1995A&A...300..851D

Query : 1995A&A...300..851D

1995A&A...300..851D - Astronomy and Astrophysics, volume 300851-869 (1995/8-3)

Near-infrared imaging in H2 of molecular (CO) outflows from young stars.

DAVIS C.J. and EISLOEFFEL J.

Abstract (from CDS):

In an attempt to identify the molecular shocks associated with the acceleration of ambient gas by collimated outflows from young stars, we have imaged a number of known molecular (CO) outflows in H2 v=1-0 S(1) and wide-band K. H2 line emission is detected in all six sources: (o) In the L 1157, VLA 1623 and NGC 6334I outflows, bow-shaped H2 features are observed coincident with or just ahead of (downwind of) peaks in the CO outflow maps. (o) In NGC 2264G, as well as a compact group of H2 knots coincident with the blue-shifted CO peak, we see an extended H2 filament that traces the northern edge of the red-shifted CO flow. (o) In the L 1641N and Haro 4-255 molecular outflows we see a close correlation between H2 line emission features and peaks in the CO outflow maps. In each outflow system, the H2 probably results from shocks associated with the interaction of the flow with the ambient, molecular gas. A comparison of the H2 data with CO outflow maps strongly suggests that "prompt entrainment" near the head of a jet is the dominant mechanism for producing the CO outflows in at least some of these sources. We are also able to account for the ratios of observed radiated energy (derived from H2 v=1-0 S(1) flux measurements) to mechanical power in the CO outflows in at least half of the outflows with a very simple, strong, radiative shock model.

Abstract Copyright: ∼

Journal keyword(s): shock waves - ISM: clouds - ISM: jets and outflows - ISM: molecules - infrared: interstellar: lines - infrared: stars

Nomenclature: Table 1, Fig. 1: [DE95] LDN 1157 N N=3, [DE95] LDN 1157 AN N=18. Table 2, Fig. 4: [DE95] VLA 1623 A N=5 Table 3, Fig. 6: [DE95] NGC 6334I N N=5, [DE95] NGC 6334I A N=4. Table 4, Fig. 8: [DE95] NGC 2264G N N=6, [DE95] NGC 2264G AN N=26. Table 5, Fig. 10: [DE95] LDN 1641N N N=3, [DE95] LDN 1641N AN N=13. Fig. 12: [DE95] HARO 4-255 A N=8

Errata: erratum in 1996A&A.305.694

CDS comments: NGC 2264G = [MLS88] G, VLA N = [GCT94] VLA N, NGC 6334I (I = roman digit) = MFSW I, NGC 6334F = RCM F

