Solution to the conflict between the resolved and unresolved galaxy stellar mass estimation from the perspective of JWST
- Song, Jie
- Fang, GuanWen
- Lin, Zesen
- Gu, Yizhou
- Kong, Xu
DOIAbstract
By utilizing the spatially-resolved photometry of galaxies at $0.2<z<3.0$ in the CEERS field, we estimate the resolved and unresolved stellar mass via spectral energy distribution (SED) fitting to study the discrepancy between them. We first compare $M_{\ast}$ derived from photometry with and without the JWST wavelength coverage and find that $M_{\ast}$ can be overestimated by up to 0.2 dex when lacking rest-frame NIR data. The SED fitting process tends to overestimate both stellar age and dust attenuation in the absence of rest-frame NIR data, consequently leading to a larger observed mass-to-light ratio and hence an elevated $M_{\ast}$. With the inclusion of the JWST NIR photometry, we find no significant disparity between the resolved an...
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