SALT对化学上特殊的热亚矮星的调查

Q3 Multidisciplinary

Bulletin de la Societe Royale des Sciences de Liege Pub Date : 2023-01-01 DOI:10.25518/0037-9565.11209

C. Simon Jeffery, Itumeleng Monageng, Brent Miszalski, Edward J. Snowdon, Laura J.A. Scott, Vincent M. Woolf, Matti Dorsh

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引用次数: 0

摘要

南非大型望远镜(SALT)对300个化学性质奇特的热亚矮星样本进行了调查，以期探索各种恒星之间的进化途径和联系。在中等分辨率下对整个样品进行了观测，以提供分类和大气参数，并在高分辨率下对较小的样品进行了详细的化学丰度分析。第一种方法提供了大量富含氦的sdO恒星样本，但也导致了热白矮星、前白矮星、重金属亚矮星和极端氦恒星的重大发现。本文概述了该项目的现状。

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The SALT survey of chemically-peculiar hot subdwarfs

The Southern African Large Telescope (SALT) has surveyed a sample of 300 chemically-peculiar hot subdwarfs with a view to explore evolutionary pathways and connections between a large variety of stars. Observations have been obtained for the entire sample at intermediate resolution to provide classifications and atmosphere parameters, and a smaller sample at high resolution to permit detailed chemical abundance analyses. The first has provided a substantial sample of extremely helium-rich sdO stars, but has also led to significant discoveries of hot white dwarfs, pre-white dwarfs, heavy-metal subdwarfs and extreme helium stars. This paper provides an overview of the current status of the project.

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来源期刊

Bulletin de la Societe Royale des Sciences de Liege Multidisciplinary-Multidisciplinary

CiteScore

0.90

自引率

0.00%

发文量

期刊介绍： The ‘Société Royale des Sciences de Liège" (hereafter the Society) regularly publishes in its ‘Bulletin" original scientific papers in the fields of astrophysics, biochemistry, biophysics, biology, chemistry, geology, mathematics, mineralogy or physics, following peer review approval.