Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-04-05
Astrophys.J.646:1038-1042,2006
Astronomy and Astrophysics
Astrophysics
Scientific paper
10.1086/504976
With the MIPS camera on Spitzer, we have searched for far-infrared emission from dust in the planetary system orbiting pulsar PSR 1257+12. With accuracies of 0.05 mJy at 24 um and 1.5 mJy at 70 um, photometric measurements find no evidence for emission at these wavelengths. These observations place new upper limits on the luminosity of dust with temperatures between 20 and 1000 K. They are particularly sensitive to dust temperatures of 100-200 K, for which they limit the dust luminosity to below $3 \times 10^{-5}$ of the pulsar's spin-down luminosity, three orders of magnitude better than previous limits. Despite these improved constraints on dust emission, an asteroid belt similar to the Solar System's cannot be ruled out.
Beichman Charles Arnold
Bryden Geoff
Rieke George H.
Stansberry John Arthur
Stapelfeldt Karl. R.
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