Abstract
view Abstract Citations (31) References (10) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Velocity-resolved Observations of Water in Comet Halley Larson, Harold P. ; Davis, D. Scott ; Mumma, Michael J. ; Weaver, Harold A. Abstract High-resolution (λ/Δλ ≈ 3×105) near-infrared observations of H2O emission from comet Halley were acquired at the time of maximum postperihelion geocentric Doppler shift. The observed widths and absolute positions of the H2O line profiles reveal characteristics of the molecular velocity field in the coma. These results support H2O outflow from a Sun-lit hemisphere or the entire nucleus, but not from a single, narrow jet emanating from the nucleus. The measured pre- and postperihelion outflow velocities were 0.9±0.2 and 1.4±0.2 km s-1, respectively. Publication: The Astrophysical Journal Pub Date: October 1986 DOI: 10.1086/184769 Bibcode: 1986ApJ...309L..95L Keywords: Astronomical Spectroscopy; Halley'S Comet; Infrared Spectra; Velocity Distribution; Water; Doppler Effect; Line Shape; Near Infrared Radiation; Astrophysics; COMETS; INFRARED: SPECTRA full text sources ADS |
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
