%0 Generic %1 morishita2022physical %A Morishita, Takahiro %A Stiavelli, Massimo %D 2022 %K library %T Physical characterization of F090W-dropout galaxies in the Webb's First Deep Field SMACS J0723.3-7323 %U http://arxiv.org/abs/2207.11671 %X This paper highlights initial photometric analyses of JWST NIRCam imaging data in the sightline of SMACS0723. We here aim to identify high-redshift galaxy candidates at $z>7$. We start our analysis with the cluster field, where the extant HST data are available for photometric calibration and additional constraints, and identify three F090W-dropout sources, whose redshifts were recently confirmed in an independent spectroscopic analysis to $z_\rm spec=7.663$, $7.665$, and $8.499$. We then extend our analysis to the parallel field and identify one additional F090W-dropout at photometric redshift of $z_phot.=10.0_-1.5^+0.9$. The NIRCam F150W images clearly resolve all sources and reveal their sub-galactic components that were unresolved in the previous F160W imaging. Our spectral energy distribution analysis reveals that those galaxies are characterized by young stellar populations with extreme H$\beta$ and OIII lines being captured in the F444W band and seen as color excess. We publish the best-fit templates and optical line fluxes of the four galaxies for future reference and spectroscopic follow-up planning.

@misc{morishita2022physical, abstract = {This paper highlights initial photometric analyses of JWST NIRCam imaging data in the sightline of SMACS0723. We here aim to identify high-redshift galaxy candidates at $z>7$. We start our analysis with the cluster field, where the extant HST data are available for photometric calibration and additional constraints, and identify three F090W-dropout sources, whose redshifts were recently confirmed in an independent spectroscopic analysis to $z_{\rm spec}=7.663$, $7.665$, and $8.499$. We then extend our analysis to the parallel field and identify one additional F090W-dropout at photometric redshift of $z_{\rm phot.}=10.0_{-1.5}^{+0.9}$. The NIRCam F150W images clearly resolve all sources and reveal their sub-galactic components that were unresolved in the previous F160W imaging. Our spectral energy distribution analysis reveals that those galaxies are characterized by young stellar populations with extreme H$\beta$ and [OIII] lines being captured in the F444W band and seen as color excess. We publish the best-fit templates and optical line fluxes of the four galaxies for future reference and spectroscopic follow-up planning.}, added-at = {2022-07-26T10:58:12.000+0200}, author = {Morishita, Takahiro and Stiavelli, Massimo}, biburl = {https://www.bibsonomy.org/bibtex/2c00282f242fd3d2430c047eda19995d5/gpkulkarni}, description = {Physical characterization of F090W-dropout galaxies in the Webb's First Deep Field SMACS J0723.3-7323}, interhash = {2dd9db969245da3eb75e3f1774916bd2}, intrahash = {c00282f242fd3d2430c047eda19995d5}, keywords = {library}, note = {cite arxiv:2207.11671Comment: Submitted to ApJ. Best-fit templates of our four galaxies will be published at https://github.com/mtakahiro}, timestamp = {2022-07-26T10:58:12.000+0200}, title = {Physical characterization of F090W-dropout galaxies in the Webb's First Deep Field SMACS J0723.3-7323}, url = {http://arxiv.org/abs/2207.11671}, year = 2022 }