THE STUDY OF COMETS, PAST 2 (NASA) 557 p KP $2.25; SOD HC $11.25 per set CSCL 03B NASA SP-393 N76-21075 THEU N76-21097 Unclas H1/90 23628 THE STUDY OF COMETS Part 2 A conference held at GODDARD SPACE FLIGHT CENTER Greenbelt, Maryland October 28-November 1, 1974 ^ NATIONAL AERONAUTICS AND SPACE ADMINISTRATION https://ntrs.nasa.gov/search.jsp?R=19760013987 2018-05-21T10:46:57+00:00Z NASA SP-393 THE STUDY OF COMETS Part 2 The Proceedings of IAU Colloquium No. 25, Co-Sponsored by COSPAR, and held at Goddard Space Flight Center, Greenbelt, Maryland, October 28-November 1, 1974 Edited by: B. Donn, Goddard Svace Flight Center M, Mumma, Goddard Space Flight Center W. Jackson, Howard University M. A'Hearn, University of Maryland R. Harrington, U.S. Naval Observatory Scientific and Technical Information Office 1976 NATIONAL AERONAUTICS AND SPACE ADMINISTRATION Washington, D.C. For sale by the Superintendent of Documents, U.S. Government Printing Office, Washington, D.C. 20402 CONTENTS Page Introduction Bertram Donn iii Participants of the IAU Colloquim No. 25 v PART I Photometry of the Cometary Atmosphere: A Review V. Vanysek 1 Photoelectric Photometry of Comet Kohoutek (1973f) Lubos Kohoutek 50 Narrow Band Photometry of Comet Kohoutek Larry W. Brown 70 Photoelectric Polarimetry of the Tail of Comet Ikey-Seki (1965 VIII) - J. L. Weinberg and D. E. Beeson 92 Isophotometry of Comet Tago-Sato-Kosaka C. K. Kumar and Rita J. Southall 121 Polarimetric Observations of Comet Kohoutek" J. Michalsky, Jr 123 Movie of Comet Kohoutek (1973f) as Observed Near Minimum Elongation by the HAO Coronagraph Aboard Skylab E. Hildner, J. T. Gosling, R. M. MacQueen, R. H. Munro, A. I. Poland, and C. L. Ross 124 Comet Data Collections H. L. Giclas 127 Review of Cometary Spectra G. H. Herbig 136 xv CONTENTS (Continued) Page Spectroscopic Observations of Comet Kohoutek (1973f) Lubos Kohoutek and Jurgen Rahe 159 High Resolution Scan of Comet Kohoutek in the Vicinity of 5015A, 5890A, and 6563A L. J. Lanzerotti, M. F. Bobbins, N. H. Tolk, and S. H. Neff 182 Spectroscopic Observation of Comet Kohoutek (1973f) - II Piero Benvenuti 184 H2O + Ions in Comets: Comet Kohoutek (1973f) and Comet Bradfield (1974b) Peter Wehinger and Susan Wyckoff 199 Pre- and Post-Perihelion Spectroscopic Observations of Comet Kohoutek (1973f) S. Wyckoff and P. Wehinger 206 Near-Infrared Spectra of Comets Bennett and Kohoutek A. E. Potter, T. Morgan, B. Ulrich, and T. Barnes 213 Observations of Comet Kohoutek (1973f) with a Ground-Based Fabry-Perot Spectrometer D. Huppler, R. J. Reynolds, F. L. Roesler, F. Scherb and J. Trauger 214 Spectrophotometry of Comet Kohoutek (1973f) During PrePerihelion Period G. S. D. Babu 220 Radio Detections of Cometary Molecular Transitions: A Review L. E. Snyder 232 xvi CONTENTS (Continued) Page Detection of Molecular Microwave Transitions in the 3mm Wavelength Range in Comet Kohoutek (1973£) D. Buhl, W. F. Huebner and L. E. Snyder 253 Radio Detection of H2O in Comet Bradfield (1974b) W. M. Jackson, T. Clark and B. Donn 272 A Search for Molecular Transitions in the 22-26 GHz Band in Comet Kohoutek 1973f E. Churchwell, T. Landecker, G. Winnewisser, R. Hills and J. Rahe • • 281 On the Cometary Hydrogen Coma and Far UV Emission: A Review H. U. Keller 287 High Resolution LY-a Observations of Comet Kohoutek by Skylab and Copernicus J. D. Bohlin, J. F. Drake, E. B. Jenkins, and H. U. Keller 315 A High-Velocity Component of Atomic Hydrgen in Comet Bennett (1970 II) H. U. Keller and Gary E. Thomas 316 Spectrophotometry of Comet Bennett from OAO-2 C. F. Lillie 322 The Gas Production Rate of Comet Bennett C. F. Lillie and H. U. Keller 323 The Scale Length of OH and CN in Comet Bennett (1970 II) H. U. Keller and C. F. Lillie 330 xvii CONTENTS (Continued) Photometric Observations of Recent Comets: A Review E. P. Ney 334 Comet Kohoutek: Ground and Airborne High Resolution Tilting - Filter IR Photometry C. Barbieri, C. B. Cosmovici, S. Dropatz, K. W. Michel, T. Nishimura, A. Roche, and W. C. Wells 357 Review - Observations of Recent Comets - Ion Tails John C. Brandt 361 A Kinematographic Study of the Tail of Comet Kohoutek (1973f) K. Jockers, R. G. Roosen, and D. P. Cruikshank ... . 370 Possible Detection of Colliding Plasmoids in the Tail of Comet Kohoutek (1973f) R. G. Roosen and J. C. Brandt 378 Luminosity and Astrometry of Comets: A Review Elizabeth Roemer 380 Comet Brightness Parameters: Definition, Determination, and Correlations David D. Meisel and Charles S. Morris 410 The Evolution of Comet Orbits: A Review Edgar Everhart 445 Nongravitational Forces on Comets: A Review B. G. Marsden 465 xviii CONTENTS (Continued) Review of Investigations Performed in the U.S.S.R. on Close Approaches of Comets to Jupiter and the Evolution of Cometary Orbits E. I. Kazimirchak-Polonskaya 490 PART II A Continuing Controversy: Has the Cometary Nucleus Been Resolved Zdenek Sekanina 537 The Nucleus: Panel Discussion C. R. O'Dell ... . W. F. Huebner . . . A. H. Delsemme . . B. Donn Fred L. Whipple . . . On the Origin of Comets Asoka Mendis and Hannds Alfven, Comet Formation Induced By the Solar Wind Fred L. Whipple and Myron Lecar . 660 C?IY\ Comets, Interstellar Clouds, and Star Clusters B. Donn Laboratory Studies of Polyatomic Cometary Molecules and Ions G. Herzberg xix CONTENTS (Continued) Laboratory Observations of the Photochemistry of Parent Molecules: A Review William M. Jackson 679 Laser Induced Photoluminescence Spectroscopy of Cometary Radicals W. M. Jackson, R. J. Cody, and M. Sabety-Dzvonik ... 7061p The Neutral Coma of Comets:
