What Sets the Radial Locations of Warm Debris Disks?
arXiv:1708.07151 · doi:10.3847/1538-4357/aa8037
Abstract
The architectures of debris disks encode the history of planet formation in these systems. Studies of debris disks via their spectral energy distributions (SEDs) have found infrared excesses arising from cold dust, warm dust, or a combination of the two. The cold outer belts of many systems have been imaged, facilitating their study in great detail. Far less is known about the warm components, including the origin of the dust. The regularity of the disk temperatures indicates an underlying structure that may be linked to the water snow line. If the dust is generated from collisions in an exo-asteroid belt, the dust will likely trace the location of the water snow line in the primordial protoplanetary disk where planetesimal growth was enhanced. If instead the warm dust arises from the inward transport from a reservoir of icy material farther out in the system, the dust location is expected to be set by the current snow line. We analyze the SEDs of a large sample of debris disks with warm components. We find that warm components in single-component systems (those without detectable cold components) follow the primordial snow line rather than the current snow line, so they likely arise from exo-asteroid belts. While the locations of many warm components in two-component systems are also consistent with the primordial snow line, there is more diversity among these systems, suggesting additional effects play a role.
References in corpus (35)
- Planet formation around stars of various masses: The snow line and the frequency of giant planets
- Debris Disk Evolution Around A Stars
- Accretion in the Rho-Oph pre-main sequence stars
- Transience of hot dust around sun-like stars
- Grain Retention and Formation of Planetesimals near the Snow Line in MRI-driven Turbulent Protoplanetary Disks
- The Complete Census of 70-um-Bright Debris Disks within the FEPS (Formation and Evolution of Planetary Systems) Spitzer Legacy Survey of Sun-like Stars
- Probing for Exoplanets Hiding in Dusty Debris Disks: Disk Imaging, Characterization, and Exploration with HST/STIS Multi-Roll Coronagraphy
- Nearby debris disk systems with high fractional luminosity reconsidered
- Planetesimal formation around the snow line in MRI-driven turbulent protoplanetary disks
- Main-Sequence Effective Temperatures from a Revised Mass-Luminosity Relation Based on Accurate Properties
- Resolved Debris Discs Around A Stars in the Herschel DEBRIS Survey
- Do Two Temperature Debris Disks Have Multiple Belts?
- Discovery of an 86 AU Radius Debris Ring Around HD 181327
- Herschel images of Fomalhaut. An extrasolar Kuiper Belt at the height of its dynamical activity
- Debris Disks in the Scorpius-Centaurus OB Association Resolved by ALMA
- Disk Radii and Grain Sizes in Herschel-Resolved Debris Disks
- A near-infrared interferometric survey of debris-disc stars. IV. An unbiased sample of 92 southern stars observed in H-band with VLTI/PIONIER
- The Dust Properties of Eight Debris Disk Candidates as Determined by Submillimeter Photometry
- Gas and dust in the Beta Pictoris Moving Group as seen by the Herschel Space Observatory
- Planetesimal driven migration as an explanation for observations of high levels of warm, exozodiacal dust
- Stirring in massive, young debris discs from spatially resolved Herschel images
- ALMA observations of the debris disk around the young Solar Analog HD 107146
- Long-wavelength observations of debris discs around sun-like stars
- Near-infrared emission from sublimating dust in collisionally active debris disks
- Warm exo-Zodi from cool exo-Kuiper belts: the significance of P-R drag and the inference of intervening planets
- q1 Eri: a solar-type star with a planet and a dust belt
- Does warm debris dust stem from asteroid belts?
- CARMA Millimeter-Wave Aperture Synthesis Imaging of the HD 32297 Debris Disk
- The Exceptionally Large Debris Disk around γOphiuchi
- A Resolved Ring of Debris Dust Around the Solar Analog HD 107146
- The discovery of new warm debris disks around F-type stars
- Discovery of an extended debris disk around the F2V star HD 15745
- Herschel Observations of Dusty Debris Disks
- Probing the Terrestrial Regions of Planetary Systems: Warm Debris Disks with Emission Features
- Resolved Millimeter Emission from the HD 15115 Debris Disk