Local Group Dwarf Galaxies and the Star Formation Law at High Redshift | Zendy

Nickolay Y. Gnedin | Zendy

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Local Group Dwarf Galaxies and the Star Formation Law at High Redshift

Author(s) -

Nickolay Y. Gnedin

Publication year - 2000

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/312708

Subject(s) - physics , astrophysics , local group , galaxy , dwarf galaxy , star formation , universe , redshift , astronomy , star (game theory)

I show how the existing observational data on Local Group dwarf galaxies can be used to estimate the average star formation law during the first 3 Gyr of the history of the universe. I find that the observational data are consistent with the orthodox Schmidt law with a star formation efficiency of about 4% if the star formation is continuous (during the first 3 Gyr). The efficiency is proportionally higher if most of the gas in the dwarfs was consumed (and never replenished) in a short time interval well before the universe turned 3 Gyr.

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