Search for dissertations about: "Photometry"

Showing result 1 - 5 of 26 swedish dissertations containing the word Photometry.

  1. 1. Deep photometry of galaxies : to see or not to see /Magnus Näslund

    University dissertation from Stockholm : Stockholms universitet

    Author : Magnus Näslund; Stockholms universitet.; [1998]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURAL SCIENCES Physics Astronomy and astrophysics Astronomy; NATURVETENSKAP Fysik Astronomi och astrofysik Astronomi; astronomi; Astronomy;

    Abstract : The edge-on spiral galaxy NGC 4565 and the distant galaxy cluster MS2255.7+2039 have been studied at optical wavelengths with deep photometry using the 2.56 m Nordic Optical Telescope on La Palma.By careful data reductions we traced the surface brightness of NGC 4565 to faint levels. READ MORE

  2. 2. A study of blue low surface-brightness galaxies : surface photometry and spectroscopy

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Jari Rönnback; Uppsala universitet.; [1993]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : .... READ MORE

  3. 3. Photometry of Resolved Stellar Populations in Local Group Galaxies

    University dissertation from Lund Observatory, Lund University

    Author : Daniel Faria; Lunds universitet.; Lund University.; [2006]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Astronomi; Astronomy; Local Group; Galaxy: halo; Galaxies: dwarf; Galaxy: stellar content; Galaxies: photometry; Techniques: photometric; Stars: fundamental parameters;

    Abstract : Popular Abstract in Swedish En viktig fråga inom modern astrofysik är hur galaxer bildas och utvecklas. Under de senaste decennierna har flera teorier för hur detta sker lagts fram, vilket har lett till att de flesta astronomer idag tror på en modell i vilken större galaxer, så som vår egen Vintergata, bildas genom sammanslagning av mindre galaxer. READ MORE

  4. 4. On the origin and evolution of blue compact galaxies

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Göran A. Östlin; Uppsala universitet.; [1998]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Astronomy; galaxies - compact; formation; evolution; starburst; interactions; dwarf; photometry; kinematics and dynamics; low surface brightness galaxies; Astronomi; NATURAL SCIENCES Physics Astronomy and astrophysics; NATURVETENSKAP Fysik Astronomi och astrofysik; astronomi; Astronomy;

    Abstract : This thesis is focused on the origin and evolution of blue compact galaxies (BCGs). BCGs are low mass galaxies characterised by blue colours, low chemical abundances and high star formation rates. The gas consumtion time scale is considerable shorter than the age of the universe and thus the high star formation rate must be transient. READ MORE

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

    University dissertation from Stockholm : Department of Astronomy, Stockholm University

    Author : Ricky Nilsson; Stockholms universitet.; [2012]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; circumstellar disks; debris disks; Kuiper belts; planet formation; submillimeter imaging; photometry; coronagraphy; integral-field spectroscopy; astronomi; Astronomy;

    Abstract : 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. READ MORE