Space Science Reviews

, Volume 67, Issue 3–4, pp 241–362 | Cite as

The AM CVn systems: A bibliographic search for clues to their cataclysmic nature

Article

Abstract

The nature of AM CVn, GP Com, CR Boo, and V803 Cen is investigated in detail on the basis of a comprehensive review of all that to-date is known about these systems. They are classified as cataclysmic variables, within these forming the subclass of AM CVn systems; their distinguishing characteristic is an extreme H-deficiency. Besides, they are very blue and display periodicities on the order of minutes. Although in several aspects they behave like cataclysmics, in others they differ from them. The most widely accepted interpretation for their nature involves two interacting He white dwarfs in a very close orbit. The validity of such a model is evaluated in the present work.

Keywords

Distinguishing Characteristic Close Orbit Cataclysmic Variable Bibliographic Search Cataclysmic Nature 

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References

  1. Abbott, T. M., Robinson, E. L., Hill, G. J., and Haswell, C. A.: 1992,Astrophys. J. 399, 680.Google Scholar
  2. Angel, J. R. P. and Landstreet, J. D.: 1970.Astrophys. J. 162, L61.Google Scholar
  3. Angel, J. R. P., Borra, E., and Landstreet, J. D.: 1981,Astrophys. J. Suppl. Ser. 45, 457.Google Scholar
  4. Becker, R. M.: 1981,Astrophys. J. 251, 626.Google Scholar
  5. Bern, K. and Wramdemark, S.: 1973,Lowell Obs. Bull. 161.Google Scholar
  6. Bohlin, R. C. and Grillmair, C. J.: 1988a,Astrophys. J. Suppl. Ser. 66, 209.Google Scholar
  7. Bohlin, R. C. and Grillmair, C. J.: 1988b,Astrophys. J. Suppl. Ser. 68, 487.Google Scholar
  8. Bohlin, R. C., Savage, B. D., and Drake, J. F.: 1978,Astrophys. J. 224, 132.Google Scholar
  9. Bonnet-Bidau, J. M. and Mouchet, M.: 1987,Astron. Astrophys. 188, 89.Google Scholar
  10. Brickhill, A. J.: 1975,Monthly Notices Roy. Astron. Soc. 170, 405.Google Scholar
  11. Brocklehurst, M.: 1972,Monthly Notices Roy. Astron. Soc. 157, 211.Google Scholar
  12. Bues, I.: 1970,Astron. Astrophys. 7, 91.Google Scholar
  13. Burbidge, E. M. and Strittmatter, P. A.: 1971,Astrophys. J. 170, L39.Google Scholar
  14. Burbidge, G., Burbidge, M., and Hoyle, F.: 1967,Astrophys. J. 147, 1219.Google Scholar
  15. Burg, J. P.: 1967, inProc. of the 37th Meeting, Soc. Explor. Geophys'., Oklahoma City (quoted in Richeret al., 1973).Google Scholar
  16. Burg, J. P.: 1968, presented at ‘NATO Advanced Study Institute on Signal Processing’, Enschede, Holland (quoted in Richeret al., 1973).Google Scholar
  17. Campbell, C. G.: 1984,Monthly Notices Roy. Astron. Soc. 207, 433.Google Scholar
  18. Coe, M. J., Engel, A. R., and Quenby, J. J.: 1978,Nature 272, 37.Google Scholar
  19. Cooley, J. W. and Tukey, J. W.: 1965,Math. Computation 19, 297.Google Scholar
  20. Cropper, M.: 1985,Monthly Notices Roy. Astron. Soc. 212, 709.Google Scholar
  21. Cropper, M.: 1986,Monthly Notices Roy Astron Soc. 222, 225.Google Scholar
  22. Drew, J. E.: 1986,Monthly Notices Roy. Astron. Soc. 218, 41p.Google Scholar
  23. Durisen, R. H.: 1977,Astrophys'. J. 237, 145.Google Scholar
  24. Efimov, Yu. S.: 1981,Izv. Krymsk. Astrofiz. Obs. 63, 118.Google Scholar
  25. Eggen, O. J.: 1968,Astrophys. J. Suppl. Ser. 16, 97.Google Scholar
  26. Eggen, O. J.: 1985,Publ. Astron. Soc. Pacific 97, 1029.Google Scholar
  27. Eggen, O. J. and Greenstein, J. L.: 1965,Astrophys. J. 141, 83.Google Scholar
