A young solar twin in the Rosette cluster NGC 2244 line of sight
Article
Article Title | A young solar twin in the Rosette cluster NGC 2244 line of sight |
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ERA Journal ID | 1074 |
Article Category | Article |
Authors | Huber, Jeremy M. (Author), Kielkopf, John F. (Author), Mengel, Matthew (Author), Carter, Bradley D. (Author), Ferland, Gary J. (Author) and Clark, Frank O. (Author) |
Journal Title | Monthly Notices of the Royal Astronomical Society |
Journal Citation | 476 (1), pp. 323-335 |
Number of Pages | 13 |
Year | 2018 |
Publisher | Oxford University Press |
Place of Publication | United Kingdom |
ISSN | 0035-8711 |
1365-2966 | |
Digital Object Identifier (DOI) | https://doi.org/10.1093/mnras/sty188 |
Web Address (URL) | https://academic.oup.com/mnras/article/476/1/323/4823142 |
Abstract | Based on prior precision photometry and cluster age analysis, the bright star GSC 00154−01819 is a possible young pre-main sequence member of the Rosette cluster, NGC 2244. As part of a comprehensive study of the large-scale structure of the Rosette and its excitation by the cluster stars, we noted this star as a potential backlight for a probe of the interstellar medium and extinction along the sight line towards a distinctive nebular feature projected on to the cluster centre. New high-resolution spectra of the star were taken with the University College London Echelle Spectrograph of the AAT. They reveal that rather than being a reddened spectral type B or A star within the Mon OB2 association, it is a nearby, largely unreddened, solar twin of spectral type G2V less than 180 Myr old. It is about 219 pc from the Sun with a barycentric radial velocity of +14.35 ± 1.99 km s−1. The spectrum of the Rosette behind it and along this line of sight shows a barycentric radial velocity of +26.0 ± 2.4 km s−1 in H α, and a full width at half-maximum velocity dispersion of 61.94 ± 1.38 km s−1. |
Keywords | stars: distances, stars: solar-type, H II regions |
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 ©2018 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
Byline Affiliations | Thomas More University, United States |
University of Louisville, United States | |
Computational Engineering and Science Research Centre | |
University of Kentucky, United States | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q4w38/a-young-solar-twin-in-the-rosette-cluster-ngc-2244-line-of-sight
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