Sökning: "Planets"
Visar resultat 16 - 20 av 79 avhandlingar innehållade ordet Planets.
16. The formation and fate of planetesimals at planetary gap edges
Sammanfattning : High resolution observations with ALMA have revealed that concentric rings and gaps are common features in protoplanetary disks. The favored mechanism for creating these substructures are planet-disk interactions, in which growing planets open gaps in the disk, and particles become trapped at the pressure maxima that form at the corresponding gap edges. LÄS MER
17. A Cosmic Quest for New Worlds. Characterising Exoplanet Signals via Radial Velocity and Transit Photometry
Sammanfattning : Since the first unambiguous detection of a planet around a Sun-like star, the interest in the new and exciting field of exoplanets has grown immensely. New and exciting developments are seen at a pace unparalleled for most subfields of astronomy. LÄS MER
18. Astrophysical impacts on habitable planetary systems
Sammanfattning : Finding life on a planet other than the Earth would easily be one of the greatest discoveries of all time, particularly so if it is found outside our Solar System. To do so, we must understand the conditions required for life to emerge and develop. LÄS MER
19. The role of ice in planet formation
Sammanfattning : As stars form, they are surrounded by a disc composed of gas, dust and ice – the protoplanetary disc, where solids grow from micrometre-sized dust to planets. Small dust grows readily by collisions. LÄS MER
20. Extrasolar Kuiper and asteroid belts Modelling far-infrared dust emission
Sammanfattning : The first detections of circumstellar dust emission were announced in the mid 1980s. Direct observations of the edge-on disc of beta Pictoris provided evidence that the dust was part of possible planetary systems. About a decade later, in 1995, the first confirmed extrasolar planet around a main sequence star (51 Pegasi b) was announced. LÄS MER
