Spectroscopic survey of Kepler stars – II. FIES/NOT observations of A- and F-type stars
Article
Article Title | Spectroscopic survey of Kepler stars – II. FIES/NOT observations of A- and F-type stars |
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ERA Journal ID | 1074 |
Article Category | Article |
Authors | Niemczura, E. (Author), Polinska, M. (Author), Murphy, S. J. (Author), Smalley, B. (Author), Kolaczkowski, Z. (Author), Jessen-Hansen, J. (Author), Uytterhoeven, K. (Author), Lykke, J. M. (Author), Trivino Hage, A. (Author) and Michalska, G. (Author) |
Journal Title | Monthly Notices of the Royal Astronomical Society |
Journal Citation | 470 (3), pp. 2870-2889 |
Number of Pages | 20 |
Year | 2017 |
Publisher | Oxford University Press |
Place of Publication | United Kingdom |
ISSN | 0035-8711 |
1365-2966 | |
Digital Object Identifier (DOI) | https://doi.org/10.1093/mnras/stx1256 |
Web Address (URL) | https://academic.oup.com/mnras/article/470/3/2870/3847504 |
Abstract | We have analysed high-resolution spectra of 28 A and 22 F stars in the Kepler field, observed using the Fibre-Fed Échelle Spectrograph at the Nordic Optical Telescope. We provide spectral types, atmospheric parameters and chemical abundances for 50 stars. Balmer, Fe I and Fe II lines were used to derive effective temperatures, surface gravities and microturbulent velocities. We determined chemical abundances and projected rotational velocities using a spectrum synthesis technique. Effective temperatures calculated by spectral energy distribution fitting are in good agreement with those determined from the spectral line analysis. The stars analysed include chemically peculiar stars of the Am and λ Boo types, as well as stars with approximately solar chemical abundances. The wide distribution of projected rotational velocity, vsin i, is typical for A and F stars. The microturbulence velocities obtained are typical for stars in the observed temperature and surface gravity ranges. Moreover, we affirm the results of Niemczura et al. that Am stars do not have systematically higher microturbulent velocities than normal stars of the same temperature. |
Keywords | Stars: abundances; Stars: chemically peculiar; Stars: general; Stars: rotation; Astrophysics - Solar and Stellar Astrophysics |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Public Notes | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2017 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
Byline Affiliations | Wroclaw University, Poland |
Adam Mickiewicz University, Poland | |
University of Sydney | |
Keele University, United Kingdom | |
Aarhus University, Denmark | |
Institute of Astrophysics of the Canary Islands, Spain | |
University of Copenhagen, Denmark | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q73v7/spectroscopic-survey-of-kepler-stars-ii-fies-not-observations-of-a-and-f-type-stars
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