Title

Water abundance and velocity structure in S140, rho Oph A, and B335

Publication Date

2000

Journal or Book Title

ASTROPHYSICAL JOURNAL

Abstract

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 2 × 10-8 and 4.5 × 10-9 in S140 and ρ Oph A, respectively, and an upper limit of 4 × 10-6 (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.

Comments

The published version is located at http://iopscience.iop.org/1538-4357/539/2/L119?fromSearchPage=true

Volume

539

Pages

L119-L122

Issue

2

This document is currently not available here.

Share

COinS