The search for Population III stars
arXiv:0807.4634 · doi:10.1017/S1743921308024605
Abstract
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 1640A 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.
Contribution for the Proceedings of the IAU Symposium No. 255 on "Low-Metallicity Star Formation: From the First Stars to Dwarf Galaxies"
References in corpus (12)
- The Nucleosynthetic Signature of Population III
- Rest-Frame Ultraviolet Spectra of z~3 Lyman Break Galaxies
- The Subaru/XMM-Newton Deep Survey (SXDS). IV. Evolution of Lya Emitters from z=3.1 to 5.7 in the 1 deg^2 Field: Luminosity Functions and AGN
- First stars, very massive black holes and metals
- Population III stars: hidden or disappeared ?
- Early Reionization by the First Galaxies
- The Detectability of the First Stars and Their Cluster Enrichment Signatures
- Spectroscopic Properties of the z=4.5 Lyman-alpha Emitters
- Massive star formation in a gravitationally-lensed HII-galaxy at z=3.357
- A photometric survey for Lyalpha-HeII dual emitters: Searching for Population III stars in high-redshift galaxies
- An Observational Pursuit for Population III Stars in a Ly_alpha Emitter at z=6.33 through HeII Emission
- RX J0848+4456: Disentangling a Moderate Redshift Cluster