SIMBAD references

2007ApJ...666.1232C - Astrophys. J., 666, 1232-1244 (2007/September-2)

The evolution of protoplanetary disks around millisecond pulsars: the PSR 1257+12 system.


Abstract (from CDS):

We model the evolution of protoplanetary disks surrounding millisecond pulsars, using PSR 1257+12 as a test case. Initial conditions were chosen to correspond to initial angular momenta expected for supernova fallback disks and disks formed from the tidal disruption of a companion star. Models were run under two models for the viscous evolution of disks: fully viscous and layered accretion disk models. Supernova fallback disks result in a distribution of solids confined to within 1-2 AU and produce the requisite material to form the three known planets surrounding PSR 1257+12. Tidal disruption disks tend to slightly underproduce solids interior to 1 AU, required for forming the pulsar planets, while overproducing the amount of solids where no body, lunar mass or greater, exists. Disks evolving under ``layered'' accretion spread somewhat less and deposit a higher column density of solids into the disk. In all cases, circumpulsar gas dissipates on ≲105 yr timescales, making formation of gas giant planets highly unlikely.

Abstract Copyright:

Journal keyword(s): Stars: Planetary Systems: Formation - Stars: Pulsars: General - Stars: Pulsars: Individual: Alphanumeric: PSR 1257+12

Simbad objects: 4

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