2000ApJ...539L.119A

Query : 2000ApJ...539L.119A

2000ApJ...539L.119A - Astrophys. J., 539, L119-L122 (2000/August-3)

Water abundance and velocity structure in S140, ρ Oph A, and B335.

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

Abstract (from CDS):

We present Monte Carlo radiative transfer models for B335, S140, and ρ Ophiuchi A that simulate the emission line arising from the 557 GHz 110⟶101 ground-state transition of ortho-H216O. These models reproduce the line profiles with a combination of turbulent and macroscopic motions, and are consistent with gravitational infall in ρ Oph A. We cannot, however, discriminate infall from outflow for S140. Our models are consistent with ortho-H2O abundances relative to H2 of 2x10–8 and 4.5x10–9 in S140 and ρ Oph A, respectively, and an upper limit of 4x10–6 (3 σ) in B335, assuming the ratio ortho-H2/para-H2 = 0.1. We quantify the impact of dust continuum emission on the derived abundances.

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

Simbad objects: 9

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Number of rows : 9
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 rho Oph A Cloud MoC 16 26 26.4 -24 22 33           ~ 312 1
2 NAME VLA 1623-243 Y*O 16 26 26.42 -24 24 30.0           ~ 429 0
3 [SSG2006] MMS002 smm 16 26 26.50 -24 24 30.9           ~ 241 0
4 HGBS J162627.6-242359 cor 16 26 27.60 -24 23 55.0           ~ 75 0
5 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1
6 LDN 663 DNe 19 36 55 +07 34.4           ~ 698 0
7 SH 2-140 OpC 22 19 07.8 +63 17 07           ~ 668 2
8 IRAS 22176+6303 Y*O 22 19 18.23 +63 18 47.5           ~ 600 0
9 NAME SH 2-140 IRS 1 Y*O 22 19 18.277 +63 18 45.82           ~ 201 0

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