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- W4376312405 abstract "Based on the DECaLS shear catalog, we study the scaling relations between halo mass($M_{rm h}$) and various proxies for SDSS central galaxies, including stellar mass($M_*$), stellar velocity dispersion($sigma_*$), abundance matching halo mass($M_{rm AM}$) and satellite velocity dispersion($sigma_{rm s}$), and their dependencies on galaxy and group properties. In general, they are all good proxies of $M_{rm h}$, and their scaling relations are consistent with previous studies. We find that the $M_{rm h}$-$M_*$ and $M_{rm h}$-$sigma_*$ relations depend strongly on group richness($N_{rm sat}$), while the $M_{rm h}$-$M_{rm AM}$ and $M_{rm h}$-$sigma_{rm s}$ relations are independent of it. Moreover, the dependence on star formation rate(SFR) is rather weak in the $M_{rm h}$-$sigma_*$ and $M_{rm h}$-$sigma_{rm s}$ relations, but very prominent in the other two. $sigma_{rm s}$ is thus the best proxy among them, and its scaling relation is in good agreement with hydro-dynamical simulations. However, estimating $sigma_{rm s}$ accurately for individual groups/clusters is challenging because of interlopers and the requirement for sufficient satellites. We construct new proxies by combining $M_*$, $sigma_*$, and $M_{rm AM}$, and find the proxy with 30% contribution from $M_{rm AM}$ and 70% from $sigma_*$ can minimize the dependence on $N_{rm sat}$ and SFR. We obtain the $M_{rm h}$-supermassive black hole(SMBH) mass relation via the SMBH scaling relation and find indications for rapid and linear growth phases for SMBH. We also find that correlations among $M_{rm h}$, $M_*$ and $sigma_*$ change with $M_*$, indicating that different processes drive the growth of galaxies and SMBH at different stages." @default.
- W4376312405 created "2023-05-13" @default.
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- W4376312405 date "2023-05-11" @default.
- W4376312405 modified "2023-09-28" @default.
- W4376312405 title "Halo mass-observable proxy scaling relations and their dependencies on galaxy and group properties" @default.
- W4376312405 doi "https://doi.org/10.48550/arxiv.2305.06803" @default.
- W4376312405 hasPublicationYear "2023" @default.
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