Abstract
view Abstract Citations (16) References (11) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Brightness Distribution of OH around Comet Halley de Pater, I. ; Palmer, P. ; Snyder, L. E. Abstract The first successful VLA observations of OH emission from any comet have been made for comet Halley. In 1985 November, 120 arcsec and 60 arcsec resolution images of the brightness distribution of the 1667 MHz line were obtained. The 120 arcsec image shows that the peak of the OH emission is displaced 40 arcsec to the west and 80 arcsec to the south. The 60 arcsec image shows that the emission is concentrated in 'clumps', which surround a 'hole' in the OH emission. The hole may be the first direct observation of OH maser quenching in the inner cometary coma. The clumps of OH emission can best be explained by bow shock excitation or by large ice fragments broken off the cometary nucleus. Publication: The Astrophysical Journal Pub Date: May 1986 DOI: 10.1086/184665 Bibcode: 1986ApJ...304L..33D Keywords: Astronomical Spectroscopy; Brightness Distribution; Halley'S Comet; Hydroxyl Emission; Astronomical Maps; Bow Waves; Comet Heads; Interstellar Masers; Shock Waves; COMETS; HALLEY; BRIGHTNESS; DISTRIBUTION; HYDROXYL RADICAL; EMISSIONS; EARTH-BASED OBSERVATIONS; COMAE; BOW SHOCK; ICE; FRAGMENTS; OUTGASSING; Astrophysics; Comets; COMETS; MOLECULAR PROCESSES full text sources ADS |
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