Gámez
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引用次数: 0

摘要

星系的旋转曲线包含了关于其动力学特性的丰富信息,其中质量分布是最重要的信息之一。近年来,用于估计盘状星系质量分布的旋转曲线拟合程序变得越来越复杂,提供了越来越可靠的结果。然而,时间成本和数据要求(例如,高分辨率近红外测光法)必须投入使用,这类研究仅限于小样本的星系。我们提出了一个简单的程序,可以用作研究大星系样本的良好的第一近似。它是基于一种参数拟合方法和一种最新的优化算法,称为无性遗传算法(AGA)。通过这个过程,我们能够在不确定的范围内重复以前发表的结果,这表明它将提供一个可靠的初步估计,适合于将其应用于大型星系样本。
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MASS PROFILES OF LATE GALAXIES USING A GENETIC ALGORITHM. I - TESTING THE ALGORITHM
The rotation curve of a galaxy contains a wealth of information about its dynamical properties, being the mass distribution one of the most important. The rotation curve fitting procedures used to estimate the mass profiles of disc galaxies have become more sophisticated over the years, providing ever more reliable results. However, the time-cost and data requirements (e.g. high-resolution NIR photometry) necessary to put to use some of them have restricted these kind of studies to small samples of galaxies. We propose a simple procedure that could be used as a good first approximation for the study of large galaxy samples. It is based on a parameter-fitting method along with a recent optimization algorithm, called the Asexual Genetic Algorithm (AGA). With this procedure, we were able to replicate previously published results, within uncertainties, suggesting that it will provide a reliable first estimation, suitable for its application to large galaxy samples.
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来源期刊
Revista Mexicana de Astronomia y Astrofisica
Revista Mexicana de Astronomia y Astrofisica 地学天文-天文与天体物理
CiteScore
1.30
自引率
10.00%
发文量
14
审稿时长
>12 weeks
期刊介绍: The Revista Mexicana de Astronomía y Astrofísica, founded in 1974, publishes original research papers in all branches of astronomy, astrophysics and closely related fields. Two numbers per year are issued and are distributed free of charge to all institutions engaged in the fields covered by the RMxAA.
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