AN UNUSUAL CASE OF HCN HYPERFINE ANOMALIES IN S-76E - PHYSICAL IMPLICATIONS

Authors
ZINCHENKO I FORSSTROM V MATTILA K
Citation
I. Zinchenko et al., AN UNUSUAL CASE OF HCN HYPERFINE ANOMALIES IN S-76E - PHYSICAL IMPLICATIONS, Astronomy and astrophysics, 275(1), 1993, pp. 9-12
Citations number
16
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Astronomy and astrophysics → ACNP
ISSN journal
00046361
Volume
275
Issue
1
Year of publication
1993
Pages
9 - 12
Database
ISI
SICI code
0004-6361(1993)275:1<9:AUCOHH>2.0.ZU;2-3
Abstract
The HCN J = 1 - 0 line emission in the region around the H2O maser sou rce S76E demonstrates unusual ratios of the intensities of the hfs com ponents: the F = 1 - 1 component is much stronger than the main F = 2 - 1 component and the other satellite component F = 0 - 1. The most pl ausible explanation of this anomaly is the shielding of the core emiss ion by a large amount of blue-shifted low density cold molecular gas o n the line of sight.