Sökning: "pebble"

Visar resultat 16 - 20 av 21 uppsatser innehållade ordet pebble.

1. 16. Formation of super-Earths via pebble accretion onto planetesimals

   Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

   Författare :Daniel Mikkola; [2015]
   Nyckelord :planet; formation; planet formation; exoplanets; pebble; accretion; pebble accretion; Physics and Astronomy;

   Sammanfattning : Data from NASA's Kepler space telescope, which searches for exoplanets via the transit method, produced 1108 new planetary candidates in 2013 with a total of 91% being smaller than Neptune in size. These were mostly super-Earths, terrestial planets between Earth and Neptune in size, with orbits around 10 days. LÄS MER

3. 17. Migrating Dust Particles

   Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation; Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation

   Författare :Joakim Eriksson; [2014]
   Nyckelord :Physics and Astronomy;

   Sammanfattning : Where the dust in a protoplanetary disk is as the disk evolves over time is essential to know for further studies of the planet formation process. A new star is created alongside a stellar nebula. The nebula contains rock, ice and gas which are not accreted to the star. LÄS MER

4. 18. Radial infall of pebbles and dust pile-up at the ice line in a protoplanetary disk

   Kandidat-uppsats, Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation; Lunds universitet/Astronomi - Genomgår omorganisation

   Författare :Erik Jeppsson; [2013]
   Nyckelord :Physics and Astronomy;

   Sammanfattning : We investigate the radial infall of ice pebbles in a protoplanetary disk, and how these tend to end up in relatively close proximity to eachother, providing a possible spawning ground for planets. These pebbles have dust particles embedded in them, which are released as the pebble crosses the so-called ice- line, where the ice evaporates. LÄS MER

5. 19. How Does a Minority Become a Pebble in a Country's Shoe?

   Master-uppsats, Malmö högskola/Fakulteten för kultur och samhälle (KS)

   Författare :Eugenie Lonmene Ngnintedem; [2012]
   Nyckelord :Juvenile Delinquency; Social Exclusion; Strain; Social Disorganization; Conflict; Feymania; Arabs; Middle East; North Africa; Bamileke; Malmö; Douala;

   Sammanfattning : In a statistical report of the year 2005, Brå informs that the Middle East and North African immigrants are overrepresented in crime in Sweden. Also, in a previous study in Cameroon, I realized that the Bamileke folk (originating from the West Cameroon) is mostly represented in the minor district of the Central Prison of Douala - Cameroon. LÄS MER

7. 20. How Does a Minority Become a Pebble in a Country's Shoe?

   Master-uppsats, Malmö högskola/Fakulteten för kultur och samhälle (KS)

   Författare :Eugenie Lonmene Ngnintedem; [2012]
   Nyckelord :Juvenile Delinquency; Social Exclusion; Strain; Social Disorganization; Conflict; Feymania; Arabs; Middle East; North Africa; Bamileke; Malmö; Douala;

   Sammanfattning : In a statistical report of the year 2005, Brå informs that the Middle East and North African immigrants are overrepresented in crime in Sweden. Also, in a previous study in Cameroon, I realized that the Bamileke folk (originating from the West Cameroon) is mostly represented in the minor district of the Central Prison of Douala - Cameroon. LÄS MER