Eln. Jensen et al., A CONNECTION BETWEEN SUBMILLIMETER CONTINUUM FLUX AND SEPARATION IN YOUNG BINARIES, The Astrophysical journal, 429(1), 1994, pp. 120000029-120000032
We have made sensitive 800 mum continuum observations of low-mass, pre
-main-sequence (PMS) binary stars with projected separations less than
25 AU in Taurus-Auriga to study disks in the young binary environment
. We did not detect any of the observed binaries, with typical 3 sigma
upper limits of approximately 30 mJy. Combining our observations with
previous 1300 mum observations of PMS Taurus binaries by Beckwith et
al. and others, we find that the submillimeter fluxes from binaries wi
th projected separations a(p) between 1 and 50 AU are significantly lo
wer than fluxes from binaries with a(p) > 50 AU. The submillimeter flu
xes from the wider binaries are consistent with those of PMS single st
ars. This may indicate lower disk surface densities and masses in the
close binaries. Alternatively, dynamical clearing of gaps by close bin
aries is marginally sufficient to lower their submillimeter fluxes to
the observed levels, even without reduction of surface densities elsew
here in the disks.