Hostname: page-component-cd9895bd7-hc48f Total loading time: 0 Render date: 2024-12-27T08:24:23.248Z Has data issue: false hasContentIssue false
  • English
  • Français

15. Commission Pour l’Etude Physique des Cometes

Published online by Cambridge University Press:  16 November 2021

K. Wurm

Abstract

An abstract is not available for this content so a preview has been provided. As you have access to this content, a full PDF is available via the ‘Save PDF’ action button.
Image of the first page of this content. For PDF version, please use the ‘Save PDF’ preceeding this image.'
Type
Reports of Commissions
Information
Transactions of the International Astronomical Union , Volume 12 , Issue 1: Reports on Astronomy , 1965 , pp. 163 - 181
Copyright
Copyright © Academic Press 1965 

References

Part III. Bibliography

Note that short abstract of the quoted papers are indicated, in parentheses, after the reference; these are generally not the exact titles of the paper.

Books and monographs

1. Richter, N.B. The Nature of Comets. Methuen & Co. Ltd. 1963. English revised edition of Statistik and Physik der Kometen. Johann Ambrosius Barth, Leipzig 1954, translated and revised by Arthur Beer, with an introduction by Lyttleton, R. A..Google Scholar
2. Middlehurst, B. M., Kuiper, G. P. The Solar System, Vol. IV: The Moon, Meteorites and Comets. University of Chicago Press 1963.Google Scholar
3. Roemer, , Elisabeth, ibid. Chapter 15. Comets: Discovery, Orbits, Astrometrie Observations p. 527.Google Scholar
4. Porter, J. G. ibid. Chapter 16. The Statistics of Comet Orbits. p. 550.Google Scholar
5. Wurm, K. ibid. Chapter 17. The Physics of Comets. p. 573.Google Scholar
6. Biermann, L., Lüst, Rh. ibid. Chapter 18. Structure and Dynamics of Tails, p. 618.Google Scholar
7. Whipple, F. L. ibid. Chapter 19. On the Structure of Cometary Nucleus, p. 639.Google Scholar
8. Oort, J. H. ibid. Chapter 20. Empirical Data on the Origin of Comets, p. 685.Google Scholar
9. Baldet, F., Bertaud, Ch. (a) J. Observateurs, 45, 243, 1962. (Magnitudes of Comet Giacobini-Zinner).Google Scholar
(b) L’Astronomie, 73, 119, 1962. (Aspect and magnitudes of Comet Seki-Lines 1962 c).Google Scholar
10. Beyer, M. (a) Astr. Nachr., 286, 219, 1961. (Magnitudes of 11 comets, burst of Comet Schwassmann-Wachmann 1925 I).Google Scholar
(b) Astr. Nachr., 287, 153, 1963. (Magnitudes of 5 comets).Google Scholar
11. Bushko, R. P. Bjull. Inst. astrof. A. N. Tadzikskoj SSR, no 31, 23, 1962. (Influence of extinction on magnitudes).Google Scholar
12. Grygar, I., Kvizova, Z. Bull. astr. Inst. Csl., 12, 158, 1961. (Isophotes of Comets 1956 h, 1959 b, 1959 k).Google Scholar
13. Miller, F. D. Astrophys. J., 134, 1007, 1961. (Monochromatic photometry in C2(0,0) 5165Å of Comet Burnham 1960 II).Google Scholar
14. Öpik, E. J. Irish astr.J., 6, 93, 1963. (Critical discussion of conventional photometry of comets, real dimensions of heads, loss of mass, magnitudes of artificial comets).Google Scholar
