A Herschel resolved debris disc around HD 105211

Abstract

Debris discs are the dusty aftermath of planet formation processes around main-sequence stars. Analysis of these discs is often hampered by the absence of any meaningful constraint on the location and spatial extent of the disc around its host star. Multi-wavelength, resolved imaging ameliorates the degeneracies inherent in the modelling process, making such data indispensable in the interpretation of these systems. The Herschel Space Observatory observed HD 105211 (Eta Cru, HIP 59072) with its PACS instrument in three far-infrared wavebands (70, 100 and 160 um). Here we combine these data with ancillary photometry spanning optical to far-infrared wavelengths in order to determine the extent of the circumstellar disc. The spectral energy distribution and multi-wavelength resolved emission of the disc are simultaneously modelled using a radiative transfer and imaging codes. Analysis of the Herschel/PACS images reveals the presence of extended structure in all three PACS images. From a radiative transfer model we derive a disc extent of 87.0 +/- 2.5 au, with an inclination of 70.7 +/- 2.2 degrees to the line of sight and a position angle of 30.1 +/- 0.5 degrees. Deconvolution of the Herschel images reveal a potential asymmetry but this remains uncertain as a combined radiative transfer and image analysis replicate both the structure and the emission of the disc using a single axisymmetric annulus.

arXiv comment11 pages, 4 figures, 6 tables, Accepted for publication in MNRAS on 25th March, 2017

References in corpus (76)

