%0 Generic %1 pallottini2022survey %A Pallottini, A. %A Ferrara, A. %A Gallerani, S. %A Behrens, C. %A Kohandel, M. %A Carniani, S. %A Vallini, L. %A Salvadori, S. %A Gelli, V. %A Sommovigo, L. %A D'Odorico, V. %A Di Mascia, F. %A Pizzati, E. %D 2022 %K library %T A survey of high-$z$ galaxies: SERRA simulations %U http://arxiv.org/abs/2201.02636 %X We introduce SERRA, a suite of zoom-in high-resolution ($10\,pc$) cosmological simulations including non-equilibrium chemistry and on-the-fly radiative transfer. The outputs are post-processed to derive galaxy UV+FIR continuum and emission line properties. Results are compared with available multi-wavelength data to constrain the physical properties (e.g., star formation rates, stellar/gas/dust mass, metallicity) of high-redshift $6 z 15$ galaxies. This flagship paper focuses on the $z=7.7$ sub-sample, including 207 galaxies with stellar mass $10^7 M_łesssim M_510^10M_ødot$, and specific star formation ranging from $sSFR 100\,Gyr^-1$ in young, low-mass galaxies to $\sim 10\,Gyr^-1$ for older, massive ones. At this redshift, SERRA galaxies are typically bursty, i.e. they are located above the Schmidt-Kennicutt relation by a factor $\kappa_s = 3.03^+4.9_-1.8$, consistent with recent findings for OIII and CII emitters at high-$z$. They also show relatively large $IRX = L_FIR/L_UV$ values as a result of their compact/clumpy morphology effectively blocking the stellar UV luminosity. Note that this conclusion might be affected by insufficient spatial resolution at the molecular cloud level. We confirm that early galaxies lie on the standard $CII-SFR$ relation; their observed $L_OIII/L_CII \simeq 1-10$ ratios are reproduced without the need of a top-heavy IMF and/or anomalous C/O abundances. OI line intensities are similar to local ones, making ALMA high-$z$ detections challenging but feasible ($6\,hr$ for a SFR of $50\,M_ødot\,yr^-1$).

@misc{pallottini2022survey, abstract = {We introduce SERRA, a suite of zoom-in high-resolution ($\sim 10\,\rm pc$) cosmological simulations including non-equilibrium chemistry and on-the-fly radiative transfer. The outputs are post-processed to derive galaxy UV+FIR continuum and emission line properties. Results are compared with available multi-wavelength data to constrain the physical properties (e.g., star formation rates, stellar/gas/dust mass, metallicity) of high-redshift $6 \lesssim z \lesssim 15$ galaxies. This flagship paper focuses on the $z=7.7$ sub-sample, including 207 galaxies with stellar mass $10^7 M_\odot \lesssim M_\star \lesssim 5\times 10^{10}M_\odot$, and specific star formation ranging from ${\rm sSFR} \sim 100\,{\rm Gyr}^{-1}$ in young, low-mass galaxies to $\sim 10\,{\rm Gyr}^{-1}$ for older, massive ones. At this redshift, SERRA galaxies are typically bursty, i.e. they are located above the Schmidt-Kennicutt relation by a factor $\kappa_s = 3.03^{+4.9}_{-1.8}$, consistent with recent findings for [OIII] and [CII] emitters at high-$z$. They also show relatively large ${\rm IRX} = L_{\rm FIR}/L_{\rm UV}$ values as a result of their compact/clumpy morphology effectively blocking the stellar UV luminosity. Note that this conclusion might be affected by insufficient spatial resolution at the molecular cloud level. We confirm that early galaxies lie on the standard $\rm [CII]-SFR$ relation; their observed $L_{\rm [OIII]}/L_{\rm [CII]} \simeq 1-10$ ratios are reproduced without the need of a top-heavy IMF and/or anomalous C/O abundances. [OI] line intensities are similar to local ones, making ALMA high-$z$ detections challenging but feasible ($\sim 6\,\rm hr$ for a SFR of $50\,M_\odot\,{\rm yr}^{-1}$).}, added-at = {2022-01-11T06:17:25.000+0100}, author = {Pallottini, A. and Ferrara, A. and Gallerani, S. and Behrens, C. and Kohandel, M. and Carniani, S. and Vallini, L. and Salvadori, S. and Gelli, V. and Sommovigo, L. and D'Odorico, V. and Di Mascia, F. and Pizzati, E.}, biburl = {https://www.bibsonomy.org/bibtex/2b2bb2c6ce643df004e584b98375f6ade/gpkulkarni}, description = {A survey of high-$z$ galaxies: SERRA simulations}, interhash = {9addf453359711286808d78c5a4710a1}, intrahash = {b2bb2c6ce643df004e584b98375f6ade}, keywords = {library}, note = {cite arxiv:2201.02636Comment: 21 pages, 13 figures, submitted to MNRAS}, timestamp = {2022-01-11T06:17:25.000+0100}, title = {A survey of high-$z$ galaxies: SERRA simulations}, url = {http://arxiv.org/abs/2201.02636}, year = 2022 }