Essays about: "reddening"

Showing result 1 - 5 of 6 essays containing the word reddening.

  1. 1. Analyzing the dust of the Nearby Universe

    University essay from Uppsala universitet/Observationell astrofysik

    Author : Jimmy Kjellqvist; [2021]
    Keywords : Intergalactic dust; cosmology; cosmological measurements; quasars; Intergalaktiskt stoft; kosmologi; kosmologiska mätningar; kvasarer;

    Abstract : The aim of this master thesis is to investigate the influence of intergalactic duston astronomical observations. The current cosmological paradigm of an acceleratingcosmic expansion is supported by observations of Type Ia supernovae. READ MORE

  3. 2. Foundation for an analysis of the dust of theNearby Universe

    University essay from Uppsala universitet/Institutionen för fysik och astronomi

    Author : Jimmy Kjellqvist; [2021]
    Keywords : Intergalacitc dust; dust distribution; cosmology; cosmological measurements; quasars;

    Abstract : The current cosmological paradigm of an accelerating cosmic expansion issupported by observations of Type Ia supernovae. However, the light emittedby these and other cosmological sources is not only redshifted by cosmicexpansion but will also interact with matter along the light path. READ MORE

  4. 3. The ultraviolet spectral slope of high-redshift galaxies

    University essay from Uppsala universitet/Observationell astrofysik

    Author : Ludvig Sjöbom; [2016]
    Keywords : galaxies: high-redshift; observational astronomy; ultraviolet: galaxies; galaxies: evolution;

    Abstract : The slope of the ultraviolet continuum emissions from a galaxy between 1250 and 2600 Å provides insights about several facets of the galaxy. Mainly, it is well-correlated with the amount of dust. This work presents a search for objects whose UV-continuum slopes are excessively steep, as well as suggestions for follow-up. READ MORE

  5. 4. Extinction in the solar neighborhood : A comparative study of two methods used to measure reddening towards individual stars

    University essay from Uppsala universitet/Observationell astrofysik

    Author : Elmer Rådahl; [2016]
    Keywords : interstellar; extinction; reddening; local neighborhood; sodium lines; opacity maps; interstellär; extinkion; rödfärgning; natrium linjer; opacitetskartor;

    Abstract : Interstellar extinction and reddening are inescapable sources of uncertainty in the study of astronomical objects. Many creative ways to measure its effects have been developed, two of them being evaluated in this study. READ MORE

  6. 5. Complete genome characterization of barley yellow dwarf virus-OYV

    University essay from SLU/Department of Plant Biology (from 140101)

    Author : Kanitha Sathees; [2016]
    Keywords : complete nucleotide sequence; genome organization; barley yellow dwarf virus-OYV BYDV-OYV ; Luteovirus; recombination;

    Abstract : Barley yellow dwarf-associated viruses (BYD-associated viruses) belong to the family Luteoviridae and are of high economical relevance for cultivation of cereals. BYD-associated viruses are phloem-restricted pathogens that cause yellowing and reddening of leaves, plant dwarfing and reduction in size and number of grains. READ MORE