%0 Generic %1 pratt2017spread %A Pratt, C. T. %A Stocke, J. T. %A Keeney, B. A. %A Danforth, C. W. %D 2017 %K IGM low-z metals spread %T The Spread of Metals into the Low-Redshift Intergalactic Medium %U http://arxiv.org/abs/1706.05103 %X We investigate the association between galaxies and metal-line and metal-free absorbers in the local universe ($z < 0.16$) using a large compilation of FUV spectra of bright AGN targets observed with the Cosmic Origins Spectrograph aboard the Hubble Space Telescope. In this homogeneous sample of 24 O VI detections ($Z 0.1\,Z_ødot$) and 25 non-detections, the maximum distance O VI extends from galaxies of various luminosities is $\sim0.6$ Mpc, or $\sim5\,R_vir$, confirming and refining earlier results. This is an important value that must be matched by numerical simulations, which input the strength of galactic winds at the sub-grid level. We present evidence that the primary contributors to the spread of metals into the circum- and intergalactic media are $L<L^*$ galaxies. The maximum distances that metals are transported from these galaxies is comparable to the size of a small, spiral-rich group of galaxies. This suggests that, while rather pristine intergalactic material may accrete onto these groups where it can mix with metal-bearing clouds, the metals produced by the group galaxies may not leave the group, creating a nearly "closed box" for galactic evolution.

@misc{pratt2017spread, abstract = {We investigate the association between galaxies and metal-line and metal-free absorbers in the local universe ($z < 0.16$) using a large compilation of FUV spectra of bright AGN targets observed with the Cosmic Origins Spectrograph aboard the Hubble Space Telescope. In this homogeneous sample of 24 O VI detections ($Z \geq 0.1\,Z_{\odot}$) and 25 non-detections, the maximum distance O VI extends from galaxies of various luminosities is $\sim0.6$ Mpc, or $\sim5\,R_{vir}$, confirming and refining earlier results. This is an important value that must be matched by numerical simulations, which input the strength of galactic winds at the sub-grid level. We present evidence that the primary contributors to the spread of metals into the circum- and intergalactic media are $L<L^*$ galaxies. The maximum distances that metals are transported from these galaxies is comparable to the size of a small, spiral-rich group of galaxies. This suggests that, while rather pristine intergalactic material may accrete onto these groups where it can mix with metal-bearing clouds, the metals produced by the group galaxies may not leave the group, creating a nearly "closed box" for galactic evolution.}, added-at = {2017-06-19T20:23:10.000+0200}, author = {Pratt, C. T. and Stocke, J. T. and Keeney, B. A. and Danforth, C. W.}, biburl = {https://www.bibsonomy.org/bibtex/22d1eff87a1735fe666c2adf3bc74d9f7/miki}, description = {[1706.05103] The Spread of Metals into the Low-Redshift Intergalactic Medium}, interhash = {6266122c758a6e8ca4b6e8b3ac7df72b}, intrahash = {2d1eff87a1735fe666c2adf3bc74d9f7}, keywords = {IGM low-z metals spread}, note = {cite arxiv:1706.05103Comment: 11 pages, 3 figures, 2 tables}, timestamp = {2017-06-19T20:23:10.000+0200}, title = {The Spread of Metals into the Low-Redshift Intergalactic Medium}, url = {http://arxiv.org/abs/1706.05103}, year = 2017 }