3 MILLIMETER J = 1-0 HCO-OPHIUCHI( EMISSION FROM THE DIFFUSE CLOUD TOWARD ZETA)

Authors
LISZT HS LUCAS R
Citation
Hs. Liszt et R. Lucas, 3 MILLIMETER J = 1-0 HCO-OPHIUCHI( EMISSION FROM THE DIFFUSE CLOUD TOWARD ZETA), The Astrophysical journal, 431(2), 1994, pp. 120000131-120000134
Citations number
30
Categorie Soggetti
Astronomy & Astrophysics
Journal title
The Astrophysical journal → ACNP
ISSN journal
0004637X
Volume
431
Issue
2
Year of publication
1994
Part
2
Pages
120000131 - 120000134
Database
ISI
SICI code
0004-637X(1994)431:2<120000131:3MJ=1H>2.0.ZU;2-L
Abstract
In diffuse clouds, HCO+ is the immediate chemical antecedent of CO: we have detected 89 GHz emission from the J = 1-0 line of HCO+ toward ze ta Oph and at the CO peak 30' to the south. The column densities requi red to reproduce these weak lines (0.02 and 0.1 K) are very sensitive to the assumed number density and carbon depletion, providing a sensit ive test of chemical models.