15. Sekanina, Z. (a) Bull. astr. Inst. Csl., 15, 1964 (a), in print. (Perihelion asymmetry of light curves).Google Scholar
(b) Bull. astr. Inst. Csl., 15, 1964 (b), in print. (Secular variations in absolute brightness of short-period comets).Google Scholar
16. Sinton, W. M. Publ. astr. Soc. Pacif., 71, 13, 1959. (Photo-electric magnitudes and colours of Comet Burnham 1958a).Google Scholar
17. Vanýsek, V., Tremko, I. Bull. astr. Inst. Csl., 15, 1964, in print. (UBV colours of comets Humason 1961 e, Seki 1961 f, Alcock 1963 b. Density distribution of CN in Comet Alcock 1963 b).Google Scholar
18. Vsekhsvyatsky, S. K. (a) Astr. Zu., 39, 1064, 1962 (a). (Supplement to catalogue of absolute magnitudes).Google Scholar
(b) Astr. Zu., 40, 176, 1963 (b). (Magnitudes of Comet Seki-Lines 1962 c).Google Scholar
(c) Astr. Cirk. U.S.S.R. no. 246, 1963 (c). (Magnitudes of Comet Alcock 1963 b).Google Scholar
19. Bobrovnikoff, N. T. Publ. Lick Obs., 17, 404, 1931. (Velocity of gas expansion).Google Scholar
20. Donn, B., Sears, G. W. Science, 140, 1208, 1963. (Condensation of cometary crystal particles).Google Scholar
21. Fesenkov, V. G. Astr. Zu., 39, 569, 1962. (Repetition of characteristics of Whipple nucleus).Google Scholar
22. Florenskii, K. P., Zotkin, I. T. Priroda, no. 8, 31, 1962. (Data about 1908 Tunguska fall).Google Scholar
23. Levin, B. Y. Astr. Zu., 39, 763, 1962. (Constitution of nuclei material).Google Scholar
24. Lyttleton, R. A. The Comets and their Origin. Cambridge University Press, Cambridge, 1953. (Dust particle model).Google Scholar
25. Miller, S. L. Proc. nat. Acad. Sci. U.S.A., 47, 1798, 1961. (Hydrates in the solar system).Google Scholar
26. Öpik, E. J. Astr. J., 66, 381, 1961. (Disintegration of cometary nuclei).Google Scholar
27. Roemer, , Elis, . Publ. astr. Soc. Pacif., 74, 351, 1962. (Bursts in comets, etc.).Google Scholar
28. Sekanina, Z. Bull. astr. Inst. Csl., 13, 155, 1961. (Collisions between comets and interplanetary dust).Google Scholar
29. Squires, R. E., Beard, D. B. Astrophys.J., 133, 657, 1961. (Non-gravitational forces on nuclei).Google Scholar
30. Southworth, R. B. Astr. J., 68, 293, 1963. (‘Synchrones’ formations in Comet Arend-Roland).Google Scholar
31. Whipple, F. L. Astrophys.J., 111, 375, 1950; 113, 464, 1951; 121, 750, 1955. See also (7). (Properties of cometary nuclei, ‘icy-conglomerate’ model).Google Scholar
32. Andrillat, Y. J. Observateurs, 45, 373, 1962. Publ. Obs. Hte.-Provence, 6, no. 18. (Spectrum of Comet Candy 1960 n, intensities of the bands of NH, CN, CH, C2, C3).Google Scholar
33. Andrillat, Y., Malaise, D. J. Observateurs, 44, 147, 1961. (Comet Candy 1960 n, analysis of four spectrograms, range 3500-5200Å, dispersions 39Å/mm).Google Scholar
34. Arpigny, C., Woszczyk, A. Bull. Soc. R. Sci. Liège, 31, 382, 1962. (Comet 1957 d; NH2 emission, dispersion 27Å/mm, proof of fluorescence excitation).Google Scholar
35. Bretz, M. C. J. Observateurs, 45, 255, 1962. (Comet Honda 1962 d 3 spectrograms, dispersion 20 and 40Å/mm, intensity estimates, no continuum).Google Scholar
