1. Editorial

   OriginalPaper Pages: 1 - 1

2. Preface and Dedication

   • Michael F. A'Hearn
   • Hermann Boehnhardt
   • Richard M. West

   OriginalPaper Pages: 3 - 3

3. Long-term Evolution of the Outgassing of Comet Hale-Bopp From Radio Observations

   • N. Biver
   • D. Bockelée-Morvan
   • H. Rauer

   OriginalPaper Pages: 5 - 11

4. New Molecular Species in Comet C/1995 O1 (Hale-Bopp) Observed with the Caltech Ssubmillimeter Observatory

   • D. C. Lis
   • D. M. Mehringer
   • H. Rauer

   OriginalPaper Pages: 13 - 20

5. K-band Radio Observations of Comet Hale-Bopp: Detections of Ammonia and (Possibly) Water

   • M. K. Bird
   • P. Janardhan
   • C. Lemme

   OriginalPaper Pages: 21 - 28

6. The HNC/HCN Ratio in Comets

   • W. M. Irvine
   • J. E. Dickens
   • H. E. Matthews

   OriginalPaper Pages: 29 - 35

7. Observations of the OH Radical in Comet C/1995 O1 (Hale-Bopp) with the Nançay Radio Telescope

   • P. Colom
   • E. Gérard
   • H. Rauer

   OriginalPaper Pages: 37 - 43

8. Collisional Quenching of OH Radio Emission from Comet Hale-Bopp

   • F. P. Schloerb
   • C. H. Devries
   • H. A. Wootten

   OriginalPaper Pages: 45 - 51

9. A Search for Variability in the HCCN to H2CO Ratio in Comet Hale-Bopp

   • M. D. Hofstadter
   • P. Hartogh
   • W. Peters

   OriginalPaper Pages: 53 - 61

10. Evidences for extended sources and temporal modulations in molecular observations of C/1995 O1 (Hale-Bopp) at the IRAM interferometer

    • J. Wink
    • D. Bockelée-Morvan
    • L. Jorda

    OriginalPaper Pages: 63 - 63

11. A Molecular Survey of Comet C/1995 O1 (Hale-Bopp) at the IRAM Telescopes

    • D. Bockelée-Morvan
    • J. Wink
    • W. R. F. Dent

    OriginalPaper Pages: 67 - 67

12. Sulfur Chemistry at Millimeter Wavelengths in C/Hale-Bopp

    • L. M. Woodney
    • M. F. A'Hearn
    • N. Samarasinha

    OriginalPaper Pages: 69 - 70

13. Infrared Spectroscopy of Comet Hale-Bopp

    • H. A. Weaver
    • T. Y. Brooke
    • J. K. Davies

    OriginalPaper Pages: 71 - 80

14. The Infrared Spectrum of Comet Hele–Bopp as Seen by the Infrared Space Observatory

    • K. Leech
    • J. Crovisier
    • T. Lim

    OriginalPaper Pages: 81 - 83

15. What is the Parent of CH in the Coma of Comet C/1995 O1 (Hale-Bopp)?

    • Anita L. Cochran
    • D. C. Boice
    • Celine Laffont

    OriginalPaper Pages: 85 - 91

16. High-Dispersion Spectroscopy of the Sodium (NA) Emission within the Inner Coma of C/1995 O1 (Hale-Bopp)

    • E. S. Barker
    • A. L. Cochran
    • W. D. Cochran

    OriginalPaper Pages: 93 - 98

17. Fiberoptically Multiplexed Medium Resolution Spectroscopy from the WIYN Telescope, Singlet D Neutral Oxygen, NH2, and H2O+