Simbad objects: 130

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Number of rows : 130
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 HD 18881 * 03 03 31.9447272600 +38 24 36.075859488   7.12 7.14     A0 83 0
2 LDN 1448 DNe 03 22.5 +30 35           ~ 546 0
3 HH 12 HH 03 28 59.4 +31 20 11           ~ 119 1
4 NAME HH 7-11 FIR 03 29 03.9 +31 16 06           ~ 357 0
5 IRAS 03282+3035 cor 03 31 20.98 +30 45 30.1           ~ 186 0
6 IC 348 OpC 03 44 31.1 +32 10 02           ~ 1476 1
7 LDN 1551 DNe 04 31 30.0 +18 12 30           ~ 823 1
8 [DE95] LDN 1641N E PoC 05 36 17.5 -06 21 38           ~ 1 0
9 NAME LDN 1641 North HII 05 36 17.6 -06 22 10           ~ 252 0
10 [CTS93] N 12 Or* 05 36 18.8837862264 -06 22 04.236070548           M3 11 0
11 [DE95] LDN 1641N C PoC 05 36 19.1 -06 22 14           ~ 2 0
12 [DE95] LDN 1641N B PoC 05 36 19.3 -06 21 41           ~ 1 0
13 SMZ 14A1 PoC 05 36 21.3 -06 21 39           ~ 3 0
14 [DE95] LDN 1641N 2 * 05 36 22.2 -06 21 41           ~ 1 0
15 NAME HH 1-2 HH 05 36 22.8 -06 46 03           ~ 209 1
16 [DE95] LDN 1641N 3 * 05 36 23.0 -06 22 54           ~ 1 0
17 [DE95] LDN 1641N I PoC 05 36 30.9 -06 23 06           ~ 1 0
18 HH 43 HH 05 38 10.4 -07 09 25           ~ 100 0
19 NAME Haro 4-255 FIR * 05 39 18.1 -07 24 54           ~ 14 0
20 Haro 4-255 Or* 05 39 22.3402033872 -07 26 44.480192532   15 15.830   12.969 K0 111 0
21 NAME LDN 1641 S4 mul 05 40 48.8 -08 06 51           ~ 44 0
22 HH 91 HH 05 41 58.2 -01 13 37           ~ 27 1
23 NGC 2071 RNe 05 47 10 +00 18.0           ~ 661 1
24 HH 110 HH 05 51 24.929 +02 54 52.28           ~ 92 0
25 HH 111 HH 05 51 44.207 +02 48 33.87           ~ 418 0
26 NAME Mon I MoC 06 35 +10.1           ~ 268 0
27 [DE95] NGC 2264G A2 PoC 06 41 04.9 +09 55 50           ~ 2 0
28 [DE95] NGC 2264G A4 PoC 06 41 04.9 +09 55 57           ~ 1 0
29 [DE95] NGC 2264G A6 PoC 06 41 05.4 +09 55 55           ~ 1 0
30 [DE95] NGC 2264G B2 PoC 06 41 07.1 +09 56 06           ~ 1 0
31 [DE95] NGC 2264G B1 PoC 06 41 07.4 +09 56 14           ~ 1 0
32 Cl* NGC 2264 SBL 2382 Or* 06 41 09.3423902120 +09 56 08.100255722   20.36 17.77 16.15 14.47 K5 43 0
33 V* V610 Mon Or* 06 41 10.9515254160 +09 54 16.657067664 16.860 16.357 15.480 14.984 14.511 ~ 9 0
34 [GCT94] VLA 2 Rad 06 41 11.053 +09 55 59.23           ~ 7 1
35 NAME Mon OB1 G PoC 06 41 12 +09 55.6           ~ 108 0
36 NGC 2264 186 TT* 06 41 13.241880 +09 55 08.70528 18.15 17.19 15.61 14.64 13.51 M4e 33 0
37 NGC 2264 190 TT* 06 41 13.8102953952 +09 55 43.917566520 17.71 12.94 12.350 11.966 11.64 G0V 49 0
38 [DE95] NGC 2264G 5 * 06 41 15.8 +09 55 24           ~ 2 0
