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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



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ID: 421701.0, MPI für Astronomie / Publikationen_mpia
The search for population III stars
Authors:di Serego Alighieri, Sperello; Kurk, Jaron; Ciardi, Benedetta; Cimatti, Andrea; Daddi, Emanuele; Ferrara, Andrea
Language:English
Publisher:Cambridge Univ. Press
Place of Publication:Cambridge
Date of Publication (YYYY-MM-DD):2008
Title of Proceedings:Low-Metallicity Star Formation: From the First Stars to Dwarf Galaxies
Start Page:75
End Page:78
Title of Series:IAU Symposium
Volume (in Series):255
Name of Conference/Meeting:IAU Symposium
Review Status:not specified
Audience:Not Specified
Abstract / Description:Population III stars, the first generation of stars formed from primordial Big Bang material with a top--heavy IMF, should contribute substantially to the Universe reionization and they are crucial for understanding the early metal enrichment of galaxies. Therefore it is very important that these objects, foreseen by theories, are detected by observations. However PopIII stars, searched through the HeII 1640Å line signature, have remained elusive. We report about the search for the HeII line in a galaxy at z = 6.5, which is a very promising candidate. Unfortunately we are not yet able to show the results of this search. However we call attention to the possible detection of PopIII stars in a lensed HII dwarf galaxy at z = 3.4, which appeared in the literature some years ago, but has been overlooked.
Free Keywords:cosmology: observation; galaxies: formation; stars: chemically peculiar
Comment of the Author/Creator:Date: 2008, June 1, 2008
External Publication Status:published
Document Type:Conference-Paper
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:URL:http://adsabs.harvard.edu/abs/2008IAUS..255...75D [ID No:1]
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