Sökning: "M Palma"

Visar resultat 1 - 5 av 6 avhandlingar innehållade orden M Palma.

  1. 1. Exercitationis academicæ de palma caput II. & III. Quæ, inclytæ facultatis philosophicæ consensu publicæ ventilationi subjiciunt præses Olavus Celsius ... ac respondens s:æ r:æ m:tis alumnus Johannes Fabrin Vermelandus. Ad. d. [27] Febr. anno 1720

    Författare :Olof Celsius; Johan Fabrin; Olof Celsius; Uppsala universitet; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  3. 2. Observational Studies of the Chemical Evolution in the Galactic Thin and Thick Disks

    Författare :Thomas Bensby; Astronomi - Genomgår omorganisation; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Astronomy; Astronomi; Fysicumarkivet A:2004:Bensby;

    Sammanfattning : The origin and evolution of the thin and thick disks in the Galaxy have been studied by means of detailed stellar abundances. High-resolution spectra of 102 F and G dwarf stars have been obtained with the spectrographs on the ESO 3.6-m and ESO 1. LÄS MER

  4. 3. Infrarödfotometri : instrumentkonstruktion och observationer

    Författare :Björn Wennfors; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fotometri;

    Sammanfattning : An infrared photometer has been constructed at the Stockholm Observatory, It has an InSb detector cooled by solid nitrogen, and is specially designed to be portable, to be used at existing telescopes, not adapted for IR-work and to be used under non-ideal photometric conditions.The sky chopping, a differential measurement of the star and the background, necessary for infrared observations, Is accomplished by a cooled focal plane chopper with high efficiency,The aperture stop, necessary for suppressing the infrared radiation from the surroundings, is of a new construction which gives high accuracy,The filters, selecting the terrestrial infrared windows are cooled, and mounted in a filter wheel with 15 positions. LÄS MER

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

    Författare :Magnus Näslund; Nils Bergvall; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Astronomy; Astronomi; Astronomy; astronomi;

    Sammanfattning : 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. LÄS MER

  7. 5. Extinction in Molecular Clouds : Case of Barnard 335

    Författare :Sven Olofsson; Göran Olofsson; Kalevi Mattila; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ISM; interstellar medium; extinction; molecular cloud; Astronomy; astronomi; Astronomy; astronomi;

    Sammanfattning : The Bok globule B335 is a small molecular cloud in the solar neighbourhood near the galactic plane. The aim for this three-paper-study is to construct and analyze the extinction for this globule. The method we apply is to use the light from field stars behind the cloud in broadband filters ranging from UV to the mid-infrared. LÄS MER