Essays about: "initial-mass function"

Showing result 1 - 5 of 6 essays containing the words initial-mass function.

  1. 1. Photometry of carbon star wind-modelsat solar & sub-solar metallicities

    University essay from Uppsala universitet/Institutionen för fysik och astronomi

    Author : Vlad Rastau; [2020]
    Keywords : C-type AGB; photometry; mass-loss;

    Abstract : Asymptotic giant branch stars (AGB) are cool, luminous stars withan initial mass of approximately 0.8 to 8 solar masses. Towards theend of their lives they undergo heavy mass loss, a process thoughtto be caused by dust-driven winds. When it comes to carbon-richAGB stars, i. READ MORE

  3. 2. Do variations in the initial mass function affect galaxy evolution?

    University essay from Lunds universitet/Astronomi - Genomgår omorganisation; Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation

    Author : Mateo Prgomet; [2020]
    Keywords : galaxy; galaxy formation; galaxy evolution; feedback; star formation; ultra faint dwarf galaxy; initial mass function; variations; universe; redshift; hydrodynamics; cosmology; zoomed-in simulations Galaxy formation and evolution; galaxy feedback; stellar feedback; IMF variations; cosmological zoomed-in simulations; Physics and Astronomy;

    Abstract : The initial mass function (IMF) describes the stellar mass distribution for a population of stars at birth. This parameter represents a topic of long standing discussion within astronomy due to its apparent insensitive nature to environmental conditions. However, in the last decade, significant evidence suggesting the contrary has been presented. READ MORE

  4. 3. From the bulge region to the outer disk: Tracing the α-enhancement level in the Galactic thin and thick disks

    University essay from Lunds universitet/Astronomi - Genomgår omorganisation

    Author : Elin Sandvik; [2020]
    Keywords : Chemical abundance; star formation rate; initial-mass function; APOGEE; Milky Way; Physics and Astronomy;

    Abstract : One of the biggest mysteries astronomers wish to unveil is the formation and evolution of galaxies. Properties of our own galaxy, the Milky Way, can provide great insight into these. The star formation rate (SFR) and whether it varies with distance from the galactic centre (GC), is one of these properties. READ MORE

  5. 4. The first supernovae and the mass distribution of Population III stars

    University essay from Lunds universitet/Astronomi - Genomgår omorganisation

    Author : Martin Mikitas; [2018]
    Keywords : Astronomy; Supernovae; STARFIT; Salpeter; IMF; Physics and Astronomy;

    Abstract : The properties of the early Milky Way are quite mysterious and some are completely unknown even today. This study is the first one ever to analyze the mass distribution of Population III bulge stars. READ MORE

  6. 5. A study of the stellar populations in the Kepler field

    University essay from Lunds universitet/Astronomi - Genomgår omorganisation

    Author : Mark O Reilly; [2017]
    Keywords : Physics and Astronomy;

    Abstract : Studying the formation and evolution of galaxies is a fundamental problem in astronomy that warrants repeated investigation by astronomers. How do spiral galaxies like our own come to have its distinct spiral arms? How do stars and their properties change over time and will they continue to evolve in the same manner? To try and attempt to answer such questions we need to look to our own Galaxy the Milky Way. READ MORE