%0 Generic %1 jaacks2017first %A Jaacks, Jason %A Finkelstein, Steven L. %A Bromm, Volker %D 2017 %K dust first galaxies %T Dust in the first galaxies %U http://arxiv.org/abs/1709.06647 %X Using cosmological volume simulations and a custom built sub-grid model for Pop III star formation, we examine the baseline dust extinction in the first galaxies due to Pop~III metal enrichment in the first billion years of cosmic history. We find that while the most enriched, high-density lines of sight in primordial galaxies can experience a measurable amount of extinction from Pop III dust ($E(B-V)_max=0.07,\ A_V,max\approx0.28$), the average extinction is very low with $łeft< E(B-V) \right> 10^-3$. We derive a power-law relationship between dark matter halo mass and extinction of $E(B-V)M_halo^0.80$. Performing a Monte Carlo parameter study, we establish the baseline reddening of the UV spectra of dwarf galaxies at high redshift due to Pop III enrichment only. With this method, we find $łeft<\beta_UV\right>-2.72\pm0.12$, which is both nearly halo mass and redshift independent.

@misc{jaacks2017first, abstract = {Using cosmological volume simulations and a custom built sub-grid model for Pop III star formation, we examine the baseline dust extinction in the first galaxies due to Pop~III metal enrichment in the first billion years of cosmic history. We find that while the most enriched, high-density lines of sight in primordial galaxies can experience a measurable amount of extinction from Pop III dust ($E(B-V)_{\rm max}=0.07,\ A_{\rm V,max}\approx0.28$), the average extinction is very low with $\left< E(B-V) \right> \lesssim 10^{-3}$. We derive a power-law relationship between dark matter halo mass and extinction of $E(B-V)\propto M_{\rm halo}^{0.80}$. Performing a Monte Carlo parameter study, we establish the baseline reddening of the UV spectra of dwarf galaxies at high redshift due to Pop III enrichment only. With this method, we find $\left<\beta_{\rm UV}\right>-2.72\pm0.12$, which is both nearly halo mass and redshift independent.}, added-at = {2017-09-21T10:27:39.000+0200}, author = {Jaacks, Jason and Finkelstein, Steven L. and Bromm, Volker}, biburl = {https://www.bibsonomy.org/bibtex/2605f8cd9787224615118c09e36684c01/miki}, description = {[1709.06647] Dust in the first galaxies}, interhash = {61af2c41f216b43d825e80e267c219e6}, intrahash = {605f8cd9787224615118c09e36684c01}, keywords = {dust first galaxies}, note = {cite arxiv:1709.06647Comment: 6 pages, 5 figures}, timestamp = {2017-09-21T10:27:39.000+0200}, title = {Dust in the first galaxies}, url = {http://arxiv.org/abs/1709.06647}, year = 2017 }