Bright z~9 Galaxies in Parallel: The Bright End of the Rest-UV Luminosity Function from HST Parallel Programs

Understand

The abundance of bright galaxies at z>8 can provide key constraints on models of galaxy formation and evolution, as the predicted abundance varies greatly when different physical prescriptions for gas cooling and star formation are implemented.

• We present the results of a search for bright z=9-10 galaxies selected from pure-parallel Hubble Space Telescope imaging programs.
• We include 132 fields observed as part of the Brightest of Reionizing Galaxies survey, the Hubble Infrared Pure Parallel Imaging Extragalactic Survey, and the WFC3 Infrared Spectroscopic Parallel survey.
• These observations cover a total of 620 sq.