36. Carrington, T. Astrophys. J., 135, 883, 1962. (Description of fluorescence excitation in comets as a Markov process).Google Scholar
37. Ciurla, T. Acta astr., 12, 55, 1962. (Measurements of polarisation for Comet Burnham 1959 k).Google Scholar
38. Convay, R. G., Shutter, W. L. H., Wild, P. A. T. Observatory, 81, 106, 1961. (Attempt to observe radio emission from Comet Burnham 1959 k at 240 Mc/s and 1393 Mc/s. No emission found).Google Scholar
39. Dossin, F., Fehrenbach, C., Haser, L., Swings, P. Ann. Astrophys., 24, 519, 1961. (Spectra of Comet Burnham 1959 k, dispersion 19.5 to 78Å/mm, range 3000 to 8900Å, continuum weak).Google Scholar
40. Dossin, F., Rousseau, C. C.R. Acad. Sci. Paris, 255, 2373, 1962 = Publ. Obs. Hte.- Provence, 6, no. 19. (Spectra and photometry of Comet Humason 1961 e, dispersion 40Å/mm).Google Scholar
41. Dufay, J., Barrane, A. Ann. Astrophys., 25, 301, 1962. (Spectra of Comet Wilson-Hubbard 1961 d, range 4300-6200Å, dispersion 50Å/mm, continuum strong).Google Scholar
42. Ericson, W.C., Brissenden, P. Astrophys. J., 136, 1138, 1962. (Radio observations at 26.3 Mc/s, no emission found).Google Scholar
43. Fehrenbach, C. C.R. Acad. Sci. Paris, 256, 3788, 1963 = Publ. Obs. Hte.-Provence, 6, no. 30. (Spectrum of Comet Ikeya 1963 a, dispersion 20 and 40Å/mm, C12C13, C13C13present, continuum weak).Google Scholar
44. Flynn, F. H. Observatory, 81, 247, 1961. (Intense far-red emission from Comet Candy 1960 n, attributed to the CN red system).Google Scholar
45. Greenstein, J. L., Arpigny, C. Astrophys. J., 135, 892, 1962. (Palomar coudé spectra of Comet Mrkos 1957 d. C2 and NH2 bands resolved, Na D-lines exhibit a particular structure).Google Scholar
46. Greenstein, J. L. Astrophys. J., 136, 688, 1962. (Spectra of Comet Humason 1961 e, dispersion 180Å/mm, CO+ very prominent, continuum weak).Google Scholar
47. Grudzinska, S. Ciel et Terre, 76, 173, 1960. (Abundances of molecules and of dust in comets).Google Scholar
48. Hunaerts, J., Velghe, A. Bull. astron. Obs. R. Belg., 5, 24, 1959. (19 objective-prism spectra of Comet Arend-Roland and 5 of Comet Mrkos 1957 d).Google Scholar
49. Malaise, D. J. Observateurs, 44, 144, 1961. (Spectra of Comet Encke 1960 i).Google Scholar
50. Miller, F. D. Publ. astr. Soc. Pacif., 73, 462, 1961. (Spectrum of Comet Wilson 1961 d. continuum and bands are seen).Google Scholar
51. Miller, F. D. Publ. astr. Soc. Pacif., 74, 60, 1962. (Three objective-prism spectra of Comet 1955 e).Google Scholar
52. Miller, F. D. Publ. astr. Soc. Pacif., 74, 528, 1962. (Four objective-prism spectrograms of Comet Humason 1961 e).Google Scholar
53. Nguyen-Huu-Doan, Publ. Obs. Hte.-Provence, 4, no. 57, 1959. (10 objective-prism spectrograms of Comet Mrkos 1957 d, intensity ratios of bands).Google Scholar
54. O’Dell, C. R., Osterbrock, D. E. Astrophys. J., 136, 559, 1962. (Photometry of spectra of Comet Seki 1961 f).Google Scholar
55. Stawikowski, A. Bull. Soc. R. Sci. Liège, 31, 414, 1962. (High-dispersion spectra of Comet Burnham 1959 k).Google Scholar