    • Christopher M. Anderson

    OriginalPaper Pages: 99 - 104

18. Observations of High Resolution Spectra of Comet Hale-Bopp (C/1995 O1) at the SAO of the RAS

    • K. I. Churyumov
    • V. V. Klesachonok
    • G. H. Galazutdinov

    OriginalPaper Pages: 105 - 110

19. Spectra of Comet Hale-Bopp (C/1995 O1) Obtained with 6-M BTA Reflector at Mount Pastukhov

    • K. I. Churyumov
    • V. V. Kleshchonok
    • V. V. Vlassyuk

    OriginalPaper Pages: 111 - 117

20. CCD Observations of Comet Hale-Bopp at Shajn Telescope I. Coude spectra

    • P. P. Korsun
    • S. P. Davis
    • I. S. Savanov

    OriginalPaper Pages: 119 - 125

21. Spectroscopic Monitoring of Comet C/1995 O1 (Hale-Bopp)

    • I. M. Cartwright
    • A. Fitzsimmons
    • D. L. Pollacco

    OriginalPaper Pages: 127 - 127

22. Comparative Study of the Optical Spectra of Comets C/1996 B2 (Hyakutake) and C/1995 O1 (Hale-Bopp)

    • Laurits Leedjärv
    • Kalju Annuk
    • Alar Puss

    OriginalPaper Pages: 129 - 129

23. Gaseous Jets in Comet Hale-Bopp (1995 O1)

    • Susan M. Lederer
    • Humberto Campins
    • David G. Schleicher

    OriginalPaper Pages: 131 - 136

24. Surface Photometry of Comet Hale-Bopp Carbon Images

    • Yu. V. Sizonenko

    OriginalPaper Pages: 137 - 142

25. Observations of C2 Molecules in the Coma of Comets at Mitaka

    • T. Sekiguchi
    • J. Watanabe
    • N. Yamamoto

    OriginalPaper Pages: 143 - 148

26. Narrow-Band Photometry of Comet C/1995 O1 (Hale-Bopp)

    • J. Svoreň
    • R. Komžík
    • J. Živňovský

    OriginalPaper Pages: 149 - 154

27. Narrowband Electrophotometry of Comet Hale-Bopp (C/1995 O1) Near Perihelion

    • K. I. Churyumov
    • V. V. Kleshchonok
    • F. I. Kravtsov

    OriginalPaper Pages: 155 - 160

28. UV Photopolarimetric Imaging of C/1995 O1 (Hale-Bopp) with the Wide Field Imaging Survey Polarimeter (WISP)

    • W. M. Harris
    • K. H. Nordsieck
    • E. J. Mierkiewicz

    OriginalPaper Pages: 161 - 167

29. The Visual Light Curve Of C/1995 O1 (Hale-Bopp) From Discovery To Late 1997

    • M. R. Kidger
    • G. Hurst
    • N. James

    OriginalPaper Pages: 169 - 177

30. Dust Morphology Of Comet Hale-Bopp (C/1995 O1): I. Pre-Perihelion Coma Structures In

    • H. BOEHNHARDT
    • K. BIRKLE
    • R. WEST

    OriginalPaper Pages: 179 - 187

31. Comet Hale-Bopp: Evolution Of Jets And Shells During March 1997

    • G. SCHWARZ
    • C. B. COSMOVICI
    • V. OLDANI

    OriginalPaper Pages: 189 - 195

32. Dust Morphology Of The Inner Coma Of C/1995 O1 (Hale-Bopp)

    • Johan Warell
    • CLAES-INGVAR LAGERKVIST
    • JOHAN S. V. Lageros

    OriginalPaper Pages: 197 - 203

33. Evolution of Dust Shells and Jets in the Inner Coma of Comet C/1995 O1 (Hale-Bopp)

    • O. LARDIÈRE
    • S. GARRO
    • J. -C. MERLIN

    OriginalPaper Pages: 205 - 210

34. Jets And Arcs In The Coma Of Comet Hale-Bopp From August 1996 To April 1997

    • CÉLINE LAFFONT
    • P. ROUSSELOT
    • D. C. BOICE

    OriginalPaper Pages: 211 - 217

35. A CCD Image Archive Of Comet C/1995 O1 (Hale-Bopp): Dust Expansion Velocities

    • M. BRAUNSTEIN
    • R. COMSTOCK
    • C. MODI

    OriginalPaper Pages: 219 - 227

36. Observations of the Dust Cloud in Comet Hale-Bopp on 9–11 May 1997

    • N. Yamamoto
    • J. Watanabe

    OriginalPaper Pages: 229 - 233

37. A Comparison Between Near-Infrared And Visible Imaging Of The Inner Coma Of Comet Hale-Bopp At Perihelion

    • P. SANTOS-SANZ
    • N. SABALISCK
    • D. OSIP

    OriginalPaper Pages: 235 - 241

38. NICMOS/HST Post-Perihelion Images of Comet Hale-Bopp in Outburst

    • D. McCARTHY
    • S. STOLOVY
    • B. SMITH

    OriginalPaper Pages: 243 - 249

39. Infrared Observations Of Dust Emission From Comet Hale-Bopp

    • C. M. Lisse
    • Y. R. Fernández
    • L. K. Deutsch

    OriginalPaper Pages: 251 - 257

40. Near-Infrared Imaging Spectrophotometry Of Comet C/1995 O1 (Hale-Bopp) Near Perihelion

    • David E. Harker
    • Charles E. Woodward
    • W. J. Forrest

    OriginalPaper Pages: 259 - 264

41. Spectrocam-10 Thermal Infrared Observations Of The Dust In Comet C/1995 O1 Hale-Bopp

    • T. L. Hayward
    • M. S. Hanner

    OriginalPaper Pages: 265 - 270

42. Mid-Infrared Spectro-Imaging Observations Of Comet Hale-Bopp

    • P. Galdemard
    • P. O. Lagage
    • D. Bockelée-Morvan

    OriginalPaper Pages: 271 - 277

43. Ir Observations Of An Outburst In Comet Hale-Bopp (C/1995 O1)

    • Gian Paolo Tozzi
    • Filippo Mannucci
    • Ruggero Stanga

    OriginalPaper Pages: 279 - 284

44. Discovery Of Mg-Rich Pyroxenes In Comet C/1995 O1 (Hale-Bopp): Pristine Grains Revealed At Perihelion

    • Diane H. Wooden
    • David E. Harker
    • Harold M Butner

    OriginalPaper Pages: 285 - 291

45. Thermal Infrared Spectra of Comet Hale-Bopp at Heliocentric Distances of 4 and 2.9 AU

    • John K. Davis
    • Thomas R. Geballe
    • Dominique Bockelée-Morvan

    OriginalPaper Pages: 293 - 298

46. Isophot Observations Of Comet Hale-Bopp

    • S. B. Peschke
    • E. Grün
    • J. Zarnecki

    OriginalPaper Pages: 299 - 304

47. Spectroscopy Of Comet Hale-Bopp In The Visible/Near Infrared: Modeling Of Dust Properties

    • G. Bellucci

    OriginalPaper Pages: 305 - 311

48. Dust Morphology Of Comet Hale-Bopp (C/1995 O1). Ii. Introduction Of A Working Model

    • S. Sekanina
    • H. Boehnhardt

    OriginalPaper Pages: 313 - 319

49. Modeling Dust Jets And Shells From Comet Hale-Bopp

    • R. Vasundhara
    • Pavan Chakraborty
    • Erwin Heiser

    OriginalPaper Pages: 321 - 328

50. An Early Investigation Of The Striated Tail Of Comet Hale-Bopp (C/1995 O1)

    • J. Pittichovâ
    • Z. Sekenina
    • P. Keller

    OriginalPaper Pages: 329 - 338