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 Plus annual

Presents the access of premium content as premium feature

Premium Content

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 annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We study the frequency of Mg II absorption in the outer haloes of galaxies atz = 0.6 - 1.4 (with median z = 0.87), using new spectra obtained of tenbackground quasars with galaxy impact parameters of b < 100 kpc. The quasarsightlines were selected from the SDSS DR6 QSO catalog based on proximity togalaxies in the DEEP2 redshift survey. In addition to the 10 small impactsystems, we examine 40 additional galaxies at 100 < b < 500 kpc serendipitouslylocated in the same fields. We detect Mg II absorbers with equivalent width W_r= 0.15 A - 1.0 A, though not all absorbers correlate with DEEP galaxies. Wefind five unique absorbers within \Delta v = 500 km/s and b < 100 kpc of a DEEPgalaxy; this small sample contains both early and late type galaxies and has noobvious trends with star formation rate. No Mg II is detected more than 100 kpcfrom galaxies; inside this radius the covering fraction scales with impactparameter and galaxy luminosity in very similar fashion to samples studied atlower redshift. In all but one case, when Mg II is detected without aspectroscopically confirmed galaxy, there exists a plausible photometriccandidate which was excluded because of slit collision or apparent magnitude.We do not detect any strong absorbers with W_r > 1.0 A, consistent with othersamples of galaxy-selected Mg II systems. We speculate that Mg II systems with0.3 < W_r < 1.0 trace old relic material from galactic outflows and/or the haloassembly process, and that in contrast, systems with large W_r are more likelyto reflect the more recent star forming history of their associated galaxies.

Observations of Mg II Absorption Near z ~ 1 Galaxies Selected From The DEEP2 Redshift Survey