56. Swings, P. Ann. Astrophys., 25, 165, 1962. (Appearance and behaviour of the [O1]-lines in comets).Google Scholar
57. Swings, P., Fehrenbach, C. C.R. Acad. Sci. Paris, 255, 1826, 1962 = Publ. Obs. Hte.- Provence, 6, no. 12. (Six spectrograms of Comet Seki-Lines 1962 e, dispersion 10, 20, 40 and soÅ/mm, green [O1]-line present).Google Scholar
58. Vandekerkhove, E. Bull. astron. Obs. R. Belg., 5, 22, 1959. (Three objective-prism spectra of Comet Mrkos 1957 d).Google Scholar
59. Warner, B., Harding, G. A. Observatory, 83, 219, 1963. (Spectra of Comet Humason 1961 e, very low rotational temperature of CO+ molecules).Google Scholar
60. Warner, B. Observatory, 83, 223, 1963. (High-resolution spectra of Comet Seki-Lines 1962 c, dispersion 31Å/mm, unexplained intensity ratio of the Na D-lines).Google Scholar
61. Woszczyk, A., Arpygni, C. Bull. Soc. R. Sci. Liège, 31, 382, 1962. (Irregularities in the rotational series of Comet Mrkos 1957 d; spectra from high dispersion).Google Scholar
62. Woszczyk, A. Bull. Soc. R. Sci. Liège, 31, 396, 1962. (Tables of wavelengths of spectra of Comet Mrkos 1957 d, intensities).Google Scholar
63. Biermann, L., Trefftz, E. Z. Astrophys. in press, (Excitation of [Ol] lines; ionization in cometary atmospheres).Google Scholar
64. Hunaerts, I. Ann. Astrophys., 22, 812, 1959. (Rotational structure of bands).Google Scholar
65. Rémy-Battiau, L. Ann. Astrophys., 25, 17, 1962. (Excitation of [O1] lines).Google Scholar
66. Swings, P. Lick Obs. Bull., 19, 131 1941. (Influence of lines and blends in the Fraunhofer spectrum on excitation in comets).Google Scholar
67. Wurm, K. (a) 4ème Coll. Int. Astroph. Liège, 1952. Louvain, Ceuterick, 1953. See discussion on page 277. (Argument against charge-exchange ionization by solar protons).Google Scholar
(b) Z. Astrophys., 5, 10, 1932. (Differences in band structure of homo- and hetero-polar compounds).Google Scholar
(c) Z. Astrophys., 15, 154, 1938. (Influence of frequency of excitation on rotational structure).Google Scholar
(d) 10ème Coll. Int. Astrophys. Liège, 1960. Cointe-Sclessin, Inst. Astrophys., 1961, p. 369. (Ionization in comets).Google Scholar
(e) Astr. J., 66, 362, 1961. (Ionization in comets, life-time of neutral molecules).Google Scholar
(f) Mitt. Hamburg. Sternw. Nr. 51. Vol. 8, 1943. (Time-scale of ionization in comets).Google Scholar
(g) Icarus, 1, 144, 1962. (Origin of CO+ streamers).Google Scholar
(h) Icarus, in print; see also Trans. IAU. 11B, 231. (‘Large field’ ionization probability).Google Scholar
68. Haser, L. Bull. Acad. R. Belg., 43, 740, 1957. (Physical and mathematical models of comae).Google Scholar
69. Konopleva, V. P. Publ. Kiev. astr. Obs., 8, 52, 1959; 9, 44, 1961; 11, 59, 1962. (Densities of molecules from the distribution of surface brightness).Google Scholar
70. Miller, F. D. Astrophys. J., 134, 1007, 1961. (Surface brightness and models).Google Scholar
71. O’Dell, C. R., Osterbrock, D. E. Astrophys. J., 136, 559, 1962. (Model of C2-coma, density distribution of C2).Google Scholar
