TY - BOOK

T1 - Deep Emission Studies of High Redshift Absorption Selected Galaxies

T2 - Probing the Galaxy Population With Beacons From Afar

AU - Rhodin, Nils Henrik

PY - 2019

Y1 - 2019

N2 - A major goal in modern astrophysics is to understand how galaxies form and evolve. Normally, this is done by imaging a field of the sky and studying the objects detected. The drawback with such methods is a bias against objects that are too faint to be captured by telescopes. In my thesis, I attempt to push beyond such a “luminosity bias”. Instead, I have studied galaxies selected on gas cross-section. When these objects intervene sightlines to even more distant quasars, they produce characteristic absorption and essentially appear to us as cosmic silhouettes. My results from two observational campaigns and one study on simulations confirm that this technique is efficient at selecting low mass, faint galaxy populations – which presumably are the most abundant galaxies in the Universe. In addition, it reveals that complementary information from absorption and emission can provide insights to the underlying conditions that drive star formation, metal enrichment and galaxy evolution.

AB - A major goal in modern astrophysics is to understand how galaxies form and evolve. Normally, this is done by imaging a field of the sky and studying the objects detected. The drawback with such methods is a bias against objects that are too faint to be captured by telescopes. In my thesis, I attempt to push beyond such a “luminosity bias”. Instead, I have studied galaxies selected on gas cross-section. When these objects intervene sightlines to even more distant quasars, they produce characteristic absorption and essentially appear to us as cosmic silhouettes. My results from two observational campaigns and one study on simulations confirm that this technique is efficient at selecting low mass, faint galaxy populations – which presumably are the most abundant galaxies in the Universe. In addition, it reveals that complementary information from absorption and emission can provide insights to the underlying conditions that drive star formation, metal enrichment and galaxy evolution.

UR - https://soeg.kb.dk/permalink/45KBDK_KGL/1pioq0f/alma99123538757905763

M3 - Ph.D. thesis

BT - Deep Emission Studies of High Redshift Absorption Selected Galaxies

PB - Niels Bohr Institute, Faculty of Science, University of Copenhagen

ER -