Open Access

Table 5

Gas mass distribution within ALMA-IMF protoclusters, from parsec-size clouds to structures with typical sizes of 0.1 pc and finally to 2100 au cores.

Protocluster Spatial Number of
cloud name resolution within A1.3mm within A1.3mm extracted cores(3) within A1.3mm
[au] [Jy](1) [M](2) sources [#, %] [M] [%](4) [%] [%]
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
W43-MM1 2430 10.4 6200 57 56 (98%) 872 46% 14% 6.5%
W43-MM2 2540 2.9 1 700 43 38 (88%) 294 15% 17% 2.5%
G338.93 2080 3.0 890 51 51 (100%) 509 13% 57% 7.2%
G328.25 1 350 1.4 180 18 18 (100%) 69 7% 38% 2.7%
G337.92 1 460 5.1 720 38 37 (97%) 160 28% 22% 6.3%
G327.29 1 650 16.9 – 16.4 2 010 47 41 (87%) 497 41% 25% 9.7%

G351.77 1 540 10.3 – 10.2 800 28 26 (93%) 277 32% 35% 11%
G008.67 2250 3.7 – 2.2 500 22 21 (95%) 126 16% 25% 4.1%
W43-MM3 2690 2.5 – 1.9 1 100 35 34 (97%) 164 21% 15% 3.1%
W51-E 1 640 30.1 – 27.6 16000 58 39 (67%) 743 48% 5% 2.3%
G353.41 1 590 6.6 – 5.4 420 62 59 (95%) 132 17% 31% 5.3%

G010.62 2310 8.7 – 3.1 1 500 61 47 (77%) 181 22% 12% 2.7%
W51-IRS2 2560 22.8 – 16.9 9600 117 96 (82%) 825 47% 9% 4.0%
G012.80 2110 22.3 – 7.7 860 82 65 (79%) 277 18% 32% 6.0%
G333.60 2330 34.8 – 6.8 2300 118 66 (56%) 461 22% 20% 3.8%

Notes. (1)Flux recovered by the ALMA 12 m array at 1.3 mm and integrated over the 1.3 mm imaged area. In the case of Intermediate and Evolved protocluster clouds and G327.29, a second value, corrected for free-free contamination, is given by ignoring the 1.3 mm fluxes in areas where the free-free emission dominates (as indicated by the H41α image). (2)Mass recovered by the ALMA 12 m array computed from the total 1.3 mm fluxes corrected for free-free contamination (Col. (3), right value) and using Eq. (3) with and Tdust = 20 K.(3)Cores are sources extracted at 1.3 mm (Col. (5)), whose emission consists of thermal dust emission. The sources of Col. (5), which are not included in Col. (6) are candidate ionization peaks detected through their free-free emission. (4)Assuming the same temperature for all type of clouds when measuring their total cloud mass, the gas mass concentration from 1 pc to 0.1 pc cloud structures would be reduced by factors of 1.3 and 1.75 for Intermediate and Evolved clouds, respectively.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.