Journal article
Enhanced X-ray emission from candidate Lyman continuum emitting galaxies
Monthly notices of the Royal Astronomical Society, Vol.487(3), pp.4093-4101
06/29/2019
DOI: 10.1093/mnras/stz1574
Abstract
X-ray binaries may have helped reionize the early Universe by enabling Lyman
continuum escape. We analyzed a set of 8 local galaxies that are potential
Lyman leaking galaxies, identified by a blue color and weak emission lines,
using Chandra X-ray observations. Five of the galaxies feature X-ray sources,
while three galaxies are not significantly detected in X-rays. X-ray
luminosities were found for the galaxies and X-ray sources. Four of the
galaxies have elevated X-ray luminosity versus what would be expected based on
star formation rate and metallicity. The presence of detected X-ray sources
within the galaxies is found to correlate with the ratio of the star formation
rate estimated from the near-ultraviolet flux to that estimated from the
infrared. This implies reduced obscuration due to dust in the galaxies with
X-ray sources. These results support the idea that X-ray binaries may be an
important part of the process of reionziation.
Details
- Title: Subtitle
- Enhanced X-ray emission from candidate Lyman continuum emitting galaxies
- Creators
- Jesse Bluem - University of IowaPhilip Kaaret - University of IowaAndrea Prestwich - Harvard UniversityMatthew Brorby - Harvard University
- Resource Type
- Journal article
- Publication Details
- Monthly notices of the Royal Astronomical Society, Vol.487(3), pp.4093-4101
- DOI
- 10.1093/mnras/stz1574
- ISSN
- 0035-8711
- eISSN
- 1365-2966
- Publisher
- Oxford University Press
- Grant note
- DOI: 10.13039/100000104, name: National Aeronautics and Space Administration, award: GO5-18076X, GO5-16081X, NAS8-03060; DOI: 10.13039/100009207, name: Smithsonian Astrophysical Observatory
- Language
- English
- Date published
- 06/29/2019
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984199677802771
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