New Local Volume Dwarf Galaxy Candidates from the DESI Legacy Imaging Surveys

IF 1.3 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Astrophysical Bulletin Pub Date : 2023-02-08 DOI:10.1134/S1990341322040058

I. D. Karachentsev, E. I. Kaisina

引用次数: 0

Abstract—We undertook a search for new dwarf galaxies in the vicinity of relatively isolated nearby galaxies with distances \(D < 12\) Mpc and stellar masses in the (\(2 \times {{10}^{{11}}}\)–\(3 \times {{10}^{8}} {{M}_{ \odot }}\)) interval, using the data from the DESI Legacy Imaging Surveys. Around the 46 considered Local Volume galaxies, \(67\) new candidates for satellites of these galaxies were found. About half of them are classified as spheroidal dwarfs of low surface brightness. The new galaxies are included in the Local Volume database (LVGDB), which now contains 1421 objects, being 63% more than the Updated Nearby Galaxy Catalog.

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来自DESI遗产成像调查的新本地体积矮星系候选者

摘要-我们利用来自DESI遗产成像调查的数据，在相对孤立的邻近星系附近寻找新的矮星系，距离为\(D < 12\) Mpc，恒星质量为\(2 \times {{10}^{{11}}}\) - \(3 \times {{10}^{8}} {{M}_{ \odot }}\)。在46个被认为是局部体积的星系周围，\(67\)这些星系的新候选卫星被发现了。其中大约一半被归类为低表面亮度的球状矮星。这些新星系被包括在本地体积数据库(LVGDB)中，该数据库目前包含1421个天体，占63个% more than the Updated Nearby Galaxy Catalog.

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Astrophysical Bulletin 地学天文-天文与天体物理

CiteScore

2.00

自引率

33.30%

发文量

审稿时长

>12 weeks

期刊介绍： Astrophysical Bulletin is an international peer reviewed journal that publishes the results of original research in various areas of modern astronomy and astrophysics, including observational and theoretical astrophysics, physics of the Sun, radio astronomy, stellar astronomy, extragalactic astronomy, cosmology, and astronomy methods and instrumentation.