Observations of Cool Dusty Debris in Extended Disks - Characterization Beyond Infrared Data
First Author:
Ricky Nilsson
Email: ricky AT astro.su.se
Stockholm Observatory
Stockholm University, AlbaNova University Center
SE-10691 Stockholm, Sweden
Coauthors:
Brandeker, Alexis, Stockholm Observatory
Liseau, Rene, Onsala Space Observatory
Risacher, Christophe, European Southern Observatory (ESO)
Olofsson, Göran, Stockholm Observatory
Pilbratt, Göran, European Space Agency (ESA)
Fridlund, Malcolm, European Space Agency (ESA)
Abstract
Abstract changed to: Previous observations with IRAS and ISO, and ongoing observations with Spitzer and AKARI have lead to the discovery of over 200 debris disk candidates, based on detected mid- and far-IR excess emission. In order to constrain the properties of these systems, e.g., to accurately determine the dust mass, temperature, and radial extent, follow-up observations in the submillimeter wavelength region is needed. Here we present recent results from 870-micron measurements targeting candidate stars in the Beta Pictoris Moving Group (BPMG), using the Large APEX BOlometer CAmera (LABOCA) on the 12-m APEX telescope, on Llano de Chajnantor, Chile. In addition to interesting results on the well-known beta Pictoris disk itself, a first detection of cold extended dust around HD 181327, as well as tentative detections of HD 170773 and HD 172555, were made.
Link to PDF
