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Comprehensive analysis of HD 105, a young solar system analog
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Marshall, J. P., Milli, J., Choquet, É., Burgo, C. del, Kennedy, Grant M., Matrà, L., Ertel, S. and Boccaletti, A. (2018) Comprehensive analysis of HD 105, a young solar system analog. The Astrophysical Journal, 869 (1). 10. doi:10.3847/1538-4357/aaec6a
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WRAP-comprehensive analysis-HD105-young-solar-system-analog-Kennedy-2018.pdf - Accepted Version - Requires a PDF viewer. Download (1578Kb) | Preview |
Official URL: http://dx.doi.org/10.3847/1538-4357/aaec6a
Abstract
HD 105 is a nearby, pre-main-sequence G0 star hosting a moderately bright debris disk (L dust/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.
| Item Type: | Journal Article | |||||||||||||||||||||||||||||||||||||||
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| Subjects: | Q Science > QB Astronomy | |||||||||||||||||||||||||||||||||||||||
| Divisions: | Faculty of Science > Physics | |||||||||||||||||||||||||||||||||||||||
| Library of Congress Subject Headings (LCSH): | Circumstellar matter, Planetary systems | |||||||||||||||||||||||||||||||||||||||
| Journal or Publication Title: | The Astrophysical Journal | |||||||||||||||||||||||||||||||||||||||
| Publisher: | Institute of Physics Publishing, Inc. | |||||||||||||||||||||||||||||||||||||||
| ISSN: | 0004-637X | |||||||||||||||||||||||||||||||||||||||
| Official Date: | 6 December 2018 | |||||||||||||||||||||||||||||||||||||||
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| Volume: | 869 | |||||||||||||||||||||||||||||||||||||||
| Number: | 1 | |||||||||||||||||||||||||||||||||||||||
| Article Number: | 10 | |||||||||||||||||||||||||||||||||||||||
| DOI: | 10.3847/1538-4357/aaec6a | |||||||||||||||||||||||||||||||||||||||
| Status: | Peer Reviewed | |||||||||||||||||||||||||||||||||||||||
| Publication Status: | Published | |||||||||||||||||||||||||||||||||||||||
| Publisher Statement: | © 2018. The American Astronomical Society. All rights reserved. | |||||||||||||||||||||||||||||||||||||||
| Access rights to Published version: | Restricted or Subscription Access | |||||||||||||||||||||||||||||||||||||||
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