  We report the discovery of four galaxy candidates observed 450 - 600 Myr
after the Big Bang with photometric redshifts between z ~ 8.3 - 10.2 measured
using the JWST NIRCam imaging of the galaxy cluster WHL0137-08 observed in 8
filters spanning 0.8-5.0 micron, plus 9 Hubble filters spanning 0.4-1.7 micron.
One candidate is gravitationally lensed with a magnification of ~8, while the
other three are located in a nearby NIRCam module with expected magnifications
of <~ 1.1. Using SED fitting, we estimate the stellar masses of these galaxies
are typically in the range log M*/Msun = 8.3 - 8.7. All appear young with
mass-weighted ages < 240 Myr, low dust content A_V < 0.15 mag, and specific
star formation rates sSFR ~0.25 - 10 /Gyr for most. One z ~ 9 candidate is
consistent with an age < 5 Myr and a sSFR ~10 /Gyr, as inferred from a strong
F444W excess, implying [OIII]+H-beta rest-frame equivalent width ~2000
Angstrom, although an older z ~ 10 object is also allowed. Another z ~ 9
candidate is lensed into an arc 2.4 arcsec long with a magnification of ~8.
This arc is the most spatially-resolved galaxy at z ~ 9 known to date,
revealing structures ~30 pc across. Follow-up spectroscopy of WHL0137-08 with
JWST/NIRSpec will be useful to spectroscopically confirm these high-redshift
galaxy candidates and to study their physical properties in more detail.
