Collisions of the first clouds

Details Collisions of the first clouds Collisions of the first clouds

Jan 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apj...439...11d&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 439, no. 1, p. 11-13

Astronomy and Astrophysics

Astrophysics

1

Astronomical Models, Collisions, Cosmology, Galactic Evolution, Hydrogen Clouds, Universe, Cooling, Hydrodynamics, Hydrogen Plasma, Mathematical Models, Photon Density

Scientific paper

We study the collisions of the first clouds of mass 104 to 1012 solar mass, formed in the universe. We start the calculations at the beginning of the recombinant era and take into account the expansion of the universe, photon drag, photon cooling, and the formation, destruction, and cooling of H2 molecules. For the range of masses and velocities studied, we conclude that the clouds can merge but collisions between two clouds with formation of shocked regions do not occur.

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