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A Herschel resolved far-infrared dust ring around HD 207129
Solar and Stellar Astrophysics · Submitted 18 Apr 2011
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim We have resolved the dust-producing planetesimal belt of a debris disc at 100 {\mu}m for the first time.
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The abstract, sentence by sentence
Dusty debris discs around main sequence stars are thought to be the result of continuous collisional grinding of planetesimals in the system. The majority of these systems are unresolved and analysis of the dust properties is limited by the lack of information regarding the dust location.vThe Herschel DUNES key program is observing 133 nearby, Sun-like stars (<20 pc, FGK spectral type) in a volume limited survey to constrain the absolute incidence of cold dust around these stars by detection of far infrared excess emission at flux levels comparable to the Edgeworth-Kuiper belt (EKB). We have observed the Sun-like star HD 207129 with Herschel PACS and SPIRE. In all three PACS bands we resolve a ring-like structure consistent with scattered light observations. Using {\alpha} Bo\"otis as a reference point spread function (PSF), we deconvolved the images, clearly resolving the inner gap in the disc at both 70 and 100 {\mu}m. We have resolved the dust-producing planetesimal belt of a debris disc at 100 {\mu}m for the first time. We measure the radial profile and fractional luminosity of the disc, and compare the values to those of discs around stars of similar age and/or spectral type, placing this disc in context of other resolved discs observed by Herschel/DUNES.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | Dusty debris discs around main sequence stars are thought to be the result of continuous collisional grinding of planetesimals in the system. | background 1.00 | 0.04 | 0.02 | hedged possibility 0.91 |
| s1 | The majority of these systems are unresolved and analysis of the dust properties is limited by the lack of information regarding the dust location.vThe Herschel DUNES key program is observing 133 nearby, Sun-like stars (<20 pc, FGK spectral type) in a volume limited survey to constrain the absolute incidence of cold dust around these stars by detection of far infrared excess emission at flux levels comparable to the Edgeworth-Kuiper belt (EKB). | background 0.89 | 0.17 | 0.03 | asserted 0.98 |
| s2 | We have observed the Sun-like star HD 207129 with Herschel PACS and SPIRE. | method 0.77 | 0.97 | 0.03 | asserted 0.99 |
| s3 | In all three PACS bands we resolve a ring-like structure consistent with scattered light observations. | result 1.00 | 0.96 | 0.15 | hedged possibility 0.76 |
| s4 | Using {\alpha} Bo\"otis as a reference point spread function (PSF), we deconvolved the images, clearly resolving the inner gap in the disc at both 70 and 100 {\mu}m. | method 0.84 | 0.97 | 0.11 | asserted 1.00 |
| s5 | We have resolved the dust-producing planetesimal belt of a debris disc at 100 {\mu}m for the first time. | result 0.83 | 0.96 | 0.77 | asserted 1.00 |
| s6 | We measure the radial profile and fractional luminosity of the disc, and compare the values to those of discs around stars of similar age and/or spectral type, placing this disc in context of other resolved discs observed by Herschel/DUNES. | contribution 0.47 | 0.96 | 0.09 | asserted 1.00 |
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Original abstract
Dusty debris discs around main sequence stars are thought to be the result of continuous collisional grinding of planetesimals in the system. The majority of these systems are unresolved and analysis of the dust properties is limited by the lack of information regarding the dust location.vThe Herschel DUNES key program is observing 133 nearby, Sun-like stars (<20 pc, FGK spectral type) in a volume limited survey to constrain the absolute incidence of cold dust around these stars by detection of far infrared excess emission at flux levels comparable to the Edgeworth-Kuiper belt (EKB). We have observed the Sun-like star HD 207129 with Herschel PACS and SPIRE. In all three PACS bands we resolve a ring-like structure consistent with scattered light observations. Using {\alpha} Bo\"otis as a reference point spread function (PSF), we deconvolved the images, clearly resolving the inner gap in the disc at both 70 and 100 {\mu}m. We have resolved the dust-producing planetesimal belt of a debris disc at 100 {\mu}m for the first time. We measure the radial profile and fractional luminosity of the disc, and compare the values to those of discs around stars of similar age and/or spectral type, placing this disc in context of other resolved discs observed by Herschel/DUNES.
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