Evolution of the outgassing of comet Hale-Bopp (C/1995 O1) from radio observations.
Science
; 275(5308): 1915-8, 1997 Mar 28.
Article
in En
| MEDLINE
| ID: mdl-9072964
ABSTRACT
Spectra obtained from ground-based radio telescopes show the progressive release of CO, CH3OH, HCN, H2O (from OH), H2S, CS, H2CO, CH3CN, and HNC as comet Hale-Bopp (C/1995 01) approached the sun from 6.9 to 1.4 astronomical units (AU). The more volatile species were relatively more abundant in the coma far from the sun, but there was no direct correlation between overabundance and volatility. Evidence for H2O sublimation from icy grains was seen beyond 3.5 AU from the sun. The change from a CO-driven coma to an H2O-driven coma occurred at about 3 AU. The gas outflow velocity and temperature increased as Hale-Bopp approached the sun.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Meteoroids
Language:
En
Journal:
Science
Year:
1997
Document type:
Article
Affiliation country:
France
Publication country:
EEUU
/
ESTADOS UNIDOS
/
ESTADOS UNIDOS DA AMERICA
/
EUA
/
UNITED STATES
/
UNITED STATES OF AMERICA
/
US
/
USA