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| Paper: |
Galaxies at z∼ 7 and Cold Gas at z∼ 1.6 |
| Volume: |
440, UP2010: Have Observations Revealed a Variable Upper End of the Initial Mass Function? |
| Page: |
397 |
| Authors: |
Giavalisco, M. |
| Abstract: |
This contribution previews the results of two upcoming papers, one about the
spectroscopic identification of star-forming galaxies at z∼ 7, their
Lyα properties and the implications for the IGM neutral fraction at
that epoch (Fontana et al. 2010); and another about the discovery of massive
amounts of cold gas (T ∼ 104 K, NH > 1020 cm–2, M ∼ 1012 M☉) in a large overdensity of galaxies at z ∼ 1.6 with chemical
composition apparently more pristine than that of the gas in the outflows of
star-forming galaxies in the same overdensity and also at comparable
redshift, arguably a plausible candidate to feed putative “cold accretion”,
if this thing exists (Giavalisco et al. 2010). |
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