Detection of new galaxy candidates at <i>z</i>  &amp;gt; 11 in the JADES field using <i>JWST</i> NIRCam

ABSTRACT We report the detection of six new galaxy candidates with photometric redshifts $z &amp;gt; 11$ within the James Webb Space Telescope (JWST) Advanced Deep Extragalactic Survey (JADES) Great Observatories Origins Deep Survey-South (GOODS-S) and GOODS-North (GOODS-N) fields. These new candidates are detected through meticulous analysis of NIRCam (Near-Infrared Camera) photometry in eight filters spanning a wavelength range of 0.8–5.0 $\mu$m. Photometric redshifts of these galaxy candidates are independently measured utilizing spectral energy distribution fitting techniques using eazy and bagpipes codes, followed by visual scrutiny. One of these galaxy candidates is located in the GOODS-S field, while the remaining five galaxies are located in GOODS-N field. Our analysis reveals that the stellar masses of these galaxies typically range from $\log M_{\ast }/{\rm M}_{\odot }$ = 7.75 to 8.75. Furthermore, these galaxies are typically young with their mass-weighted ages spanning from 80 to 240 Myr. Their specific star formation rates, quantified as $\log (\text{sSFR}/\text{Gyr})$, are measured to vary between ${\sim} 0.95$ and 1.46. These new galaxy candidates offer a robust sample for probing the physical properties of galaxies within the first few hundred Myr of the history of the Universe. We also analyse the relationship between star formation rate and stellar mass ($M_\ast$) within our sample. Continued investigation through spectroscopic analysis using JWST/Near-Infrared Spectrograph (NIRSpec) is needed to spectroscopically confirm these high-redshift galaxy candidates and investigate further into their physical properties. We plan to follow-up on these candidates with future NIRSpec observations.