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Lessons from cosmic history: The case for a linear star formation -- H2 relation
R. Feldmann
Observations show that star formation in galaxies is closely correlated with the abundance of molecular hydrogen. Modeling this empirical relation from first principles proves chal…
The relation between mid-plane pressure and molecular hydrogen in galaxies: Environmental dependence
Robert Feldmann, Jose Hernandez, Nickolay Y. Gnedin
Molecular hydrogen (H2) is the primary component of the reservoirs of cold, dense gas that fuel star formation in our galaxy. While the H2 abundance is ultimately regulated by phys…
Circum-Galactic Gas and the Isotropic Gamma Ray Background
Robert Feldmann, Dan Hooper, Nickolay Y. Gnedin
Interactions of cosmic rays with the interstellar gas and radiation fields of the Milky Way provide the majority of the gamma rays observed by the Fermi Gamma Ray Space Telescope.…
The X-factor in Galaxies: II. The molecular hydrogen -- star formation relation
Robert Feldmann, Nickolay Y. Gnedin, Andrey V. Kravtsov
There is ample observational evidence that the star formation rate (SFR) surface density, Sigma_SFR, is closely correlated with the surface density of molecular hydrogen, Sigma_H2.…
The fate of high redshift massive compact galaxies in dense environments
Tobias Kaufmann, Lucio Mayer, Marcella Carollo +1
Massive compact galaxies seem to be more common at high redshift than in the local universe, especially in denser environments. To investigate the fate of such massive galaxies ide…