39 2MASS J06411810+0956358 * 06 41 18.1026307464 +09 56 35.831359248         13.53 ~ 10 0
40 [DE95] NGC 2264G C2 PoC 06 41 19.4 +18 45 57           ~ 2 0
41 NAME HH 46-47 HH 08 25 43.6 -51 00 36           ~ 216 2
42 V* IX UMa dS* 09 48 44.6446952064 +43 39 55.608399468 8.12 8.00 7.90 7.80 7.77 A2II 65 0
43 HD 136879 * 15 26 50.1895616208 -65 57 36.399922776   9.13 8.98     A0V 12 0
44 LDN 1686 DNe 16 25 56.3 -24 18 53           ~ 25 0
45 CRBR 2316.0-1626 Y*? 16 26 17.46816 -24 23 12.9552           ~ 23 0
46 GSS 30 Y*O 16 26 21.38160 -24 23 04.0524           ~ 223 1
47 JCMTSE J162622.3-242333 PoC 16 26 22 -24 23.6           ~ 4 0
48 GSS 32 TT* 16 26 24.0509462472 -24 24 48.095495928       17.81 15.58 K5-K6 115 1
49 [DE95] VLA 1623 E PoC 16 26 24.7 -24 24 23           ~ 5 0
50 NAME VLA 1623-243 Y*O 16 26 26.42 -24 24 30.0           ~ 429 0
51 [SSG2006] MMS002 smm 16 26 26.50 -24 24 30.9           ~ 241 0
52 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1
53 [DE95] VLA 1623 C PoC 16 28 19 -24 23.5           ~ 5 0
54 [DE95] NGC 6334I 5 * 17 20 50.7 -35 46 24           ~ 1 0
55 [DE95] NGC 6334I A PoC 17 20 51.6 -35 47 15           ~ 2 0
56 NGC 6334 HII 17 20 53 -36 07.9           ~ 740 0
57 [HG83] IRS-I-2 IR 17 20 53.1 -35 46 59           ~ 15 0
58 [DE95] NGC 6334I 1 * 17 20 53.2 -35 47 02           ~ 1 0
59 NAME NGC 6334-I Cl* 17 20 53.35 -35 47 01.5           ~ 373 0
60 CXOU J172053.4-354701 * 17 20 53.432 -35 47 02.26           ~ 23 1
61 SSTU J172053.43-354717.8 Y*O 17 20 53.434 -35 47 17.86           ~ 5 0
62 NAME NGC 6334F (C) HII 17 20 53.45 -35 47 02.6           ~ 244 1
63 [DE95] NGC 6334I B PoC 17 20 54.4 -35 46 46           ~ 2 0
64 [HTK2008] IRN I-3 * 17 20 54.61 -35 47 03.5           ~ 10 0
65 [DE95] NGC 6334I 3 * 17 20 54.7 -35 46 44           ~ 2 0
66 [DE95] NGC 6334I C PoC 17 20 55.2 -35 47 10           ~ 2 0
67 [DE95] NGC 6334I 2 * 17 20 56.0 -35 47 12           ~ 1 0
68 [DE95] LDN 1157 2 * 20 38 57.2840577168 +68 01 36.454004544           ~ 1 0
69 JCMTSE J203901.1+680304 IR 20 39 00.4 +68 03 14           ~ 19 0
70 DR 21 SFR 20 39 01.6 +42 19 38           O4.5 1121 0
71 JCMTSE J203901.9+680422 IR 20 39 01.9 +68 04 22           ~ 15 0
72 NAME LDN 1157-mm Y*O 20 39 06.2 +68 02 15           ~ 204 0
73 LDN 1157 DNe 20 39 06.4 +68 02 13           ~ 606 0
74 [DE95] LDN 1157 A8 PoC 20 39 07.5 +68 01 30           ~ 2 0
75 [DE95] LDN 1157 A7 PoC 20 39 08 +68 01.8           ~ 2 0
76 [DE95] LDN 1157 A2 PoC 20 39 09 +68 01.3           ~ 3 0
77 [DE95] LDN 1157 B2 out 20 39 09.3 +68 00 44           ~ 80 0
78 [DE95] LDN 1157 A3 PoC 20 39 09.5 +68 01 12           ~ 2 0
79 JCMTSF J203910.0+680123 PoC 20 39 09.9 +68 01 15           ~ 5 0
