Do all Sun-like stars have planets? Inferences from the disc mass reservoirs of Class 0 protostars

Details Do all Sun-like stars have planets? Inferences from the disc mass reservoirs of Class 0 protostars Do all Sun-like stars have planets? Inferences from the disc mass reservoirs of Class 0 protostars

Mar 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011mnras.412l..88g&link_type=abstract

Monthly Notices of the Royal Astronomical Society: Letters, Volume 412, Issue 1, pp. L88-L92.

Astronomy and Astrophysics

Astronomy

Protoplanetary Discs, Circumstellar Matter

Scientific paper

Protostars ˜0.1 Myr old are heavily obscured, but their circumstellar dust discs can be studied by millimetre interferometry that resolves out the obscuring envelope. Consistent estimates are made for the disc masses of Class 0 protostars, and these range over 7-660 MJup. A simple grain coagulation model reproduces the mass distributions of more evolved discs around Class I protostars and Class II T Tauri stars (at ≲1, ≲5 Myr), implying that their observed dust is remnant material. The conversion of most dust grains into planetesimals thus occurs very early, at ˜0.1 Myr. As this is concurrent with the formation of the star itself, much of the disc is expected to accrete on to the central object, and a correlation of bolometric luminosity and disc mass is observed that agrees well with disc models. The observed Class 0 discs all contain upwards of 20 M? of dust, allowing for the formation of ‘super-Earths’ around many Sun-like stars. Only 10 per cent of the dust mass needs to be converted into planetary cores to match the range of such core masses presently known.

Affiliated with

Also associated with

No associations

Rating

Do all Sun-like stars have planets? Inferences from the disc mass reservoirs of Class 0 protostars 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 Do all Sun-like stars have planets? Inferences from the disc mass reservoirs of Class 0 protostars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Do all Sun-like stars have planets? Inferences from the disc mass reservoirs of Class 0 protostars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1398604