Sökning: "debris disks"

Visar resultat 1 - 5 av 7 avhandlingar innehållade orden debris disks.

  1. 1. Circumstellar Debris Disks : Observational Studies of Cold Dust and Gas Emission in Planetary Nurseries

    Författare :Ricky Nilsson; Alexis Brandeker; Mark Wyatt; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; circumstellar disks; debris disks; Kuiper belts; planet formation; submillimeter imaging; photometry; coronagraphy; integral-field spectroscopy; Astronomy; astronomi;

    Sammanfattning : Planetary systems form in disks of gas and dust surrounding newborn stars. The young circumstellar environment is characterized by frequent collisions between rocky bodies, leading to a continuous production of small dust grains. LÄS MER

  3. 2. Gas in Debris Disks

    Författare :Maria Cavallius; Alexis Brandeker; Alexander Mustill; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Astronomy; astronomi;

    Sammanfattning : .... LÄS MER

  4. 3. Debris disks from an astronomical and an astrobiological viewpoint

    Författare :Gianni Cataldi; Alexis Brandeker; Göran Olofsson; Eric Stempels; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; debris disks; planetary systems; exoplanets; astrobiology; circumstellar matter; biomarker; biosignature; extraterrestrial life; Astronomy; astronomi;

    Sammanfattning : In this licentiate thesis, I consider debris disks from an observational, astronomical viewpoint, but also discuss a potential astrobiological application. Debris disks are essentially disks of dust and rocks around main-sequence stars, analogue to the Kuiper- or the asteroid belt in our solar system. LÄS MER

  5. 4. Debris disks and the search for life in the universe

    Författare :Gianni Cataldi; Alexis Brandeker; Jean-Charles Augereau; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; debris disks; astrobiology; Astronomy; astronomi;

    Sammanfattning : Circumstellar debris disks are the extrasolar analogues of the asteroid belt and the Kuiper belt. These disks consist of comets and leftover planetesimals that continuously collide to produce copious amounts of circumstellar dust that can be observed as infrared excess or in resolved imaging. LÄS MER

  7. 5. High-contrast imaging of low-mass companions and debris disks

    Författare :Ruben Asensio Torres; Markus Janson; Subhanjoy Mohanty; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Direct imaging; extrasolar planets; debris disks; planet formation; high angular resolution; Astronomy; astronomi;

    Sammanfattning : The search for exoplanets, i.e., planets orbiting other stars than the Sun, is a relatively new research field, but has already established itself as one of the most prolific and intriguing areas of astronomy. LÄS MER