Constraints On The Volatile Enrichments In Hd189733b From Internal Structure Models

Details Constraints On The Volatile Enrichments In Hd189733b From Internal Structure Models Constraints On The Volatile Enrichments In Hd189733b From Internal Structure Models

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010dps....42.5603m&link_type=abstract

American Astronomical Society, DPS meeting #42, #56.03; Bulletin of the American Astronomical Society, Vol. 42, p.1078

Astronomy and Astrophysics

Astronomy

Scientific paper

Spectra of the transiting hot Jupiter HD189733b support the possibility that carbon and oxygen abundances range from subsolar to oversolar in the atmosphere of the planet. Here, using a model describing the formation sequence and composition of planetesimals in the protoplanetary disk, we determine the range of volatile abundances in the envelope of HD189733b that is consistent with the 20-50 Earth-masses of heavy elements estimated to be present in the planet's envelope. We then compare the inferred carbon and oxygen abundances to those retrieved from spectroscopy and we find a range of oversolar values that directly fit both spectra and internal structure models. In some cases, we also find that the apparent contradiction between the subsolar elemental abundances and the important mass of heavy elements predicted in HD189733b can be explained by the presence of large amounts of carbon molecules in the form of ethylene, acetylene and hydrogen cyanide that can polymerize and form polycyclic aromatic hydrocarbons and soots in the upper layers of the envelope.

Affiliated with

Also associated with

No associations

Rating

Constraints On The Volatile Enrichments In Hd189733b From Internal Structure Models 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 Volatile Enrichments In Hd189733b From Internal Structure Models, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Constraints On The Volatile Enrichments In Hd189733b From Internal Structure Models will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1230145