72. Vorontsov-Velyaminov, B. A. Astr. Zu., 37, 709, 1960. (Surface brightness distribution and densities in Comet 1942 g).Google Scholar
73. Wurm, K. (a) Astr. J., 66, 362, 1961.Google Scholar
(b) see (5) page 603.Google Scholar
(c) Icarus, in press.Google Scholar
(d) Icarus 2, 29, 1963. (Models of C2- and CN- comae (a), (b), (c); Shape of Na- coma (d) )Google Scholar
74. Alfvén, H. Tellus, 9, 92, 1957. (Foundation of transverse magnetic field theory).Google Scholar
75. Biermann, L. Z. Astrophys., 29, 274, 1951. (Correlation of tail activity with solar activity).Google Scholar
76. Brosowski, B., Schmidt, H. U., Biermann, L. Bayer. Akad. Wiss., Sitz. Ber., Juli 1962. (Interaction between solar plasma and cometary gas).Google Scholar
77. Donn, B. Ann. Astrophys., 25, 319, 1962. (Tails of comets of large heliocentric distance with curvature explained by the Bessel-Bredikhin theory under the assumption of dust composition).Google Scholar
78. Guigay, G. (a) J. Observateurs, 45, 364, 1962. (Analysis of the dust tail of Comet Mrkos 1957 d, repulsive force 1 – μ = 0·75).Google Scholar
(b) J. Observateurs, in press. (Changes in structure of Comet Jurlof-Achmarof-Hassel 1939 III and solar activity).Google Scholar
(c) Translation and analysis of S. V. Orlov’s book, in print: On the nature of comets. Moscow 1958.Google Scholar
(d) Translation and analysis of O. W. Dobrovolsky’s book, in preparation: Solar activity and unsteady processes in comets. See reference (89).Google Scholar
79. Harwit, M., Hoyle, F. Astrophys. J., 135, 867, 1962. (Transverse magnetic field theory of comet tails II).Google Scholar
80. Hoyle, F., Harwit, M. Astrophys. J., 135, 861, 1962. (Transverse magnetic field theory of comet tails I).Google Scholar
81. Lüst, Rh. (a) Z. Astrophys., 51, 163, 1961. (Tail activity during low magnetic disturbance).Google Scholar
(b) Z. Astrophys., 54, 67, 1962. (Tail structure of Comet Mrkos 1957 d).Google Scholar
(c) Z. Astrophys., 57, 192, 1963. (Comet Abell 1953 g and tail activity).Google Scholar
82. Malaise, D. in print (Position of tail axis of Comet Burnham 1959 k).Google Scholar
83. Öpik, E. J. Z. Astrophys., in print. (Direction of acceleration (repulsive forces) in ion tails).Google Scholar
84. Wurm, K., Lehmann, W. Himmelswelt, 55, 16, 1947. (‘Closing-in’ of tail streamers).Google Scholar
85. Wurm, K. 4ème Coll. Int. Astroph. Liège, 1952. Ceuterick, Louvain, 1953. (‘Closing-in’ of tail rays and initial velocity tail ions).Google Scholar
86. Wurm, K. Icarus, in print. (Position of tail axis determined by the outflow of ions near the nucleus).Google Scholar
87. Baldet, F. (a) Encyclopédie de la Pléiade. Astronomie, p. 186, Paris, Gallimard, 1962. (Orbits and ephemerides of planets and comets).Google Scholar
(b) Annuaire du Bureau des Longitudes pour 1962, A. 1-13. (List of cornets from 1949 to 1960).Google Scholar
88. Bilo, E. H., van Houten-Groeneveld, I. Bull. astr. Inst. Netherlds., 15, 155, 1960. (Original l/a values of 17 cometary orbits).Google Scholar
