2000ApJ...539L.115A

Query : 2000ApJ...539L.115A

2000ApJ...539L.115A - Astrophys. J., 539, L115-L118 (2000/August-3)

An analysis of water line profiles in star formation regions observed by the submillimeter wave astronomy satellite.

ASHBY M.L.N., BERGIN E.A., PLUME R., CARPENTER J.M., NEUFELD D.A., CHIN G., ERICKSON N.R., GOLDSMITH P.F., HARWIT M., HOWE J.E., KLEINER S.C., KOCH D.G., PATTEN B.M., SCHIEDER R., SNELL R.L., STAUFFER J.R., TOLLS V., WANG Z., WINNEWISSER G., ZHANG Y.F. and MELNICK G.J.

Abstract (from CDS):

We present spectral line profiles for the 557 GHz 110⟶101 ground-state rotational transition of ortho-H216O for 18 Galactic star formation regions observed by the Submillimeter Wave Astronomy Satellite. Water is unambiguously detected in every source. The line profiles exhibit a wide variety of shapes, including single-peaked spectra and self-reversed profiles. We interpret these profiles using a Monte Carlo code to model the radiative transport. The observed variations in the line profiles can be explained by variations in the relative strengths of the bulk flow and small-scale turbulent motions within the clouds. Bulk flow (infall, outflow) must be present in some cloud cores, and in certain cases this bulk flow dominates the turbulent motions.

Abstract Copyright: ∼

Journal keyword(s): ISM: Clouds - ISM: Molecules - Radio Lines: ISM - Stars: Formation

Simbad objects: 23

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Number of rows : 23
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 NAME W 3 OH HII 02 27 04.1 +61 52 22           ~ 1064 2
2 NGC 1333 OpC 03 29 09.2 +31 20 59           ~ 1575 1
3 [JCC87] IRAS 4A Y*O 03 29 10.49 +31 13 30.8           ~ 770 1
4 [JCC87] IRAS 4 FIR 03 29 10.9 +31 13 26           ~ 489 0
5 [JCC87] IRAS 4B Y*O 03 29 12.058 +31 13 02.05           ~ 625 0
6 NAME OMC-1 MoC 05 35 14 -05 22.4           ~ 1249 2
7 NAME Orion-KL SFR 05 35 14.16 -05 22 21.5           ~ 2421 1
8 NGC 2024 Cl* 05 41 43 -01 50.5           ~ 1198 1
9 NGC 2071 RNe 05 47 10 +00 18.0           ~ 661 1
10 NGC 2264 OpC 06 40 53.7 +09 52 32           ~ 1876 0
11 RCW 36 HII 08 59 00.9 -43 44 10     15.20     ~ 161 0
12 GAL 267.95-01.07 HII 08 59 04.9 -47 31 14           ~ 8 0
13 GAL 268.4-00.9 HII 09 01 54.3 -47 43 59           ~ 55 1
14 GAL 291.3-00.7 HII 11 11 52.9 -61 18 55           ~ 10 0
15 GAL 322.2+00.6 MoC 15 18 40 -56 38.9           ~ 8 0
16 NAME rho Oph A Cloud MoC 16 26 26.4 -24 22 33           ~ 312 1
17 NAME NGC 6334-I Cl* 17 20 53.35 -35 47 01.5           ~ 373 0
18 NAME M 17 SW SFR 18 20 23.1 -16 11 43           ~ 281 0
19 DR 21 SFR 20 39 01.6 +42 19 38           O4.5 1121 0
20 SH 2-140 OpC 22 19 07.8 +63 17 07           ~ 668 2
21 IRAS 22176+6303 Y*O 22 19 18.23 +63 18 47.5           ~ 600 0
22 NAME Cepheus A SFR 22 56 17.9 +62 01 49           ~ 760 2
23 NGC 7538 OpC 23 13 37 +61 30.0           ~ 920 1

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