Observations of interstellar water vapor in outflow regions

Authors
Neufeld, DA Snell, RL Ashby, MLN Bergin, EA Chin, G Erickson, NR Goldsmith, PF Harwit, M Howe, JE Kleiner, SC Koch, DG Patten, BM Plume, R Schieder, R Stauffer, JR Tolls, V Wang, Z Winnewisser, G Zhang, YF Melnick, GJ
Citation
Da. Neufeld et al., Observations of interstellar water vapor in outflow regions, ASTROPHYS J, 539(2), 2000, pp. L107-L110
Citations number
33
Categorie Soggetti
Space Sciences
Journal title
ASTROPHYSICAL JOURNAL
ISSN journal
0004637X → ACNP
Volume
539
Issue
2
Year of publication
2000
Part
2
Pages
L107 - L110
Database
ISI
SICI code
0004-637X(20000820)539:2<L107:OOIWVI>2.0.ZU;2-A
Abstract
We have observed the 1(10)-->1(01) transition of interstellar water vapor n ear 557 GHz toward the three outflow sources NGC 2071, L1157, and NGC 1333 IRAS 4 using the Submillimeter Wave Astronomy Satellite. In each case, the observations reveal broad emission from water in the outflow accompanied by a narrow absorption feature at the velocity of the quiescent gas. Our esti mates of the average ortho-water abundance within the outflowing gas lie in the range (0.5-1.6) x 10(-6) relative to H-2.