The problem of dust attenuation in photometric decomposition of edge-on galaxies and possible solutions

Author:

Savchenko Sergey S123,Poliakov Denis M1,Mosenkov Aleksandr V4ORCID,Smirnov Anton A1,Marchuk Alexander A12ORCID,Il’in Vladimir B125ORCID,Gontcharov George A1ORCID,Seguine Jonah4,Baes Maarten6ORCID

Affiliation:

1. Central Astronomical Observatory at Pulkovo of RAS , Pulkovskoye Chaussee 65/1, 196140 St Petersburg, Russia

2. St Petersburg State University , 7/9 Universitetskaya nab., St Petersburg, 199034, Russia

3. Special Astrophysical Observatory, Russian Academy of Sciences , 369167 Nizhnij Arkhyz, Russia

4. Department of Physics and Astronomy , N283 ESC, Brigham Young University, Provo, UT 84602, USA

5. Saint Petersburg University of Aerospace Instrumentation , Bol. Morskaya ul. 67A, St Petersburg 190000, Russia

6. Sterrenkundig Observatorium, Universiteit Gent , Krijgslaan 281 S9, 9000 Gent, Belgium

Abstract

ABSTRACT The presence of dust in spiral galaxies affects the ability of photometric decompositions to retrieve the parameters of their main structural components. For galaxies in an edge-on orientation, the optical depth integrated over the line of sight is significantly higher than for those with intermediate or face-on inclinations, so it is only natural to expect that for edge-on galaxies, dust attenuation should severely influence measured structural parameters. In this paper, we use radiative transfer simulations to generate a set of synthetic images of edge-on galaxies that are then analysed via decomposition. Our results demonstrate that for edge-on galaxies, the observed systematic errors of the fit parameters are significantly higher than for moderately inclined galaxies. Even for models with a relatively low dust content, all structural parameters suffer offsets that are far from negligible. In our search for ways to reduce the impact of dust on retrieved structural parameters, we test several approaches, including various masking methods and an analytical model that incorporates dust absorption. We show that using such techniques greatly improves the reliability of decompositions for edge-on galaxies.

Funder

Russian Science Foundation

Publisher

Oxford University Press (OUP)

Subject

Space and Planetary Science,Astronomy and Astrophysics

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Deriving the intrinsic properties of M51 with radiative transfer models;Monthly Notices of the Royal Astronomical Society;2023-09-07

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3