89. Dobrovolsky, O. W. [Solar activity and unsteady processes in comets]. In Russian. Trudy Inst. astrof. Akad. Nauk Tadzikskoj SSR (Stalinabad), 8, 1961. (Deals with the question of a correlation between solar and cometary activity).Google Scholar
90. Pels-Kluyver, H. A. Bull. astr. Inst. Netherlds., 15, 163, 1960. (Original l/a values of two comets).Google Scholar
91. Porter, J. G. (a) Mem. Brit. astr. Assoc., 39, no. 3, 1961. (Catalogue of cometary orbits (Equinox 1960) ).Google Scholar
(b) Vistas in Astr., 3, 131, 1960. (Comet Arend-Roland 1956 h and Comet Mrkos 1957 d).Google Scholar
92. Richter, N. Vistas in Astr., 3, 135, 1960. (Cometary physics and the comets Arend-Roland 1956 h and Mrkos 1957 d).Google Scholar
93. Steins, K. A. Astr. Zu., 38, 107, 1961; 39, 915, 1962. (The author obtains further arguments against the ejection hypothesis of the origin of comets).Google Scholar
94. Stumpff, P. Astr. Nachr., 286, 87, 1961. (Statistic of type I tails and solar activity).Google Scholar
95. Vsekhsvyaksky, S. K. (a) Astr. Zu., 39, 2, 290, 1962. See there further literature. (Origin of small bodies in the solar system from eruptive processes on planetary bodies).Google Scholar
(b) Publ. Kiev. astr. Obs. no. 8, 13, 1959. (Objections against the existence of large clouds of cometary nuclei).Google Scholar
96. Ballik, E. A., Ramsay, D. A. (a) Astrophys. J., 137, 61, 1963. (Full discussion of the groundstate of C2).Google Scholar
(b) Astrophys. J., 137, 84, 1963. (Summary about all known C2-systems).Google Scholar
97. Brewer, L., Engelke, J. W. J. chem. Phys., 36, 992, 1962. (About the spectrum of C3).Google Scholar
98. Dixon, R. N. (a) Can. J. Phys., 38, 10, 1960. (Spectroscopic investigation of the NCO molecule).Google Scholar
(b) Phil. Trans., 252a, 165, 1960 (NCO molecule).Google Scholar
99. Douglas, A. E. Astrophys. J., 114, 466, 1951. (First identification of C3 in comets).Google Scholar
100. Douglas, A. E., Hollas, J. M. Can. J. Phys., 39, 479, 1961. (Analysis of NH3 bands).Google Scholar
101. Douglas, A. E. Disc. Far. Soc. no. 35, 158, 1963. (Report about NH3 bands).Google Scholar
102. Felenbok, P. Ann. Astrophys., 26, 393, 1963. (Rotational analysis of several bands of the system B 2 Σ + ± A 2 Σ + of OH and OD, Franck-Condon factors for OH and OD transitions, new bands of the system C 2 Σ + – A 2 Σ + of OH, in OD continuous spectrum associated with [O1] 5577Å observed).Google Scholar
103. Herman, L., Felenbok, P., Herman, R. J. Phys. Radium, 23, 979, 1962. (Photometric study of B 2 Σ – X 2 Σ bands of N2 +).Google Scholar
104. Herzberg, G. Astrophys. J., 96, 314, 1942. (4050Å group (C3) excited in laboratory source).Google Scholar
105. Herzberg, G., Johns, J. W. C. in press. (CH absorption in UV, Rydberg series, ionization energy 10·64 eV, CH+ dissociation 4-·9 eV).Google Scholar
106. Herzberg, G., Monfils, A. J. molec. Spectr., 5, 482, 1960. (Spectrum of H2 in the region 1000-800 Å).Google Scholar
107. Herzberg, G. Proc. R. Soc. London, 262a, 291, 1961. (Analysis of CH3 bands).Google Scholar
