Accès ouvert
2023
article
OpenAlex
Emily Strawn, Noel D. Richardson, A. F. J. Moffat, Noura Ibrahim et autres
ABSTRACT The binary η Carinae is the closest example of a very massive star, which may have formed through a merger during its Great Eruption in the mid-19th century. We aimed to confirm and improve the kinematics using a spectroscopic data set …
us, ca, br, gb, de
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Accès ouvert
2022
preprint
OpenAlex
Emily Strawn, Noel D. Richardson, A. F. J. Moffat, Nour Ibrahim et autres
The binary eta Carinae is the closest example of a very massive star, which may have formed through a merger during its Great Eruption in the mid-nineteenth century. We aimed to confirm and improve the kinematics using a spectroscopic data set taken …
Accès ouvert
2022
article
OpenAlex
Carlie Fowler, John Pluff, Joshua D. Thomas
Abstract Binary star system HD 2019 was studied by the David Dunlap Observatory between 1935 and 1947. From the spectroscopic data obtained, the orbital elements of the system were defined. Between then and now, there have been no updated studies of this …
us
(code pays fourni par la source)
2021
conference-abstract
OpenAlex
Scott Lee, Joshua D. Thomas
2021
conference-abstract
OpenAlex
Joshua D. Thomas, Jordan Shane Thomas, Indranil Bhattacharya
Accès ouvert
2021
conference-paper
OpenAlex
Scott Lee, Joshua D. Thomas
The strength of the humerus bone is evaluated for 17 species of extant birds with varying mass and flight styles by measuring its section modulus. The least massive bird is Regulus calendula (0.0058 kg) while the most massive is Cygnus olor (8.959 …
us
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Accès ouvert
2021
article
OpenAlex
Noel D. Richardson, O. Thizy, Jon E. Bjorkman, A. C. Carciofi et autres
ABSTRACT The bright and understudied classical Be star HD 6226 has exhibited multiple outbursts in the last several years during which the star grew a viscous decretion disc. We analyse 659 optical spectra of the system collected from 2017 to 2020, along …
us, br, ru, kz
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2021
article
OpenAlex
Benjamin J. Galluzzo, Michael W. Ramsdell, Joshua D. Thomas, Kathleen Kavanagh et autres
Accès ouvert
2021
article
OpenAlex
Joshua D. Thomas, Noel D. Richardson, J. J. Eldridge, Gail Schaefer et autres
ABSTRACT We present updated orbital elements for the Wolf–Rayet (WR) binary WR 140 (HD 193793; WC7pd + O5.5fc). The new orbital elements were derived using previously published measurements along with 160 new radial velocity measurements across the 2016 periastron passage of WR …
us, nz, be, ca, gb, de, fr, es, tr
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2021
article
OpenAlex
S. P. Møller, Sanghyuk Moon, T. Wauters, P. Petersson et autres
de
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2020
article
OpenAlex
Joshua D. Thomas, Scott Lee, Max Cooley, R. E. Irving
Igniting excitement for physics in our students is a goal of every instructor. In this paper, we discuss a unique example of the concept of density, a subject that is rarely viewed as intriguing by students. By combining a problem involving dinosaurs …
us
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Accès ouvert
2019
article
OpenAlex
Seema Rivera, Jennifer M. Knack, Kathleen Kavanagh, Joshua D. Thomas et autres
Rural, economically disadvantaged communities face a bigger challenge than urban communities in recruiting and retaining high school (HS) students in science, technology, engineering, and mathematics (STEM) because many of these students do not have access to high-quality STEM opportunities. In this article, …
us
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