2004ApJ...614..194W

Query : 2004ApJ...614..194W

2004ApJ...614..194W - Astrophys. J., 614, 194-202 (2004/October-2)

Star formation on the move.

WALSH A.J., MYERS P.C. and BURTON M.G.

Abstract (from CDS):

Recent models of star formation suggest that the mass of a star is largely determined by its history of motion through its natal molecular cloud. Such motions may be observable in the early stages of star formation. We have looked for the relative shifts of line-center velocity in low [13CO (1-0) and C18O (1-0)] and high [N2H+ (1-0)] density tracers toward a sample of 42 low-mass star-forming cores. Our results indicate that any motions of the high-density cores with respect to their low-density envelopes are very small (≲0.1 km/s) compared to the motions expected from models of ballistic movement. We therefore conclude that isolated cores do not generally move ballistically with respect to their surrounding envelopes.

Abstract Copyright: ∼

Journal keyword(s): ISM: Clouds - ISM: Kinematics and Dynamics - Stars: Formation

Nomenclature: Table 1: [LMG94] Per 4AN (Nos 4A1, 4A2, 4A3) added.

Simbad objects: 48

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Number of rows : 48
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 NGC 1333 OpC 03 29 09.2 +31 20 59           ~ 1575 1
2 [LMG94] Per 4A1 PoC 03 29 18.0 +31 28 01           ~ 1 0
3 [LMG94] Per 4A2 PoC 03 29 21.0 +31 23 01           ~ 1 0
4 JCMTSF J032925.4+312818 PoC 03 29 25.8 +31 28 20           ~ 7 0
5 IRAS 03267+3128 cor 03 29 51.82 +31 39 06.0           ~ 58 0
6 [LMG94] Per 6 PoC 03 30 14.9 +30 22 48           ~ 13 0
7 [LMG94] Per 7 PoC 03 32 45.1 +30 59 56           ~ 10 0
8 NAME [BM89] B5 DNe 03 47 38.3 +32 52 43           ~ 224 0
9 LDN 1471 DNe 03 48.0 +32 54           ~ 349 0
10 LDN 1389 MoC 04 04 38 +56 56.2           ~ 99 0
11 LDN 1489 DNe 04 04 47.5 +26 19 42           ~ 238 0
12 LDN 1400K DNe 04 10 48.6 +54 53 14           ~ 32 0
13 NAME [BM89] L1498 PoC 04 10 51.4 +25 09 58           ~ 187 0
14 LDN 1498 DNe 04 11.0 +24 58           ~ 306 0
15 NAME [BM89] L1495 PoC 04 14 08.2 +28 09 31           ~ 172 0
16 LDN 1495 DNe 04 18.1 +27 37           ~ 408 1
17 Barnard 217 DNe 04 27 46.5 +26 17 52           ~ 89 0
18 LDN 1524 DNe 04 27 57.7 +24 39 18           ~ 87 0
19 JCMTSF J043155.5+243254 PoC 04 31 55.9 +24 32 49           ~ 42 0
20 LDN 1521 DNe 04 33.1 +26 06           ~ 64 0
21 LDN 1536 DNe 04 33 24.6 +22 43 29           ~ 114 0
22 LDN 1527 DNe 04 39 53 +25 45.0           ~ 689 0
23 LDN 1534 DNe 04 41 46 +25 41.4           ~ 45 0
24 NAME [BM89] L1517B cor 04 55 18.8 +30 38 04           ~ 163 0
25 LDN 1512 MoC 05 04 09.7 +32 43 09           ~ 184 0
26 LDN 1544 DNe 05 04 16.6 +25 10 48           ~ 965 0
27 NAME [BM89] L1544 cor 05 04 22.5 +25 11 36           ~ 437 1
28 LDN 1552 DNe 05 17.7 +26 03           ~ 23 0
29 NAME [BM89] L1582A DNe 05 31 18.4 +12 30 31           ~ 33 0
30 Barnard 35 DNe 05 45.5 +09 03           ~ 65 0
31 BHR 53 MoC 09 28 47 -51 36.7           ~ 16 0
32 [B2001b] IRS 1 Y*O 12 01 36.53040 -65 08 51.9180           ~ 167 0
33 BHR 71 MoC 12 01 37 -65 08.8           ~ 163 0
34 DCld 303.7-14.8 DNe 13 05 24 -77 40.8           ~ 4 0
35 DCld 303.7-15.2 DNe 13 06 30 -78 02.4           ~ 3 0
36 Sz 58 Em* 13 06 57.4252298184 -77 23 41.593041672   17.89 16.01     K5 37 0
37 LDN 43E DNe 16 34 37.5 -15 47 01           ~ 19 0
38 LDN 663 DNe 19 36 55 +07 34.4           ~ 698 0
39 LDN 1155C DNe 20 43 18.1 +67 50 36           ~ 30 0
40 [LM99] L1155C-2 cor 20 43 22.1 +67 50 31           ~ 9 0
41 [LM99] L1155C1 cor 20 43 29.9 +67 52 42           ~ 10 0
42 RNO 129 Y*O 20 59 14.08512 +78 23 04.0020       15.30   G:e 50 1
43 LDN 1174 DNe 21 00 22.4 +68 12 53           ~ 66 0
44 LDN 1172A DNe 21 02 27.7 +67 54 08           ~ 24 0
45 LDN 1031B DNe 21 47 25.7 +47 32 09           ~ 22 0
46 LDN 1221 DNe 22 28 02.9 +69 01 13           ~ 51 0
47 LDN 1251C DNe 22 35 40.0 +75 18 06           ~ 22 1
48 LDN 1253 DNe 23 56 32 +58 31.7           ~ 56 0

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