108. Herzberg, G., Gausset, L., Lagerquist, A., Rosen, B. Disc. Far. Soc. no. 35, 113, 1963. (C3 Spectrum).Google Scholar
109. Herzberg, G., Warsop, P. A. Can. J. Phys., 4, 286, 1963. (HNCN bands).Google Scholar
110. Johns, J. W. C. Can. J. Phys., 41, 209, 1963. (H20 and D20 bands near 1250Å).Google Scholar
111. Legay, F. Can.J. Phys., 38, 797, 1960. (PH bands).Google Scholar
112. Monfils, A. Bull Acad. R. Belg. (Sci.), 47, 585, 599, 816, 1961. (H2 in the region 1000-800 Å.)Google Scholar
113. Namioka, T. in press. (H2 in the region 1000-800Å.)Google Scholar
114. Nicholls, R. W. Can. J. Phys., 40, 523, 1962. (Franck-Condon factors for the 2 Πg – A 2 Πu system of N2 +).Google Scholar
115. Ramsay, D. A., Clement, M. J. Y. Can. J. Phys., 39, 205, 1961. (HNO bands).Google Scholar
116. Ramsay, D. A., Johns, J. W. C. Can. J. Phys., 39, 210, 1961. (HS bands).Google Scholar
117. Ramsay, D. A., Bancroft, J. W., Hollas, J. M. Can. J. Phys., 40, 322, 1962. (HNO bands).Google Scholar
118. Ramsay, D. A., Priddle, S. H., Johns, J. W. C. Disc. Far. Soc., 35, 90, 1963. (HCO bands).Google Scholar
119. Rigutti, M., Drago, F. Ann. Astrophys., 26, 253, 1963. (Analysis of the (2,0) and (3,1) band of the red CN system).Google Scholar
120. Reever, E. M., Nicholls, R. W. Proc. phys. Soc., 78, 588, 1961. (Rotational distribution in ionic collisions (N2 +) ).Google Scholar
121. Singh, N. L., Jain, D. C. Can. J. Phys., 40, 520, 1962. (Potential energy curve of A 3 Π 4 of C2).Google Scholar
122. Verma, R. D., Warsop, P. A. Can. J. Phys., 41, 152, 1963. (Si2 bands).Google Scholar
123. Wallace, L. Astrophys. J. Suppl., 6, no. 62, 445, 1962. (Electronic states and band heads of N2 and N2 +).Google Scholar
124. Wallace, L. Astrophys. J. Suppl., 7, no. 68, 165, 1962. (Electronic states and band heads of C2, CH, CN, CO, NH, NO, O2, OH and their ions).Google Scholar
125. Baldet, F. C.R. Acad. Sci. Paris, 161, 272, 1915. (Tail streamers and magnetic fields in tails).Google Scholar
126. Biermann, L., Lüst, R., Lüst, Rh., Schmidt, H. U. Z. Astrophys., 53, 226, 1961. (Proposals for an artificial comet).Google Scholar
127. Corbin, H. C. Space Age Astronomy, p. 380. Ed. by Deutsch, A. J. and Klemperer, W. B.. N.Y.-London, Academic Press, 1962. (Remarks on a comet probe; list of comets approaching the Earth).Google Scholar
128. Donn, B., Alexander, W. M. Goddard Space Flight Center Publ. Astrophysics Branch. (a) 1960, (b) 1961. (Discussion of comet probes; theory of an artificial comet experiment).Google Scholar
129. Lair, I. C. Space Technolog. Lab. Rept. no. 9844-0023, 1961. (The mission to a comet).Google Scholar
130. Rae, E. D., Graham, W. P. Astr. Nachr., 187, 17, 1911. (Tail streamers as orbits of ions).Google Scholar
131. Swings, P. (a) Space Age Astronomy, p. 370. Ed. by Deutsch, A. J. and Klemperer, W. B., N. Y.-London, Academic Press, 1962. (Objectives of Space Investigations of Comets).Google Scholar
(b) Smithsonian Contr. Astroph., in press. (Contributions of space experiments to cometary physics.)Google Scholar