Table 8
Counterparts of the radio continuum sources detected in G14.2.
| Source | Dense gas | mm | IR | X–rays | Maser | Radio(a) | Object type(b) | Stage(c) | Catalog name | References | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Northern region G14.2–N | |||||||||||
| VLA-03 | ✓ | – | ✓ | ✓ | – | V | YSO† | U | Stage III | G014.2405-00.4991, CXO J181811.60-164830.9 | (1), (2) (3) |
| VLA-06 | – | – | ✓ | ✓ | – | U | YSO† | U | Stage III | CXO J181824.90-164901.1 | (1) |
| VLA-08 | ✓ | – | ✓ | ✓ | – | V | YSO† | U | Stage III | G014.2360-00.5146, CXO J181814.48-164911.6 | (1), (2) (3) |
| VLA-09(*) | ✓ | – | ✓ | ✓ | – | U | YSO | J | Stage II | [PW2016] 572, G014.2341-00.5067, CXO J181812.54-164904.6 | (1), (2), (3) |
| VLA-10 | – | – | ✓ | ✓ | – | nonthermal | YSO† | G | Stage III | CXO J181807.28-164916.8 | (1) |
| VLA-11(*) | ✓ | ✓ | ✓ | – | ✓ | flat | YSO | J | Stage 0/I | [OSC2016]N-4, N14, [PW2016] 579, G014.2300-00.5097 | (1), (2), (3), |
| (4), (8), (9), (10) | |||||||||||
| VLA-12 | ✓ | – | ✓ | ✓ | – | nonthermal | YSO† | U | Stage III | CXO J181806.99-164903.3 | (1), (3) |
| VLA-13(*) | ✓ | ✓ | ✓ | – | ✓ | nonthermal | YSO | J | Stage 0/I | [PW2016] 578, G014.2290-00.5102, [OSC2016] N-19, [BEP2016] MM1g, N12 | (1), (2), (3), (4), (5), (7), (8),(9), (10) |
| VLA-14(*) | ✓ | ✓ | ✓ | ✓ | nonthermal | YSO | J | Stage 0/I | [OSC2016] N-16, [BEP2016] Hub-N MM1, N24 [PW2016] 564, G014.2286-00.5088, | (1), (2), (3), (4), (5), (6), (10) | |
| VLA-15 | – | ✓ | ✓ | ✓ | – | nonthermal | YSO† | U | Stage III | [OSC2016] N-25, CXO J181814.95-164927.5 | (1), (4) |
| VLA-16(*) | ✓ | ✓ | ✓ | – | ✓ | U | YSO | J | Stage 0/I | [PW2016] 575, G014.2281-00.5105, N16 | (1), (2), (3) (7), (10) |
| VLA-21 | – | – | ✓ | – | – | U | YSO | J | Stage II | [PW2016] 404, G014.1996-00.4766 | (1), (2) |
| VLA-22 | ✓ | ✓ | ✓ | ✓ | – | flat | YSO | G | Stage 0/I | [OSC2016] N-2, G014.2156-00.5151, [PW2016] 563, CXO J181812.21-165017.2, N28 | (1), (2), 10) |
| VLA-24 | ✓ | ✓ | – | – | – | nonthermal | YSO† | – | – | [OSC2016] N-7, [BEP2016] MM2, | (3), (4), (5) |
| VLA-26 | – | – | ✓ | ✓ | – | nonthermal | YSO | G | Stage II | [PW2016] 709, G014.2379-00.5654 CXO J181825.96-165037.4 | (1), (2) |
| VLA-28 | ✓ | – | ✓ | – | – | nonthermal | YSO | J | Stage 0/I | [PW2016] 465, G014.1901-00.5044 | (1), (2), (3) |
| VLA-29 | ✓ | – | ✓ | ✓ | – | U | YSO† | U | Stage III | CXO J181812.33-165126.4 | (1), (3) |
| VLA-30 | – | – | ✓ | ✓ | – | U | YSO† | U | Stage III | G014.1750-00.5220, CXO J181808.88-165237.7 | (1), (2) |
| VLA-31 | – | – | ✓ | ✓ | – | nonthermal | YSO | G | Stage 0/I | [PW2016] 409, G014.1667-00.4990, CXO J181802.60-165245.9 | (1), (2) |
| VLA-32 | – | ✓ | ✓ | ✓ | – | V | YSO† | U | Stage III | [OSC2016] N-17, N7, G014.1642-00.5131, CXO J181805.66-165257.0 | (1), (2) (4), (10) |
| Southern region G14.2–S | |||||||||||
| VLA-34 | – | – | ✓ | ✓ | – | U | YSO† | U | Stage III | G014.1554-00.5541, CXO J181813.63-165435.1 | (1), (2) |
| VLA-35 | – | – | ✓ | – | – | thermal | YSO | J | Stage II | [PW2016] 407, G014.1327-00.5170 | (1), (2) |
| VLA-36 | – | – | ✓ | ✓ | – | V | YSO† | U | Stage III | CXO J181810.07-165508.0 | (1) |
| VLA-37 | ✓ | – | ✓ | ✓ | – | V | YSO† | U | Stage III | G014.1310-00.5609, CXO J181812.23-165602.8 | (1), (2) |
| VLA-38 | – | – | ✓ | – | – | nonthermal | YSO | J | Stage II | [PW2016] 377, G014.1008-00.5132 | (1), (2) |
| VLA-39 | – | – | ✓ | ✓ | – | U | YSO† | U | Stage III | CXO J181811.53-165627.1 | (1) |
| VLA-40 | ✓ | – | ✓ | – | – | flat | YSO | J | Stage II | [PW2016] 460 G014.1123-00.5449 | (1), (2), (3) |
