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 present the properties of Ly Alpha emitters (LAEs) at z = 5.7 in theSubaru Deep Field. A photometric sample of 89 LAE candidates is constructedfrom narrow-band (NB816) data down to NB816 = 26.0 (AB) in a continuous 725arcmin^2 area. Spectra of 39 objects satisfying the photometric selectioncriteria for LAEs were obtained with Subaru and Keck II Telescopes, among which28 were confirmed LAEs, one was a nearby galaxy, and eight were unclassified.We also obtained spectra of another 24 NB816-excess objects in the field,identifying six additional LAEs. We find that the Ly Alpha luminosity functionderived from the photometric sample is reproduced well by a Schechter functionwith L* = (7.9+3.0-2.2) x 10^42 erg/s and phi* = (6.3+3.0-2.0) x 10^-4 Mpc^-3for alpha = -1.5 (fixed) over the whole luminosity range of L ~= 3x10^42 -3x10^43 erg/s. We then measure rest-frame Ly Alpha equivalent widths (EWs) forthe confirmed LAEs, to find that the median among the 28 objects satisfying thephotometric selection criteria is W_0^i = 233 A. We infer that 30% - 40% ofLAEs at z=5.7 exceed W_0^i = 240 A. These large-EW objects probably cannot beaccounted for by ordinary star-forming populations with a Salpeter IMF. We alsofind that LAEs with fainter far-UV luminosities have larger EWs. Finally, wederive the far-UV luminosity function of LAEs down to M_UV ~= -19.6 using thephotometric sample, and compare it with that of Lyman-break galaxies (LBGs). Wefind that as high as about 80% of LBGs at z ~ 6 have W_0^i >= 100 A, in sharpcontrast to lower-z counterparts.

Lyα Emitters at z = 5.7 in the Subaru Deep Field