An early extrasolar planetary system revealed by planetesimal belts in β Pictoris

  title={An early extrasolar planetary system revealed by planetesimal belts in $\beta$ Pictoris},
  author={Yoshiko Kataza Okamoto and Hirokazu Kataza and Mitsuhiko Honda and Takuya Yamashita and Takashi Onaka and Jun-ichi Watanabe and Takashi Miyata and Shigeyuki Sako and Takuya Fujiyoshi and Itsuki Sakon},
β Pictoris (β Pic) is a main-sequence star with an edge-on dust disk that might represent a state of the early Solar System. The dust does not seem to be a remnant from the original protoplanetary disk, but rather is thought to have been generated from large bodies like planetesimals and/or comets. The history and composition of the parent bodies can therefore be revealed by determining the spatial distribution, grain size, composition and crystallinity of the dust through high-resolution mid… Expand
Mid-infrared images of β Pictoris and the possible role of planetesimal collisions in the central disk
Thermal infrared images of the central disk imply that the brightness asymmetry results from the presence of a bright clump composed of particles that may differ in size from dust elsewhere in the disk, which is suggested to result from the collisional grinding of resonantly trapped planetesimals or the cataclysmic break-up of a planetesimal. Expand
Comet-like mineralogy of olivine crystals in an extrasolar proto-Kuiper belt
The detection of the 69-micrometre-wavelength band of olivine crystals in the spectrum of β Pictoris shows values strikingly similar to those for the dust emitted by the most primitive comets in the Solar System, even though β’Pictoris is more massive and more luminous and has a different planetary system architecture. Expand
Evidence for an additional planet in the β Pictoris system
With its imaged debris disk of dust, its evaporating exocomets, and an imaged giant planet, the young (~23 Myr) β Pictoris system is a unique proxy for detailed studies of planet formation processesExpand
We observed the edge-on, planet-bearing disk of β Pictoris using T-ReCS at Gemini to clarify and extend previous observations and conclusions about this unique system. Our spectroscopy and spectralExpand
Circumstellar Dust Created by Terrestrial Planet Formation in HD 113766
We present an analysis of the gas-poor circumstellar material in the HD 113766 binary system (F3/F5, 10-16 Myr), recently observed by the Spitzer Space Telescope. For our study we have used the IRExpand
Two families of exocomets in the β Pictoris system
An analysis of more than 1,000 archival spectra gathered between 2003 and 2011 provides a sample of about 6,000 variable absorption signatures arising from exocomets transiting the disk of the parent star, showing that the evaporating bodies observed for decades in the β Pictoris system are analogous to the comets in the Solar System. Expand
A probable giant planet imaged in the beta Pictoris disk. VLT/NaCo deep L'-band imaging
Context: Since the discovery of its dusty disk in 1984, β Pictoris has become the prototype of young early-type planetary systems, and there are now various indications that a massive Jovian planetExpand
Five steps in the evolution from protoplanetary to debris disk
The protoplanetary disks seen around Herbig Ae stars eventually dissipate leaving just a tenuous debris disk, comprised of planetesimals and the dust derived from them, as well as possibly gas andExpand
Abundant Circumstellar Silica Dust and SiO Gas Created by a Giant Hypervelocity Collision in the ~12 Myr HD172555 System
The fine dust detected by IR emission around the nearby Beta Pic analogue star HD172555 is very peculiar. The dust mineralogy is composed primarily of highly refractory, non-equilibrium materials,Expand
VLT imaging of the beta Pictoris gas disk
Context. Circumstellar debris disks older than a few Myr should be largely devoid of primordial gas remaining from the protoplanetary disk phase. Tracing the origin of observed atomic gas inExpand


A Circumstellar Disk Around β Pictoris
A circumstellar disk has been observed optically around the fourth-magnitude star β Pictoris. First detected in the infrared by the Infrared Astronomy Satellite last year, the disk is seen to extendExpand
Mid-infrared images and models of the beta Pictoris dust disk
Newhighresolutionmid-infraredimagesoftheinner part of the Pictoris circumstellar dust disk are reported. These data are used to probe the inner disk geometry and to derive the 0-100 AU radial densityExpand
A circumstellar disk around Beta pictoris.
A circumstellar disk has been observed optically around the fourth-magnitude starbeta Pictoris and it seems likely that the system is relatively young and that planet formation either is occurring now around beta Pictoris or has recently been completed. Expand
Detection of Crystalline Silicates around the T Tauri Star Hen 3-600A*
We have carried out mid-infrared N-band spectroscopic observations of the T Tauri star Hen 3-600A in the TW Hydra association with the Cooled Mid-Infrared Camera and Spectrometer on the 8.2 m SubaruExpand
We have evaluated the spatial distribution of dust in disks supplied by colliding or evaporating bodies spread in a small belt. The gradient of the distribution of dust expelled by radiation pressureExpand
The Silicates in the Disk of beta Pictoris
We have obtained intermediate-resolution (R≃50) infrared (2.6-13.5 μm) spectra of the particles in the circumstellar disk of β Pic. The silicate dust feature near 10 μm is broader and contains moreExpand
The spectrum of the young star HD 100546 observed with the Infrared Space Observatory
It is generally assumed that planets form in the dusty disks that surround young stars (Beckwith & Sargent 1996). The Infrared Space Observatory (Kessler et al. 1996) now enables us to determine theExpand
The Inner Rings of β Pictoris
We present Keck images of the dust disk around β Pictoris at λ = 17.9 μm that reveal new structure in its morphology. Within 1'' (19 AU) of the star, the long axis of the dust emission is rotated byExpand
The First Spatially Resolved Mid-Infrared Spectroscopy of β Pictoris
Long-slit spectra probe the southwest side of the disk in the 8-13 μm region. Dust within 08 of the star shows silicate emission features, including amorphous and crystalline species. Farther out,Expand
Infrared observations and thermal models of the Beta Pictoris disk
Measurements of the flux from the central portion of the Beta Pic disk performed via photometry at 3.5-20 microns in 4- and 8-arcsec apertures are presented. The 10.1- and 20-micron measurements showExpand