SIMBA's view of the epsilon Eri disk

Abstract

We present the first observational confirmation for an extended circumstellar dust disk around epsilon Eri. The observations were obtained with the bolometer array SIMBA at the 15 m radio telescope SEST in Chile and measure the dust continuum at 1.2 mm. The emission, with a total flux of 21.4 mJy and a rms of 2.2 mJy/beam, is resolved to a deconvolved size of 27.4 arcsec which corresponds to 88 AU. No clear indication for a ring-like disk structure is seen, possibly also due to the telescope's large beam width of 24 arcsec. Models of the object's spectral energy distribution from IR to mm-wavelengths show that the emission can also be explained by a simple disk model. We further demonstrate the strong influence of noise and propose to be cautious with interpretations of the ring substructure.

To appear in A&A Letters, in press

References in corpus (6)

• Dust Grain Size Distributions and Extinction in the Milky Way, LMC, and SMC
• A dust ring around Epsilon Eridani: analogue to the young Solar System
• Evidence for a Long-period Planet Orbiting Epsilon Eridani
• Structure in the Epislon Eridani dusty disk caused by mean motion resonances with a 0.3 eccentricity planet at periastron
• Spectral Energy Distributions of Circumstellar Debris Disks I. Analytic Disk Density Distributions
• Modeling the Infrared Emission from the Epsilon Eridani Disk

Cited by in corpus (11)

• The Extrasolar Planet epsilon Eridani b - Orbit and Mass
• Epsilon Eridani's Planetary Debris Disk: Structure and Dynamics based on Spitzer and CSO Observations
• SONS: The JCMT legacy survey of debris discs in the submillimetre
• Spitzer/IRAC Limits to Planetary Companions of Fomalhaut and epsilon Eridani
• The Epsilon Eridani System Resolved by Millimeter Interferometry
• Deep LMT/AzTEC millimeter observations of Epsilon Eridani and its surroundings
• The clumpy structure of $\epsilon$ Eridani's debris disc revisited by ALMA
• MAMBO image of the debris disk around epsilon Eridani : robustness of the azimuthal structure
• Detecting a rotation in the epsilon Eridani debris disc
• Properties of the single Jovian planet population and the pursuit of Solar system analogues
• Limits on the Optical Brightness of the Epsilon Eridani Dust Ring