• The Wide-field Infrared Survey Explorer (WISE): Mission Description and Initial On-orbit Performance
• Validation of the new Hipparcos reduction
• Herschel Space Observatory - An ESA facility for far-infrared and submillimetre astronomy
• The Spitzer Space Telescope Mission
• The Photodetector Array Camera and Spectrometer (PACS) on the Herschel Space Observatory
• The Geneva-Copenhagen survey of the Solar neighbourhood: Ages, metallicities, and kinematic properties of 14,000 F and G dwarfs
• The Infrared Spectrograph on the Spitzer Space Telescope
• Protoplanetary Disks and Their Evolution
• Scattering by Interstellar Dust Grains: Optical and Ultraviolet
• The AKARI/IRC Mid-Infrared All-Sky Survey
• Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 parsecs: The Southern Sample
• Cometary Origin of the Zodiacal Cloud and Carbonaceous Micrometeorites
• Debris Disk Evolution Around A Stars
• Transience of hot dust around sun-like stars
• CASSIS: The Cornell Atlas of Spitzer/IRS Sources
• Spitzer IRS Spectroscopy of IRAS-Discovered Debris Disks
• Probing for Exoplanets Hiding in Dusty Debris Disks: Disk Imaging, Characterization, and Exploration with HST/STIS Multi-Roll Coronagraphy
• Fomalhaut's Debris Disk and Planet: Constraining the Mass of Fomalhaut b From Disk Morphology
• DUst Around NEarby Stars. The survey observational results
• Formation and Evolution of Planetary Systems (FEPS): Properties of Debris Dust around Solar-type Stars
• Incidence and survival of remnant disks around main-sequence stars
• New Debris Disks Around Nearby Main Sequence Stars: Impact on The Direct Detection of Planets
• Long-Term Collisional Evolution of Debris Disks
• Debris Disks: Seeing Dust, Thinking of Planetesimals and Planets
• Disk evolution in the solar neighborhood. I Disk frequencies from 1 to 100 Myr
• The Herschel-PACS photometer calibration: Point-source flux calibration for scan maps
• Dusty Debris Around Solar-Type Stars: Temporal Disk Evolution
• Shaping the Kuiper belt size spectrum by shattering large but strengthless bodies
• The solar neighbourhood age-metallicity relation - does it exist?
• Resolved Debris Discs Around A Stars in the Herschel DEBRIS Survey
• Herschel imaging of 61 Vir: implications for the prevalence of debris in low-mass planetary systems
• Do Two Temperature Debris Disks Have Multiple Belts?
• Disk Radii and Grain Sizes in Herschel-Resolved Debris Disks
• Modeling Collisional Cascades In Debris Disks: Steep Dust-Size Distributions
• Resolved Imaging of the HR 8799 Debris Disk with Herschel
• New measurements of rotation and differential rotation in A-F stars: Are there two populations of differentially rotating stars?
• The dust grain size - stellar luminosity trend in debris discs
• The bright end of the exo-Zodi luminosity function: Disk evolution and implications for exo-Earth detectability
• Five steps in the evolution from protoplanetary to debris disk
• The age dependence of the Vega phenomenon: Observations
• Metallicity of solar-type stars with debris discs and planets
• Binaries Among Debris Disk Stars
• Incidence of debris discs around FGK stars in the solar neighbourhood
• Does the presence of planets affect the frequency and properties of extrasolar Kuiper Belts? Results from the Herschel DEBRIS and DUNES surveys
• Self-consistent size and velocity distributions of collisional cascades
• HIPPARCOS age-metallicity relation of the solar neighbourhood disc stars
• IRS Spectra of Solar-Type Stars: \break A Search for Asteroid Belt Analogs
• An improved model of the Edgeworth-Kuiper debris disk
• Herschel Observations of Gas and Dust in the Unusual 49 Ceti Debris Disk
• Collisional and Thermal Emission Models of Debris Disks: Towards Planetesimal Population Properties
• Searching for signatures of planet formation in stars with circumstellar debris discs
• Constraints on Planetesimal Collision Models in Debris Disks
• On the Evolution of Dust Mineralogy, From Protoplanetary Disks to Planetary Systems
• Correlations between the stellar, planetary and debris components of exoplanet systems observed by $\text{Herschel}$
• Hubble Space Telescope Optical Imaging of the Eroding Debris Disk HD 61005
• Solar System Analogs Around IRAS-Discovered Debris Disks
• The Gray Needle: Large Grains in the HD 15115 Debris Disk from LBT/PISCES/Ks and LBTI/LMIRcam/L' Adaptive Optics Imaging
• Resolving the cold debris disc around a planet-hosting star: PACS photometric imaging observations of q1 Eri (HD10647, HR506)
• Observations, Modeling and Theory of Debris Disks
• A Herschel resolved far-infrared dust ring around HD 207129
• The Pointing System of the Herschel Space Observatory. Description, Calibration, Performance and Improvements
• Can eccentric debris disks be long-lived? A first numerical investigation and application to ${\zeta }^2$ Reticuli
• Spatially resolved imaging of the two-component eta Crv debris disk with Herschel
• AKARI/IRC 18 Micron Survey of Warm Debris Disks
• Pursuing the planet-debris disk connection: Analysis of upper limits from the Anglo-Australian Planet Search
• Probing the Terrestrial Regions of Planetary Systems: Warm Debris Disks with Emission Features
• An ATCA survey of debris disks at 7 millimeters
• Interpreting the extended emission around three nearby debris disc host stars
• Evolution from protoplanetary to debris discs: The transition disc around HD 166191
• Potential multi-component structure of the debris disk around HIP 17439 revealed by Herschel/DUNES
• Extragalactic number counts at 100 um, free from cosmic variance
• The effect of the high-pass filter data reduction technique on the Herschel PACS Photometer PSF and noise
• Far-infrared and sub-millimetre imaging of HD~76582's circumstellar disk
• Numerical predictions for planets in the debris discs of HD 202628 and HD 207129
• Herschel Observations and Updated Spectral Energy Distributions of Five Sunlike Stars with Debris Disks
• The Formation and Evolution of Planetary Systems: SIRTF Legacy Science in the VLT Era

Cited by in corpus (5)

• Comprehensive analysis of HD 105, a young Solar System analog
• Extended Dust Emission from Nearby Evolved Stars
• Multi-wavelength aperture polarimetry of debris disc host stars
• Multi-wavelength, spatially resolved modelling of HD 48682's debris disc
• The Nearest, Brightest Debris Disk Host Stars: Updated Photosphere Models and Dust Properties for Stars with Saturated 2MASS Photometry