Comprehensive Analysis of HD 105, A Young Solar System Analog
Article
Article Title | Comprehensive Analysis of HD 105, A Young Solar System Analog |
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ERA Journal ID | 1057 |
Article Category | Article |
Authors | Marshall, J. P. (Author), Milli, J. (Author), Choquet, E. (Author), del Burgo, C. (Author), Kennedy, G. M. (Author), Matra, L. (Author), Ertel, S. (Author) and Boccaletti, A. (Author) |
Journal Title | The Astrophysical Journal: an international review of astronomy and astronomical physics |
Journal Citation | 869 (1), pp. 1-12 |
Article Number | 10 |
Number of Pages | 12 |
Year | 2018 |
Publisher | IOP Publishing |
Place of Publication | United States |
ISSN | 0004-637X |
1538-4357 | |
Digital Object Identifier (DOI) | https://doi.org/10.3847/1538-4357/aaec6a |
Web Address (URL) | https://iopscience.iop.org/article/10.3847/1538-4357/aaec6a |
Abstract | HD 105 is a nearby, pre-main-sequence G0 star hosting a moderately bright debris disk (Ldust/L⋆ ∼ 2.6 × 10−4). The star and its surroundings might therefore be considered an analog of the young solar system. We refine the stellar parameters based on an improved Gaia parallax distance and identify it as a pre-main-sequence star with an age of 50 ± 16 Myr. The circumstellar disk was marginally resolved by Herschel/PACS imaging at far-infrared wavelengths. Here, we present an archival ALMA observation at 1.3 mm, revealing the extent and orientation of the disk. We also present Hubble Space Telescope (HST)/NICMOS and VLT/SPHERE near-infrared images, where we recover the disk in scattered light at the ≥5σ level. This was achieved by employing a novel annular averaging technique and is the first time this has been achieved for a disk in scattered light. Simultaneous modeling of the available photometry, disk architecture, and detection in scattered light allow better determination of the disk's architecture, and dust grain minimum size, composition, and albedo. We measure the dust albedo to lie between 0.19 and 0.06, the lower value being consistent with Edgeworth–Kuiper Belt objects. |
Keywords | circumstellar matter; planetary systems; stars: individual (HD 105) |
ANZSRC Field of Research 2020 | 519999. Other physical sciences not elsewhere classified |
510109. Stellar astronomy and planetary systems | |
510101. Astrobiology | |
Byline Affiliations | Computational Engineering and Science Research Centre |
European Southern Observatory (ESO), Chile | |
California Institute of Technology (Caltech), United States | |
National Institute of Astrophysics Optics and Electronics, Mexico | |
University of Warwick, United Kingdom | |
Center for Astrophysics Harvard and Smithsonian, United States | |
University of Arizona, United States | |
Laboratory of Space Science and Astrophysical Instrumentation, France | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q7783/comprehensive-analysis-of-hd-105-a-young-solar-system-analog
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