A mysterious dust clump in a disk around an evolved binary star system

Details A mysterious dust clump in a disk around an evolved binary star system A mysterious dust clump in a disk around an evolved binary star system

Sep 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998natur.395..144j&link_type=abstract

Nature, Volume 395, Issue 6698, pp. 144-145 (1998).

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Scientific paper

The discovery of planets in orbit around the pulsar PSR1257+12 (ref. 1) shows that planets may form around post-main-sequence stars. Other evolved stars, such as HD44179 (an evolved star which is part of the binary system that has expelled the gas and dust that make the Red Rectangle nebula), possess gravitationally bound orbiting dust disks,. It is possible that planets might form from gravitational collapse in such disks. Here we report high-angular-resolution observations at millimetre and submillimetre wavelengths of the dusk disk associated with the Red Rectangle. We find a dust clump with an estimated mass near that of Jupiter in the outer region of the disk. The clump is larger than our Solar System, and far beyond where planet formation would normally be expected, so its nature is at present unclear.

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