Essays about: "Spectroscopy and stars"
Showing result 6 - 10 of 32 essays containing the words Spectroscopy and stars.
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6. An Infrared Stellar Thermometer
University essay from Lunds universitet/Astronomi - Genomgår omorganisationAbstract : Infrared (IR) spectroscopy has many advantages over optical, one of which is allowing us to see through intergalactic dust, letting us probe deeper into space and dust-dense regions such as galactic centers. However the investigating the IR spectral range is a relatively new field, owing to recent developments in detector technology, and stellar parameter determination in IR is not well researched. READ MORE
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7. Towards a high resolution view of infrared line formation
University essay from Lunds universitet/Astronomi - Genomgår omorganisationAbstract : Observing in the infrared has many benefits, such as seeing through the interstellar dust in the galaxy, easier use of adaptive optics, and better flux ratios for direct observations of exoplanets. Before the infrared spectral range can be utilised for highly accurate stellar spectroscopy there is a need for a better understanding of both stellar modelling and the atomic physics that go into forming spectral lines. READ MORE
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8. Examining LUMBA UVES pipeline spectroscopy on giant and sub-giant stars of M67
University essay from Uppsala universitet/Observationell astrofysikAbstract : In this work, the efficiency of the LUMBA UVES pipeline for processing of spectroscopic observations is tested by use on 23 high-resolution spectra of the open star cluster M67. An abundance trend discovered by Gavel et al. (2019) concerning iron abundances of giant and sub-giant stars of that cluster is examined. READ MORE
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9. Advanced Characterization of Exoplanet Host Stars
University essay from Uppsala universitet/Observationell astrofysikAbstract : The spectroscopic determination of stellar properties is important for subsequent studies of exoplanet atmospheres. In this thesis, HARPS data for 6 exoplanet-hosting, late-type stars is processed to achieve an average signal-to-noise ratio of ~105. READ MORE
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10. Archaeologic inspection of the Milky Way using vibrations of a fossil : Seismic, spectroscopic and kinematic characterization of a binary metal-poor Halo star
University essay from Uppsala universitet/Observationell astrofysikAbstract : The Milky Way has undergone several mergers with other galaxies during its lifetime. The mergers have been identified via stellar debris in the Halo of the Milky Way. The practice of mapping these mergers is called galactic archaeology. To perform this archaeologic inspection, three stellar features must be mapped: chemistry, kinematics and age. READ MORE
