Sökning: "Outflows"

Visar resultat 16 - 20 av 41 avhandlingar innehållade ordet Outflows.

  1. 16. Companion wind shaping in binaries involving an AGB star

    Författare :Lam Doan; Sofia Ramstedt; Eric Lagadec; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; AGB and post-AGB stars; mass-loss; radio lines; binaries; wind shaping; Astronomy; Astronomi;

    Sammanfattning : Stars of initial masses between 0.8-8 M☉ will become "asymptotic giant branch" (AGB) stars during the final stages of their evolution. During this phase, the stars are characterized by low velocity and high-density winds. LÄS MER

  3. 17. Observing Lyman alpha emitters - How does Lyman alpha escape from galaxies?

    Författare :Andreas Sandberg; Göran Östlin; Lucia Guaita; Matthew Hayes; Caryl Gronwall; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Astronomy; astronomi;

    Sammanfattning : The Lyman alpha (Lyα) emission line has grown to become one of the most successful tools for finding galaxies at high redshift. At redshifts corresponding to the early cosmic times of reionization and primeval galaxy formation, the wavelength of Lyα is still accessible with ground-based facilities. LÄS MER

  4. 18. Star clusters as engines of galaxy evolution

    Författare :Mattia Sirressi; Angela Adamo; Matthew J. Hayes; Johan Fynbo; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Stars form and live in hierarchical structures such as star clusters on the smallest scales up to groups of galaxies on the largest scales. The role of young and massive star clusters in the evolution of the host galaxies is one of the most active fields of research in modern astronomy. LÄS MER

  5. 19. Heterogeneous Innovation and Labour Mobility

    Författare :Ding Ding; Pontus Braunerhjelm; Stam Erik; KTH; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; labor mobility; knowledge spillover; organizational learning; entrepreneurship; heterogeneous innovation; Nationalekonomi; Economics;

    Sammanfattning : Knowledge is a necessary and critically important factor in generating growth and increased prosperity. The extent to which such effects are materialized depends however on its diffusion and how it transcends into innovation, entrepreneurship and growing firms. LÄS MER

  7. 20. A study of galaxy evolution: stacking emission lines from distant galaxies

    Författare :Jean Baptiste Jolly; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Galaxies: evolution – Galaxies: high-redshift – methods: stacking – methods: data analysis – techniques: interferometric;

    Sammanfattning : To draw up a thorough description of galaxy evolution exhaustive observations are needed, of distant but mainly of faint galaxies. Describing low mass galaxies is important to move the focus from the tip of the iceberg. LÄS MER