| VLA-42(*) | ✓ | – | ✓ | – | – | nonthermal | YSO | J | A | [PW2016] 561, G014.1114-00.5711 | (1), (2) |
| VLA-43 | – | – | ✓ | – | – | U | YSO | J | Stage 0/I | [PW2016] 451, G014.0945-00.5518 | (1), (2) |
| VLA-44(*) | ✓ | ✓ | ✓ | – | – | nonthermal | YSO | J | Stage 0/I | [OSC2016] S-18, [BEP2016] MM4 [PW2016] 584, G014.1132-00.5745 | (1), (2), (3) (4),(5) |
| VLA-45† | ✓ | ✓ | – | – | – | thermal | YSO† | U | – | [OSC2016] S-3, S6 | (3), (4), (10) |
| VLA-46 | ✓ | – | ✓ | ✓ | – | V | YSO† | U | Stage III | G014.1074-00.5575, CXO J181808.70-165712.0 | (1), (2), (3) |
| VLA-47 | ✓ | – | ✓ | – | – | thermal | YSO | J | Stage 0/I | [PW2016] G014.1101-00.5626 | (1), (2) |
| VLA-48 | ✓ | ✓ | ✓ | ✓ | – | V | YSO† | U | – | [OSC2016] S-17, CXO J181810.98-165708.9 | (1), (3), (4) |
| VLA-49(*) | ✓ | ✓ | ✓ | – | – | thermal | YSO | J | Stage 0/I | [BEP2016] MM7a, S3, [PW2016] 594 G014.1126-00.5780 | (1), (2), (3), (5), (10) |
| VLA-50 | – | – | ✓ | – | – | nonthermal | YSO | J | Stage II | [PW2016] 400, G014.0948-00.5298 | (1), (2) |
| VLA-52 | – | – | ✓ | ✓ | – | U | YSO† | U | Stage III | CXO J181820.84-165720.7 | (1) |
| VLA-53(*) | ✓ | ✓ | – | – | – | nonthermal | YSO† | – | – | [OSC2016] S-2, [BEP2016] MM2b, S20 | (3), (4), (5), (10) |
| VLA-54(*) | ✓ | ✓ | ✓ | – | – | V | YSO | J | Stage 0/I | [BEP2016] MM5b, [PW2016] 587, S14 G014.1142-00.5743 | (1), (2), (3), (5), (10) |
| VLA-55(*) | ✓ | ✓ | ✓ | ✓ | thermal | YSO | J | Stage 0/I | [OSC2016] S-1, [BEP2016] MM5a, S8 [PW2016] 588, G014.1157--00.5737 | (1), (2), (3), (4), (5), (6), (10) | |
| VLA-56(*) | ✓ | – | ✓ | – | – | thermal | YSO | J | A | [PW2016] 599, G014.1147-00.5783 | (1), (2), (3) |
| VLA-57 | ✓ | ✓ | ✓ | ✓ | – | U | YSO† | U | – | [OSC2016] S-9, CXO J181809.15-165728.0 | (1), (3), (4) |
| VLA-58(*) | ✓ | ✓ | – | – | – | thermal | YSO† | J | – | [OSC2016] S-4, [BEP2016] MM2a | (3), (4), (5) |
| VLA-59 | ✓ | – | ✓ | ✓ | – | thermal | YSO† | U | Stage III | CXO J181812.03-165701.0 | (1), (3) |
| VLA-60 | ✓ | – | ✓ | ✓ | – | V | YSO† | U | Stage III | G014.1000-00.5634, CXO J181809.17-165746.3 | (1), (2), (3) |
| VLA-62 | ✓ | – | ✓ | – | – | thermal | YSO | J | Stage II | [PW2016] 475, G014.1056-00.5537 | (1), (2), (3) |
| VLA-64 | ✓ | – | ✓ | ✓ | – | nonthermal | YSO† | G | Stage III | G014.0893-00.5548, CXO J181805.90-165804.4 | (1), (2) (3) |
| VLA-65 | ✓ | ✓ | ✓ | ✓ | – | thermal | YSO† | U | Stage III | [OSC2016] S-13, CXO J181805.64-165812.6 | (1), (3), (4) |
Notes. Sources marked with (*) next to their names correspond to radio continuum sources located within the inner 0.4 pc region around the center of each hub. (a)Radio continuum emission classified as thermal, nonthermal, flat, variable (V) and unclassified (U). (b)Object type: YSO, young stellar object; YSO†, YSO candidates proposed in this work; J, compatible with radio jet; G, compatible with gyrosynchrotron emission. (c)Evolutionary stage classification (Povich et al. 2016): Stage 0/I = SED model with infalling envelope; Stage II = SED model with only circum-stellar disks; Stage III = X-ray sources with no mid-IR excess but detected as IR point sources; A = Ambiguous (no dominant SED model type).
References. (1) Povich et al. (2016); (2) Spitzer Science (2009); (3) Busquet et al. (2013); (4) Ohashi et al. (2016); (5) Busquet et al. (2016); (6) Wang et al. (2006); (7) Palagi et al. (1993); (8) Green et al. (2010); (9) Sugiyama et al. (2017); (10) Q. Zhang (priv. comm.).
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