Dust depletion in the inner disk of β Pictoris as a possible indicator of planets

  title={Dust depletion in the inner disk of $\beta$ Pictoris as a possible indicator of planets},
  author={P-.O. Lagage and {\'E}ric Pantin},
IT is not yet possible to see planets orbiting other stars, although this may soon change as observing methods improve1. Indirect evidence for the presence of circumstellar dust disks out of which planets could form has been obtained for several stars, in the form of excess infrared emission, presumed to be from the hot dust2, 3. Planets orbiting in such dust disks would be expected to sweep out dust-free tracks4. Indirect evidence for dust-free regions has been reported5–9, based on an… Expand
A candidate dust disk surrounding the binary stellar system BD+31°643
Planetesimals are thought to form within the dense dust disks that surround young stars1, although this process has not been observed directly. In contrast, the presence of dust disks around older,Expand
A rotating disk of gas and dust around a young counterpart to β Pictoris
β Pictoris is the best known example of a main-sequence star encircled by a tenuous disk. Optical, and infrared images of β Pic suggest that the disk is composed of dust grains which have beenExpand
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
β Pictoris, a young planetary system? A review
Abstract β Pictoris is a bright southern hemisphere star observed in 1983 by the IRAS satellite as presenting a large and unexpected IR excess. This excess was called the Vega-like phenomenon andExpand
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
A submillimetre search for cold extended debris disks in the β Pictoris moving group
Context: Previous observations with the Infrared Astronomical Satellite and the Infrared Space Observatory, and ongoing observations with Spitzer and AKARI, have led to the discovery of over 200Expand
The nature of mid-infrared excesses from hot dust around Sun-like stars
Aims. Studies of the debris disk phenomenon have shown that most systems are analogous to the Edgeworth-Kuiper Belt (EKB). However a rare subset of sun-like stars possess dust which lies, inExpand
Dust around Main-Sequence Stars: Nature or Nurture by the Interstellar Medium?
Dust from the interstellar medium (ISM) can collide with and destroy particles in the circumstellar dust disks around main-sequence stars (Vega/β Pic stars). Two current theories tying the occurrenceExpand
Dynamics of Small Bodies in Planetary Systems
The number of stars that are known to have debris disks is greater than that of stars known to harbor planets. These disks are detected because dust is created in the destruction of planetesimals inExpand
Evolution of Gas and Dust in Circumstellar Disks
A clear understanding of the chemical processing of matter, as it is transferred from a molecular cloud to a planetary system, depends heavily on knowledge of the physical conditions endured by gasExpand


Prospecting for planets in circumstellar dust: sifting the evidence from β Pictoris
Spectroscopic evidence for an extended gaseous shell around the A5V star β Pictoris has been available for more than a decade1–5. Recently, the presence of a vast circumstellar cloud of particles wasExpand
Resolution of the circumstellar disk of β Pictoris at 10 and 20 µm
The A5 dwarf β Pic is a star that may be surrounded by a proto-planetary disk. Among the stars discovered with the Infrared Astronomical Satellite (IRAS) to have far-infrared excesses fromExpand
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
IRAS observations of matter around nearby stars
A systematic search of the IRAS point-source catalog has identified eight new nearby stars which are "Vega-like" in terms of their large 60-micron excess. This brings to twelve, of the set of 36Expand
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
Detection of Silicates in the beta Pictoris Disk
We have detected a broad 10 μm emission feature within 3″ of the star β Pic which is known to have a circumstellar, possibly protoplanetary, disk. The observations were made using four narrow-bandExpand
Coronagraphic Imaging of the beta Pictoris Circumstellar Disk: Evidence of Changing Disk Structure within 100 AU
New R-band images of the β Pictoris circumstellar disk obtained with the Adaptive Optics Coronagraph expose the disk inward to 40 AU from the star. From these images, the first reliable opticalExpand
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 search for extra-solar planetary systems.
  • F. Paresce
  • Physics, Medicine
  • Advances in space research : the official journal of the Committee on Space Research
  • 1992
A battery of new accurate observations planned in the near future of these objects some of which may actually harbour planets or planetesimals that will certainly dramatically improve knowledge of planetary system formation processes and the authors' peculiar position in this scheme are discussed. Expand
Silicate dust in a Vega-excess system
The 10-micron spectrum of the K5V star SAO 179815 (= HD 98800) is presented, and conclusively demonstrates the presence of small silicate dust grains around this star. The 9.7-micron silicate dustExpand