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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We present rest-frame UV and Ly-alpha images of spatially-resolved structuresaround five high-redshift radio-loud quasars obtained with the WFPC2 camera onthe Hubble Space Telescope. We find that all five quasars are extended and this"fuzz" contains ~5-40% of the total continuum flux and 15-65% of the Ly-alphaflux within a radius of about 1.5 arcsec. The rest-frame UV luminosities of thehosts are log lambda P_lambda = 11.9 to 12.5 solar luminosities (assuming nointernal dust extinction), comparable to the luminous radio galaxies at similarredshifts and a factor 10 higher than both radio-quiet field galaxies at z~2-3and the most UV-luminous low redshift starburst galaxies. The Ly-alphaluminosities of the hosts are (in the log) approximately 44.3-44.9 erg/s whichare also similar to the those of luminous high redshift radio galaxies andconsiderably larger than the Ly-alpha luminosities of high redshift fieldgalaxies. To generate the Ly-alpha luminosities of the hosts would requireroughly a few percent of the total observed ionizing luminosity of the quasar.We find good alignment between the extended Ly-alpha and the radio sources,strong evidence for jet-cloud interactions in two cases, again resembling radiogalaxies, and what is possibly the most luminous radio-UV synchrotron jet inone of the hosts at z=2.110.Comment: 36 pages (latex, aas macros), 3 figures (3 gif and 10 postscript  files), accepted for publication in the the Astrophysical Journal Supplement  Serie

HUBBLE SPACE TELESCOPE Imaging of the Host Galaxies of High‐Redshift Radio‐loud Quasars