English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

Using data from the DEEP2 galaxy redshift survey and the All WavelengthExtended Groth Strip International Survey we obtain stacked X-ray maps ofgalaxies at 0.7 < z < 1.0 as a function of stellar mass. We compute the totalX-ray counts of these galaxies and show that in the soft band (0.5--2,kev)there exists a significant correlation between galaxy X-ray counts and stellarmass at these redshifts. The best-fit relation between X-ray counts and stellarmass can be characterized by a power law with a slope of 0.58 +/- 0.1. We donot find any correlation between stellar mass and X-ray luminosities in thehard (2--7,kev) and ultra-hard (4--7,kev) bands. The derived hardness ratios ofour galaxies suggest that the X-ray emission is degenerate between two spectralmodels, namely point-like power-law emission and extended plasma emission inthe interstellar medium. This is similar to what has been observed in lowredshift galaxies. Using a simple spectral model where half of the emissioncomes from power-law sources and the other half from the extended hot halo wederive the X-ray luminosities of our galaxies. The soft X-ray luminosities ofour galaxies lie in the range 10^39-8x10^40, ergs/s. Dividing our galaxy sampleby the criteria U-B > 1, we find no evidence that our results for X-ray scalingrelations depend on optical color.

X-ray Emission in Non-AGN Galaxies at z ~ 1