Dust in the Wind: Composition and Kinematics of Galaxy Outflows at the Peak Epoch of Star Formation
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In this article, Keck/ESI spectra of nine gravitationally lensed z = 2-3 star forming galaxies were used to investigate the chemical composition and mass loss rate of outflows.Abstract:
Galactic-scale outflows regulate the stellar mass growth and chemical enrichment of galaxies, yet key outflow properties such as the chemical composition and mass loss rate remain largely unknown. We address these properties with Keck/ESI echellete spectra of nine gravitationally lensed z=2-3 star forming galaxies, probing a range of absorption transitions. Interstellar absorption in our sample is dominated by outflowing material, with typical velocities -150 km/s. Approximately 80% of the total column density is associated with a net outflow. Mass loss rates in the low ionization phase are comparable to or in excess of the star formation rate, with total outflow rates likely higher when accounting for ionized gas. Of order half of the heavy element yield from star formation is ejected in the low ionization phase, confirming that outflows play a critical role in regulating galaxy chemical evolution. Covering fractions vary and are in general non-uniform, with most galaxies having incomplete covering by the low ions across all velocities. Low ion abundance patterns show remarkably little scatter, revealing a distinct "chemical fingerprint" of outflows. Gas phase Si/Fe abundances are significantly super-solar ([Si/Fe]$\gtrsim$0.4) indicating a combination of $\alpha$-enhancement and dust depletion. Derived properties are comparable to the most kinematically broad, metal-rich, and depleted intergalactic absorption systems at similar redshifts, suggesting that these extreme systems are associated with galactic outflows at impact parameters conservatively within a few tens of kpc. We discuss implications of the abundance patterns in z=2-3 galaxies and the role of outflows at this epoch.read more
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References
More filters
Journal ArticleDOI
The Chemical Composition of the Sun
TL;DR: The solar chemical composition is an important ingredient in our understanding of the formation, structure, and evolution of both the Sun and our Solar System as discussed by the authors, and it is an essential refer...
Journal ArticleDOI
The Origin of the Mass-Metallicity Relation: Insights from 53,000 Star-forming Galaxies in the Sloan Digital Sky Survey
Christy Tremonti,Christy Tremonti,Timothy M. Heckman,Guinevere Kauffmann,Jarle Brinchmann,Stephane Charlot,Simon D. M. White,Mark Seibert,Mark Seibert,Eric W. Peng,Eric W. Peng,David J. Schlegel,Alan Uomoto,Alan Uomoto,Masataka Fukugita,Jon Brinkmann +15 more
TL;DR: In this paper, the relation between stellar mass and gas-phase metallicity was studied using the Sloan Digital Sky Survey imaging and spectroscopy of ~53,000 star-forming galaxies at z = 0.1.
Journal ArticleDOI
The Epochs of Early-Type Galaxy Formation as a Function of Environment
TL;DR: In this article, the authors derived ages, total metallicities, and element ratios of 124 early-type galaxies in high and low-density environments, and analyzed the data by comparison with mock galaxy samples created through Monte Carlo simulations taking the typical average observational errors into account.
Journal ArticleDOI
Radiative Transfer in a Clumpy Universe. II. The Ultraviolet Extragalactic Background
Francesco Haardt,Piero Madau +1 more
TL;DR: In this article, a detailed calculation of the propagation of AGN-like ionizing radiation through the intergalactic space is presented, and it is shown that the universe will be more opaque above $4\,$Ryd than previously estimated.
Journal ArticleDOI
Cosmic Star Formation History
Piero Madau,Mark Dickinson +1 more
TL;DR: In this paper, the authors review the range of complementary techniques and theoretical tools that allow astronomers to map the cosmic history of star formation, heavy element production, and reionization of the Universe from the cosmic "dark ages" to the present epoch.
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