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A Stellar Feedback Origin for Neutral Hydrogen in High-Redshift Quasar-Mass Halos

Faucher-Giguère, Claude-André and Feldmann, Robert and Quataert, Eliot and Kereš, Dušan and Hopkins, Philip F. and Murray, Norman (2016) A Stellar Feedback Origin for Neutral Hydrogen in High-Redshift Quasar-Mass Halos. Monthly Notices of the Royal Astronomical Society: Letters, 461 (1). L32-L36. ISSN 1745-3933. http://resolver.caltech.edu/CaltechAUTHORS:20160202-075033622

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Abstract

Observations of quasar pairs reveal that quasar host halos at z ~ 2 have large covering fractions of cool dense gas (≳ 60% for Lyman limit systems within a projected virial radius). Most simulations have so far failed to explain these large observed covering fractions. We analyze a new set of 15 simulated massive halos with explicit stellar feedback from the FIRE project, covering the halo mass range M_h ≈ 2 x 10^(12) - 10^(13) M_☉ at z = 2. This extends our previous analysis of the circum-galactic medium of high-redshift galaxies to more massive halos. Feedback from active galactic nuclei (AGN) is not included in these simulations. We find covering fractions consistent with those observed around z ~ 2 quasars. The large HI covering fractions arise from star formation-driven galactic winds, including winds from low-mass satellite galaxies that interact with the cosmological infalling filaments in which they are typically embedded. The simulated covering fractions increase with both halo mass and redshift over the ranges covered, as well as with resolution. Our simulations predict that galaxies occupying dark matter halos of mass similar to quasars but without a luminous AGN should have Lyman limit system covering fractions comparable to quasars. This prediction can be tested by measuring covering fractions transverse to sub-millimeter galaxies or to more quiescent galaxies selected based on their high stellar mass.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1093/mnrasl/slw091DOIArticle
http://mnrasl.oxfordjournals.org/content/461/1/L32.abstractPublisherArticle
http://arxiv.org/abs/1601.07188arXivDiscussion Paper
ORCID:
AuthorORCID
Feldmann, Robert0000-0002-1109-1919
Quataert, Eliot0000-0001-9185-5044
Kereš, Dušan0000-0002-1666-7067
Hopkins, Philip F.0000-0003-3729-1684
Additional Information:© 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. Accepted 2016 May 6. Received 2016 May 5; in original form 2016 January 26. We grateful for useful discussions with Xavier Prochaska, Joe Hennawi, Ali Rahmati, Zach Hafen, Daniel Anglés-Alcázar, and Alexander Muratov. CAFG was supported by NSF grants AST-1412836 and AST-1517491, by NASA grant NNX15AB22G, and by STScI grants HST-AR-14293.001-A and HST-GO-14268.022-A. RF was supported by NASA through Hubble Fellowship grant HF-51304.01-A. EQ was supported by NASA ATP grant 12-ATP-120183, a Simons Investigator award from the Simons Foundation, and the David and Lucile Packard Foundation. DK was supported by NSF grant AST-1412153. Support for PFH was provided by an Alfred P. Sloan Research Fellowship, NASA ATP grant NNX14AH35G, and NSF grants AST-1411920 and AST-1455342. The simulations analysed in this Letter were run on XSEDE computational resources (allocations TG-AST120025, TG-AST130039, and TG-AST140023) and on NASA High-End Computing resources (allocations SMD-14-5492, SMD-14-5189, and SMD-15-6530).
Group:TAPIR
Funders:
Funding AgencyGrant Number
NSFAST-1412836
NSFAST-1517491
NASANNX15AB22G
NASAHST-AR-14293.001-A
NASA Hubble FellowshipHF-51304.01-A
NASA12-ATP-120183
Simons FoundationUNSPECIFIED
David and Lucile Packard FoundationUNSPECIFIED
NSFAST-1412153
Alfred P. Sloan FoundationUNSPECIFIED
NASANNX14AH35G
NSFAST-1411920
NSFAST-1455342
NSFTG-AST120025
NSFTG-AST130039
NSFTG-AST140023
NASAHST-GO-14268.022-A
Subject Keywords:galaxies: formation - galaxies: evolution - galaxies: haloes - quasars: absorption lines - intergalactic medium - cosmology: theory
Record Number:CaltechAUTHORS:20160202-075033622
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20160202-075033622
Official Citation:Claude-André Faucher-Giguère, Robert Feldmann, Eliot Quataert, Dušan Kereš, Philip F. Hopkins, and Norman Murray A stellar feedback origin for neutral hydrogen in high-redshift quasar-mass haloes MNRAS (September 01, 2016) Vol. 461 L32-L36 doi:10.1093/mnrasl/slw091 first published online May 11, 2016
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:64145
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:03 Feb 2016 00:17
Last Modified:01 Nov 2017 16:54

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