Table 3.
Mass of the Virgo cluster in 1014 M⊙ at R500 (top) and at Rvir (bottom).
| Virgo masses at R500 (1014 M⊙) | |||||
|---|---|---|---|---|---|
| M3D, 500 = 3.36 | |||||
| MHE (Hydrostatic mas) | |||||
| Sim-derived | Fit | + Pnth | + Pnth+fit | ||
| 3D 81923 | 5.76 | 5.48 | 5.95 | 5.59 | |
| Sim. | 3D 20483 | 5.66 | 5.26 | 5.84 | 5.36 |
| Fil | 9.46 | 7.90 | – | – | |
| Filx | 12.45 | 8.58 | – | – | |
| Fily | 14.76 | 11.79 | – | – | |
| Cen | 7.51 | 7.84 | – | – | |
| Obs. | 0.83 ± 0.01 (from X-rays using clmass model; Simionescu et al. 2017) | ||||
| masses at Rvir (1014 M⊙) | |||||
| Sim. | M3D, vir = 6.31 | ||||
| 6 (de Vaucouleurs 1960) | |||||
| 6.3 ± 2.7–8.9 (Karachentsev & Nasonova 2010) | |||||
| Obs. | 8.0 ± 2.3 (Karachentsev et al. 2014) | ||||
| 7 (Tully 2015, updated values as given in EDD database (a)) | |||||
| 6.3 ± 0.9 (Kashibadze et al. 2020) | |||||
Notes. In the first row of each table, we give the total of the Virgo replica (i.e., the sum of DM and baryons in a sphere of the given radius). In the upper table, in the simulation (Sim.) sub-panel, we present the hydrostatic mass derived from 3D profiles in the high- (3D 81923) and low- (3D 20483) resolution simulations and from projections (Fil, Filx, Fily, and Cen). We present the hydrostatic mass computed from simulation-derived profiles (Sim-derived) and from fitted electron density and pressure profiles (Fit). For the 3D profiles, we also show the hydrostatic mass derived when adding non-thermal pressure while fitting the profiles, including the α parameter (+Pnth+fit) or not (+Pnth). In the lower sub-panel (Obs.) of each table, we present the observed masses of the Virgo cluster estimated from X-rays at R500 (top) and from galaxies velocity dispersion at Rvir (bottom).
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