Essays about: "M dwarf stars"

Showing result 1 - 5 of 6 essays containing the words M dwarf stars.

  1. 1. Starbursts at Cosmic Dawn : Formation of Globular Clusters, Ultra-Faint Dwarfs, and Population III star clusters at z > 6

    University essay from Stockholms universitet/Institutionen för astronomi

    Author : Olof Nebrin; [2022]
    Keywords : Cosmology; Galaxy Formation; Globular Clusters; First Stars; Dark Matter; Cosmic Dawn; Reionization; Ultra-Faint Dwarfs;

    Abstract : In the standard model of cosmology (ΛCDM) the first stars, star clusters, and galaxies are expected to have formed in short bursts of star formation in low-mass dark matter halos at high redshifts (). Up to this point, attempts to predict the properties and abundances of these luminous objects have made use of numerically expensive cosmological simulations. READ MORE

  3. 2. The magnetic fields of exoplanet hostM-dwarf stars : The magnetic fields of exoplanet hostM-dwarf stars

    University essay from Uppsala universitet/Teoretisk astrofysik

    Author : Thomas Herard; [2021]
    Keywords : ;

    Abstract : The majority of stars in the Milky Way are M dwarfs whichmake up 75 % of stars in the vicinity of the sun. As the magneticfield of stars can significantly affect the interiors and theatmospheres of the exoplanets they host within the stellar system,characterising this magnetic field is of major importance. READ MORE

  4. 3. Forbidden oxygen in the Milky Way disk

    University essay from Lunds universitet/Astronomi - Genomgår omorganisation

    Author : Asma Sahli; [2017]
    Keywords : Physics and Astronomy;

    Abstract : Oxygen is produced inside massive stars and dispersed into the interstellar medium mainly through type II supernovae explosions. This element, which is the third most abundant one in the Universe, plays an important role in tracing the Galactic chemical history and evolution. READ MORE

  5. 4. Identification of elements and molecules in the spectra of an M dwarf star using high resolution infrared spectroscopy.

    University essay from Uppsala universitet/Institutionen för fysik och astronomi

    Author : Markus Pudas; [2017]
    Keywords : M dwarf stars; line list ; spectroscopy ; high resolution infrared; telluric spectra;

    Abstract : M dwarfs are abundant and long-lived stellar objects. The formation of planets around stars in stellar systems is believed to be metallicity dependent. To determine the metallicity with synthetic spectrum analysis, the elements producing the absorption lines ofthe spectra first have to be identified. READ MORE

  6. 5. Analyses of cool stars using molecular lines

    University essay from Teoretisk astrofysik

    Author : Thomas Nordlander; [2012]
    Keywords : ;

    Abstract : M-dwarfs are the coolest type of hydrogen-burning stars, and three times as numerous as all other stars in the Galaxy combined. Thanks to their low masses, luminosities and surface temperatures, they are potentially the best targets for finding exoplanets capable of supporting life. READ MORE