Stellar Metallicities and Gradients in the Faint M31 Satellites Andromeda XVI and Andromeda XXVIII

Autor: Sal Wanying Fu, Daniel R. Weisz, Else Starkenburg, Nicolas Martin, Michelle L. M. Collins, Alessandro Savino, Michael Boylan-Kolchin, Patrick Côté, Andrew E. Dolphin, Nicolas Longeard, Mario L. Mateo, Francisco J. Mercado, Nathan R. Sandford, Evan D. Skillman

Publikováno v: The Astrophysical Journal, Vol 975, Iss 1, p 2 (2024)

We present ∼300 stellar metallicity measurements in two faint M31 dwarf galaxies, Andromeda XVI ( M _V = −7.5) and Andromeda XXVIII ( M _V = –8.8), derived using metallicity-sensitive calcium H and K narrowband Hubble Space Telescope imaging. T

Externí odkaz: https://doaj.org/article/f94c675453d84e2e8dacaf2092a9e26d

SN 2023ixf in Messier 101: Photo-ionization of Dense, Close-in Circumstellar Material in a Nearby Type II Supernova

Autor: W. V. Jacobson-Galán, L. Dessart, R. Margutti, R. Chornock, R. J. Foley, C. D. Kilpatrick, D. O. Jones, K. Taggart, C. R. Angus, S. Bhattacharjee, L. A. Braff, D. Brethauer, A. J. Burgasser, F. Cao, C. M. Carlile, K. C. Chambers, D. A. Coulter, E. Dominguez-Ruiz, C. B. Dickinson, T. de Boer, A. Gagliano, C. Gall, H. Gao, E. L. Gates, S. Gomez, M. Guolo, M. R. J. Halford, J. Hjorth, M. E. Huber, M. N. Johnson, P. R. Karpoor, T. Laskar, N LeBaron, Z. Li, Y. Lin, S. D. Loch, P. D. Lynam, E. A. Magnier, P. Maloney, D. J. Matthews, M. McDonald, H.-Y. Miao, D. Milisavljevic, Y.-C. Pan, S. Pradyumna, C. L. Ransome, J. M. Rees, A. Rest, C. Rojas-Bravo, N. R. Sandford, L. Sandoval Ascencio, S. Sanjaripour, A. Savino, H. Sears, N. Sharei, S. J. Smartt, E. R. Softich, C. A. Theissen, S. Tinyanont, H. Tohfa, V. A. Villar, Q. Wang, R. J. Wainscoat, A. L. Westerling, E. Wiston, M. A. Wozniak, S. K. Yadavalli, Y. Zenati

Publikováno v: The Astrophysical Journal Letters, Vol 954, Iss 2, p L42 (2023)

We present UV and/or optical observations and models of SN 2023ixf, a type II supernova (SN) located in Messier 101 at 6.9 Mpc. Early time ( flash ) spectroscopy of SN 2023ixf, obtained primarily at Lick Observatory, reveals emission lines of H i , H

Externí odkaz: https://doaj.org/article/4ff43153604a43dca8633eb8456e0f8e

Validating Stellar Abundance Measurements from Multiresolution Spectroscopy

Autor: Nathan R. Sandford, Daniel R. Weisz, Yuan-Sen Ting

Publikováno v: The Astrophysical Journal Supplement Series, Vol 267, Iss 1, p 18 (2023)

Large-scale surveys will provide spectroscopy for ∼50 million resolved stars in the Milky Way and Local Group. However, these data will have a high degree of heterogeneity and most will be low-resolution ( R < 10,000), posing challenges to measurin

Externí odkaz: https://doaj.org/article/dbc3ad52959a433e8b721714e930fde5

Exploring physical education teachers’ conceptualisations of health and wellbeing discourse across the four nations of the UK

Autor: S. Gray, S. Hardley, A. S. Bryant, O. Hooper, J. Stirrup, R. Sandford, D. Aldous, N. Carse

Publikováno v: Gray, S, Hardley, S, Bryant, A, Hooper, O, Stirrup, J, Sandford, R, Aldous, D & Carse, N 2023, ' Exploring physical education teachers’ conceptualisations of health and wellbeing discourse across the four nations of the UK ', Curriculum Studies in Health and Physical Education . https://doi.org/10.1080/25742981.2023.2176242

As a group of researchers representing England, Northern Ireland, Scotland and Wales, we previously carried out a comparative analysis of the health discourses evident within the physical education (PE) curriculum of each UK nation (Authors, 2022). W

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2732e93500a4bb8a69efbc476d8d9ff0
https://www.pure.ed.ac.uk/ws/files/327117446/GrayEtalCSHPE2023ExploringPhysicalEducationTeachersConceptualisations.pdf

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