Constraints on the initial composition of low-mass extrasolar planets from the modeling of thermodynamic conditions in protoplanetary disks

Details Constraints on the initial composition of low-mass extrasolar planets from the modeling of thermodynamic conditions in protoplanetary disks Constraints on the initial composition of low-mass extrasolar planets from the modeling of thermodynamic conditions in protoplanetary disks

Aug 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007epsc.conf..563m&link_type=abstract

European Planetary Science Congress 2007, Proceedings of a conference held 20-24 August, 2007 in Potsdam, Germany. Online at ht

Computer Science

Scientific paper

We examine the formation conditions of icy planetesimals in protoplanetary disks in order to determine the composition of ices in small and cold extrasolar planets. Assuming ices are formed from hydrates, clathrate hydrates, and pure condensates, we calculate their mass fractions with respect to the total quantity of ice included in planetesimals, for a grid of disk models. We find that the composition weakly depends on the adopted disk thermodynamic conditions, and is rather influenced by the initial composition of the gas phase. Varying the relative elemental (C/O) or molecular (CO2/CO/CH4) abundance ratios in the gas phase allows us to apply our results to a wide range of planetary systems, including cold planets evidenced by microlensing, hypothetical ocean-planets and carbon planets, which could be detected by Corot or Kepler. We find that a so-called 'minor species' like CO2 or CH4 can become the major volatile in planetesimals depending on the C/O and CO2/CO/CH4 gas-phase ratios.

Affiliated with

Also associated with

No associations

Rating

Constraints on the initial composition of low-mass extrasolar planets from the modeling of thermodynamic conditions in protoplanetary disks does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Constraints on the initial composition of low-mass extrasolar planets from the modeling of thermodynamic conditions in protoplanetary disks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Constraints on the initial composition of low-mass extrasolar planets from the modeling of thermodynamic conditions in protoplanetary disks will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-971608