  28. Elsworth, Y., Grimshaw, L., and James, J. F.: 1982,Monthly Notices Roy. Astron. Soc. 201, 45.Google Scholar
  29. Elvius, A.: 1975,Astron. Astrophys. 44, 117.Google Scholar
  30. Emanuelsen, P.-I.: 1990, Master Thesis, Tromsø University, Norway.Google Scholar
  31. Engel, A. R. and Coe, M. J.: 1978,Space Sci. Instr. 3, 408.Google Scholar
  32. Eracleous, M., Halpern, J., and Patterson, J.: 1991a,Astrophys. J. 382, 290.Google Scholar
  33. Eracleous, M., Patterson, J., and Halpern, J.: 1991b,Astrophys. J. 370, 330.Google Scholar
  34. Evans, Ch. R., Iben, I., and Smarr, L.: 1987,Astrophys. J. 323, 129.Google Scholar
  35. Faulkner, J., Flannery, B. P., and Warner, B.: 1972,Astrophys. J. 175, L79.Google Scholar
  36. Giacconi, R., Branduardi, G., Briel, U., Epstein, A., Fabricant, D., Feigelson, E., Forman, W., Gorenstein, P., Grindlay, J., Gursky, H., Harnden, F. R., Henry, J. P., Jr., Jones, C., Kellogg, E., Koch, D., Murray, S., Schreier, E., Seward, F., Tananbaum, H., Topka, K., Van Speybroeck, L., Holt, S. S., Becker, R. H., Boldt, E. A., Serlemitsos, P. J., Clark, G., Canizares, C., Markert, T., Novick, R., Helfand, D., Long, K.: 1979,Astrophys. J. 230, 540.Google Scholar
  37. Giclas, H. L., Burnham, R., Jr., and Thomas, N. G.: 1971,Lowell Proper Motion Survey: The G Numbered Stars, Lowell Observatory, Flagstaff, Arizona.Google Scholar
  38. Giovannelli, F., Bartolini, C., Candy, P., Gaudenzi, S., Guarnieri, A., Lombardi, S., and Piccioni, A.: 1984, in S. Kumar (ed.),Proceedings of ‘Fourth European IUE Conference’, ESA SP-218, p. 15.Google Scholar
  39. Graham, J. A.: 1969, in S. Kumar (ed.),Low Luminous Stars, Gordon and Breach, New York, p. 139.Google Scholar
  40. Graham, J. A.: 1972,Astron. J. 77, 144.Google Scholar
  41. Grauer, A. D., Wegner, G., Green, R. F., and Liebert, J.: 1989,Astron. J. 98, 2221.Google Scholar
  42. Green, R. F., Schmidt, M., and Liebert, J.: 1986,Astrophys. J. Suppl. Ser. 61, 305.Google Scholar
  43. Greenstein, J. L.: 1956a,Publ. Astron. Soc. Pacific 68, 501.Google Scholar
  44. Greenstein, J. L.: 1956b, inProceedings of ‘Third Symp. Math. Sta.’, Berkeley, University of California Press, Vol. 3, p. 11.Google Scholar
  45. Greenstein, J. L.: 1958,Encyclopedia of Physics, Vol. 50, Springer-Verlag, Berlin, p. 161.Google Scholar
  46. Greenstein, J. L. (ed.): 1960,Stellar Atmospheres, Chicago University Press, Chicago, p. 676.Google Scholar
  47. Greenstein, J. L.: 1966,Astrophys. J. 144, 496.Google Scholar
  48. Greenstein, J. L.: 1976a,Astron. J. 81, 323.Google Scholar
  49. Greenstein, J. L.: 1976b,Astrophys. J. 207, 119.Google Scholar
  50. Greenstein, J. L.: 1976c,Astrophys. J. 210, 524.Google Scholar
  51. Greenstein, J. L.: 1979, in H. M. Van Horn and V. Weideman (eds.), ‘White Dwarfs and Variable Degenerate Stars’,Proc. IAU Colloq. 53, p. 374.Google Scholar
  52. Greenstein, J. L.: 1984,Astrophys. J. 276, 602.Google Scholar
  53. Greenstein, J. L.: 1986,Astron. J. 92, 867.Google Scholar
  54. Greenstein, J. L. and Matthews, M. S.: 1957,Astrophys. J. 126, 14.Google Scholar
  55. Greenstein, J. L. and Oke, J. B.: 1982,Astrophys. J. 258, 209.Google Scholar
  56. Greenstein, J. L., Arp, H. C., and Shectman, S.: 1977a,Publ. Astron. Soc. Pacific 89, 741.Google Scholar
  57. Greenstein, J. L., Oke, J. B., Richtone, D., van Altena, W. F., and Steppe, H.: 1977b,Astrophys. J. 218, 21.Google Scholar
  58. Greenstein, J. L., Schmidt, M., and Searle, L.: 1974,Astrophys. J. 190, L27.Google Scholar
  59. