2018ApJS..235...31Y

Query : 2018ApJS..235...31Y

2018ApJS..235...31Y - Astrophys. J., Suppl. Ser., 235, 31-31 (2018/April-0)

Inflow motions associated with high-mass protostellar objects.

YOO H., KIM K.-T., CHO J., CHOI M., WU J., EVANS N.J. and ZIURYS L.M.

Abstract (from CDS):

We performed a molecular line survey of 82 high-mass protostellar objects in a search for inflow signatures associated with high-mass star formation. Using the H13CO+ (1-0) line as an optically thin tracer, we detected a statistically significant excess of blue asymmetric line profiles in the HCO+ (1-0) transition, but nonsignificant excesses in the HCO+ (3-2) and H2CO (212-111) transitions. The negative blue excess for the HCN (3-2) transition suggests that the line profiles are affected by dynamics other than inflow motion. The HCO+ (1-0) transition thus seems to be the suitable tracer of inflow motions in high-mass star-forming regions, as previously suggested. We found 27 inflow candidates that have at least 1 blue asymmetric profile and no red asymmetric profile, and derived the inflow velocities to be 0.23-2.00 km s–1 for 20 of them using a simple two-layer radiative transfer model. Our sample is divided into two groups in different evolutionary stages. The blue excess of the group in relatively earlier evolutionary stages was estimated to be slightly higher than that of the other in the HCO+ (1-0) transition.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): ISM: kinematics and dynamics - ISM: molecules - radio lines: ISM - stars: formation

Simbad objects: 87

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Number of rows : 87
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 IRAS 00117+6412 HII 00 14 26.61 +64 28 30.3           ~ 40 0
2 IRAS 00420+5530 Y*? 00 44 57.31 +55 47 18.1           ~ 61 0
3 IRAS 04579+4703 Y*O 05 01 39.661 +47 07 21.92           ~ 51 0
4 IRAS 05137+3919 Cld 05 17 13.3 +39 22 14           ~ 75 0
5 IRAS 05168+3634 mul 05 20 16.2 +36 37 21           ~ 48 0
6 GAL 174.20-00.08 Cld 05 30 45.9 +33 47 56           ~ 210 2
7 NGC 1985 RNe 05 37 47.8 +31 59 24           ~ 145 2
8 IRAS 05358+3543 Y*O 05 39 09.92 +35 45 17.2           ~ 171 0
9 IRAS 05373+2349 Y*O 05 40 24.2280641304 +23 50 54.705306336           ~ 68 1
10 Mol 12 Rad 05 40 24.4 +23 50 54           ~ 50 0
11 IRAS 05391-0152 HII 05 41 37 -01 50.7           ~ 20 0
12 IRAS 05393-0156 HII 05 41 45.9 -01 54 32           ~ 38 0
13 IRAS 05490+2658 Y*O 05 52 12.9 +26 59 33           ~ 51 0
14 GAL 192.16-03.82 HII 05 58 13.4 +16 32 00           ~ 145 1
15 NAME Mon R2 HII 06 07 47.58 -06 22 42.6           ~ 789 2
16 RAFGL 6366S HII 06 08 41.0 +21 31 01           ~ 95 0
17 IRAS 06061+2151 SFR 06 09 07.8 +21 50 39           ~ 87 0
18 NGC 2183 RNe 06 10 46.75 -06 12 44.9           ~ 84 1
19 NAME GGD 12-15 OpC 06 10 48.0 -06 13 15           ~ 159 1
20 RAFGL 890S MIR 06 10 50.60928 -06 11 51.2772           ~ 77 1
21 RAFGL 5186 HII 06 13 16.34 +15 22 42.2           ~ 29 1
22 IRAS 06105+1756 HII 06 13 28.33753 +17 55 33.0170           ~ 30 0
23 IRAS 06382+0939 Y*O 06 41 02.81160 +09 36 16.1712         19.89 ~ 93 0
24 IRAS 06584-0852 Y*O 07 00 50.94192 -08 56 30.1812           ~ 37 0
25 RCW 7 HII 07 32 09.59 -16 58 12.3           ~ 56 0
26 IRAS 07299-1651 Y*O 07 32 09.7800 -16 58 12.800           ~ 85 0
27 IRAS 07427-2400 HII 07 44 51.997 -24 07 42.11           ~ 78 0
28 GAL 359.977+00.168 Y*O 17 44 53.4 -28 52 20           ~ 24 0
29 IRAS 17450-2742 IR 17 48 10 -27 43.2           ~ 17 0
30 IRAS 17504-2519 Y*O 17 53 33.7425042749 -25 19 50.366208103           ~ 13 0
31 IRAS 17527-2439 HII 17 55 49.1 -24 40 20           ~ 18 0
32 IRAS 18014-2428 IR 18 04 29.6 -24 28 47           ~ 15 0
33 RAFGL 2059 Y*O 18 04 53.1586569336 -24 26 41.642012796 19.905 21.910 18.914   14.078 ~ 146 0
34 IRAS 18024-2119 IR 18 05 25.4 -21 19 41           ~ 17 0
35 GAL 012.89+00.49 HII 18 11 51.3 -17 31 29           ~ 217 0
36 IRAS 18134-1942 HII 18 16 22.1327 -19 41 27.219           ~ 72 0
37 IRAS 18144-1723 IR 18 17 24.4 -17 22 13           ~ 35 0
38 IRAS 18151-1208 Y*O 18 17 58.1254 -12 07 24.893           ~ 114 0
39 IRAS 18159-1550 HII 18 18 47.30 -15 48 57.9           ~ 27 0
40 GAL 014.33-00.64 HII 18 18 53.5 -16 47 39           ~ 75 0
41 AGAL G014.891-00.404 Y*O 18 19 07.4495 -16 11 34.047           ~ 42 0
42 GAL 019.36-00.02 HII 18 26 24.3 -12 03 47           ~ 39 0
43 IRAS 18256-0742 IR 18 28 20.5 -07 40 22           ~ 14 0
44 IRAS 18258-0737 HII 18 28 34.1 -07 35 31           ~ 17 0
45 RAFGL 7009S HII 18 34 20.911 -05 59 42.23           ~ 231 0
46 IRAS 18317-0513 HII 18 34 25.62000 -05 10 50.3400           ~ 32 0
47 IRAS 18360-0537 HII 18 38 40.3 -05 35 06           ~ 27 0
48 GAL 026.60-00.02 HII 18 39 55.9 -05 38 45           ~ 34 1
49 IRAS 18396-0431 Rad 18 42 18.8 -04 28 37           ~ 14 0
50 IRAS 18488+0000 IR 18 51 24.8 +00 04 19           ~ 32 0
51 GAL 034.4+00.23 HII 18 53 17.4 +01 24 55           ~ 93 1
52 RAFGL 5542 Y*O 18 53 37.88832 +01 50 30.5844           ~ 78 0
53 [ERG2015] 6375 smm 18 55 16.778 +03 05 07.47           ~ 30 0
54 IRAS 18532+0047 Rad 18 55 50.6 +00 51 22           ~ 18 0
55 IRAS 18565+0349 Rad 18 59 03.4 +03 53 22           ~ 16 0
56 IRAS 18566+0408 Y*O 18 59 09.95520 +04 12 15.6240           ~ 143 0
57 AGAL G040.121+01.500 HII 18 59 14 +07 04.9   13.60 12.74     ~ 35 0
58 IRAS 19045+0518 Y*O 19 06 59.71488 +05 22 55.3152           ~ 16 0
59 IRAS 19088+0902 Rad 19 11 15.9 +09 07 27           ~ 22 0
60 IRAS 19282+1814 HII 19 30 28.1 +18 20 53           ~ 38 0
61 IRAS 19368+2239 HII 19 38 57.0 +22 46 27           ~ 21 0
62 IRAS 20050+2720 Y*O 20 07 06.549 +27 28 49.10           ~ 107 0
63 IRAS 20056+3350 Mas 20 07 31.5 +33 59 39           ~ 30 0
64 IRAS 20062+3550 HII 20 08 09.8 +35 59 20           ~ 21 0
65 IRAS 20106+3545 IR 20 12 31.3 +35 54 46           ~ 17 0
66 IRAS 20126+4104 Y*O 20 14 25.8816769656 +41 13 36.879427236           B2.5-B0.5 469 0
67 LBN 077.61+01.59 HII 20 20 39.3 +39 37 52           ~ 80 0
68 IRAS 20220+3728 Y*O 20 23 55.22 +37 38 12.3           ~ 50 3
69 IRAS 20227+4154 HII 20 24 31.4 +42 04 17           ~ 32 0
70 IRAS 20278+3521 IR 20 29 46.8321719328 +35 31 42.045300408           ~ 18 0
71 IRAS 20286+4105 HII 20 30 29.94 +41 15 50.8           ~ 57 1
72 IRAS 20333+4102 Cld 20 35 09.5 +41 13 18           ~ 30 0
73 IRAS 21078+5211 HII 21 09 31.03 +52 24 16.1           ~ 65 0
74 [BGE2002] BIMA 2 Y*O 21 40 42.36 +58 16 09.7           ~ 123 0
75 IRAS 21519+5613 HII 21 53 38.8 +56 27 53           ~ 40 0
76 LBN 102.79-00.92 HII 22 19 09.0 +56 04 45           ~ 109 0
77 IRAS 22172+5549 Y*O 22 19 09.14787 +56 05 00.0380           ~ 105 0
78 LDN 1204A HII 22 21 26.68 +63 51 38.2           ~ 120 0
79 IRAS 22267+6244 HII 22 28 29.3 +62 59 44           ~ 30 0
80 IRAS 22272+6358A Cld 22 28 52.2 +64 13 43           ~ 53 0
81 SH 2-138 HII 22 32 45.7 +58 28 20           ~ 115 2
82 IRAS 22506+5944 Y*O 22 52 38.09760 +60 01 01.1928           ~ 60 0
83 IRAS 23026+5948 IR 23 04 45.4557529824 +60 04 37.582742172           ~ 24 0
84 SH 2-159 Y*O 23 15 31.2384366062 +61 07 10.181362705           ~ 188 1
85 IRAS 23140+6121 IR 23 16 11.7 +61 37 45           ~ 35 0
86 IRAS 23314+6033 HII 23 33 43.8650890512 +60 50 26.959478136           ~ 31 0
87 IRAS 23545+6508 * 23 57 05.2 +65 25 11           B 52 0

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