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The dependence of theoretical synthetic spectra on α-enhancement in young, binary stellar populations

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Byrne, C. M, Stanway, Elizabeth R., Eldridge, J. J., McSwiney, L. and Townsend, O. T. (2022) The dependence of theoretical synthetic spectra on α-enhancement in young, binary stellar populations. Monthly Notices of the Royal Astronomical Society, 512 (4). pp. 5329-5338. doi:10.1093/mnras/stac807 ISSN 0035-8711.

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Official URL: https://doi.org/10.1093/mnras/stac807

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Abstract

The enhancement of α elements such as oxygen is an important phase in the chemical evolution of the early Universe, with nebular material becoming enriched in these elements sooner than iron. Here, we present models which incorporate stellar spectra with α-enhanced compositions, focusing on the impact on the integrated light of young stellar populations, including those with large binary star fractions using the Binary Populations and Spectral Synthesis (BPASS) framework, while using Solar-scaled stellar evolution models. We find that broad spectrum outputs such as production of ionizing flux, the ultraviolet spectral slope and optical colours are only weakly affected by a change in

Item Type: Journal Article
Subjects: Q Science > QB Astronomy
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
Library of Congress Subject Headings (LCSH): Double stars , Double stars -- Evolution , Galaxies , Stars -- Spectra
Journal or Publication Title: Monthly Notices of the Royal Astronomical Society
Publisher: Oxford University Press
ISSN: 0035-8711
Official Date: June 2022
Dates:
DateEvent
June 2022Published
25 March 2022Available
21 March 2022Accepted
Volume: 512
Number: 4
Page Range: pp. 5329-5338
DOI: 10.1093/mnras/stac807
Status: Peer Reviewed
Publication Status: Published
Reuse Statement (publisher, data, author rights): This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: [year] [owner as specified on the article] Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
Access rights to Published version: Restricted or Subscription Access
Date of first compliant deposit: 24 March 2022
Date of first compliant Open Access: 28 March 2022
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
ST/T000406/1[STFC] Science and Technology Facilities Councilhttp://dx.doi.org/10.13039/501100000271
Marsden Grant Scheme Royal Society Te Aparāngi of New Zealand https://www.royalsociety.org.nz/

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