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

The SALT survey of chemically-peculiar hot subdwarfs

(Volume 92 - Année 2023 — Numéro 2 - Proceedings of the 10th Meeting on Hot Subdwarfs and Related Objects)
DOI: 10.25518/0037-9565.11209
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Abstract

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.

Keywords : surveys, stars: subdwarfs, stars: chemically-peculiar, stars: atmospheres, stars: evolution

Pour citer cet article

C. Simon Jeffery, Itumeleng Monageng, Brent Miszalski, Edward J. Snowdon, Laura J.A. Scott, Vincent M. Woolf & Matti Dorsh, «The SALT survey of chemically-peculiar hot subdwarfs», Bulletin de la Société Royale des Sciences de Liège [En ligne], Volume 92 - Année 2023, Numéro 2 - Proceedings of the 10th Meeting on Hot Subdwarfs and Related Objects, 29-38 URL : http://popups.ulg.be/0037-9565/index.php?id=11209.

A propos de : C. Simon Jeffery

Armagh Observatory and Planetarium, College Hill, Armagh BT61 9DG, United Kingdom. Corresponding author: simon.jeffery@armagh.ac.uk

A propos de : Itumeleng Monageng

Department of Astronomy, University of Cape Town, Private Bag X3, Rondebosch 7701, South Africa and South African Astronomical Observatory, PO Box 9, Observatory 7935, Cape Town, South Africa

A propos de : Brent Miszalski

Australian Astronomical Optics, Faculty of Science and Engineering, Macquarie University, North Ryde, NSW 2113, Australia

A propos de : Edward J. Snowdon

Armagh Observatory and Planetarium, College Hill, Armagh BT61 9DG, United Kingdom

A propos de : Laura J.A. Scott

Armagh Observatory and Planetarium, College Hill, Armagh BT61 9DG, United Kingdom

A propos de : Vincent M. Woolf

Physics Department, University of Nebraska at Omaha, 6001 Dodge St, Omaha, NE, 68182, USA

A propos de : Matti Dorsh

Dr. Karl Remeis-Observatory & ECAP, Friedrich-Alexander University Erlangen-Nürnberg, Sternwartstr. 7, 96049 Bamberg, Germany and Institut für Physik und Astronomie, Universität Potsdam, Haus 28, Karl-Liebknecht-Str. 24/25, 14476 Potsdam-Golm, Germany