Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...207.0907p&link_type=abstract
American Astronomical Society Meeting 207, #09.07; Bulletin of the American Astronomical Society, Vol. 37, p.1164
Astronomy and Astrophysics
Astronomy
Scientific paper
This poster presents 350micron observations obtained on young low mass members of the Taurus star-forming region with the SHARCII camera at the 10.4m Caltech Submillimeter Observatory. In contrast to infrared measurements that probe hot dust in the inner disk, submillimeter data are sensitive to cool outer dust material in the regions associated with giant planet formation, and they allow an estimate of the disk dust mass. The goals of the program are to study the frequency and masses of circumstellar disks across the stellar boundary. Differences in disk properties between stars and brown dwarfs may indicate different formation mechanisms. The initial sample conisists of stars covering the M2 - M7 spectral types with no indication of companions in high resolution images and with the highest Halpha equivalent widths. Of this subset of the data, all stars were detected with fluxes ranging from 70mJy to 2Jy, while only an upper limit was determined for the substellar member CFHT BD 4. This preliminary result shows a drop in disk flux from the bottom of the Main Sequence to the substellar regime.
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