80 [DE95] LDN 1157 A4 PoC 20 39 11 +68 01.1           ~ 2 0
81 [DE95] LDN 1157 B1 out 20 39 11 +68 01.3           ~ 288 0
82 [DE95] LDN 1157 A6 PoC 20 39 11 +68 01.6           ~ 2 0
83 [DE95] LDN 1157 1 * 20 39 12.4392806184 +68 00 17.698034700           ~ 1 0
84 [DE95] LDN 1157 A5 PoC 20 39 12.5 +68 01 14           ~ 2 0
85 [DE95] LDN 1157 3 * 20 39 17.6 +68 04 02           ~ 1 0
86 HD 203856 * 21 23 35.5297279464 +40 01 07.023676800   7.33 7.21     A0V 85 0
87 NAME Cepheus A SFR 22 56 17.9 +62 01 49           ~ 760 2
88 [DE95] NGC 2264G A5 PoC ~ ~           ~ 1 0
89 [DE95] NGC 2264G F8 PoC ~ ~           ~ 1 0
90 [DE95] LDN 1641N H PoC ~ ~           ~ 1 0
91 [DE95] LDN 1641N J PoC ~ ~           ~ 1 0
92 [DE95] LDN 1641N K PoC ~ ~           ~ 1 0
93 [DE95] LDN 1641N D1 PoC ~ ~           ~ 1 0
94 [DE95] LDN 1641N D2 PoC ~ ~           ~ 1 0
95 [DE95] LDN 1641N F PoC ~ ~           ~ 1 0
96 [DE95] LDN 1641N G1 PoC ~ ~           ~ 1 0
97 [DE95] LDN 1641N G2 PoC ~ ~           ~ 1 0
98 [DE95] HARO 4-255 A PoC ~ ~           ~ 1 0
99 [DE95] HARO 4-255 B PoC ~ ~           ~ 1 0
100 [DE95] HARO 4-255 C PoC ~ ~           ~ 1 0
101 [DE95] HARO 4-255 D PoC ~ ~           ~ 1 0
102 [DE95] HARO 4-255 E PoC ~ ~           ~ 1 0
103 [DE95] HARO 4-255 F PoC ~ ~           ~ 1 0
104 [DE95] HARO 4-255 G PoC ~ ~           ~ 1 0
105 [DE95] HARO 4-255 H PoC ~ ~           ~ 1 0
106 [DE95] NGC 2264G F6 PoC ~ ~           ~ 1 0
107 [DE95] NGC 2264G F5 PoC ~ ~           ~ 2 0
108 [DE95] NGC 2264G F4 PoC ~ ~           ~ 1 0
109 [DE95] NGC 2264G F3 PoC ~ ~           ~ 2 0
110 [DE95] NGC 2264G F2 PoC ~ ~           ~ 2 0
111 [DE95] NGC 2264G F1 PoC ~ ~           ~ 2 0
112 [DE95] NGC 2264G E3 PoC ~ ~           ~ 1 0
113 [DE95] NGC 2264G E2 PoC ~ ~           ~ 1 0
114 [DE95] NGC 2264G E1 PoC ~ ~           ~ 1 0
115 [DE95] NGC 2264G D2 PoC ~ ~           ~ 1 0
116 [DE95] NGC 2264G D1 PoC ~ ~           ~ 1 0
117 [DE95] NGC 2264G C1 PoC ~ ~           ~ 2 0
118 [DE95] NGC 2264G A9 PoC ~ ~           ~ 1 0
119 [DE95] NGC 2264G A8 PoC ~ ~           ~ 1 0
120 [DE95] NGC 2264G A7 PoC ~ ~           ~ 2 0
121 [DE95] NGC 2264G F7 PoC ~ ~           ~ 1 0
122 [DE95] NGC 2264G A3 PoC ~ ~           ~ 2 0
123 [DE95] NGC 2264G A1 PoC ~ ~           ~ 2 0
124 [DE95] NGC 6334I D PoC ~ ~           ~ 1 0
125 [DE95] LDN 1157 D3 PoC ~ ~           ~ 2 0
126 [DE95] LDN 1157 D2 PoC ~ ~           ~ 1 0
127 [DE95] LDN 1157 C4 PoC ~ ~           ~ 2 0
128 [DE95] LDN 1157 C3 PoC ~ ~           ~ 1 0
129 [DE95] LDN 1157 C2 PoC ~ ~           ~ 4 0
130 [DE95] LDN 1157 A9 PoC ~ ~           ~ 1 0

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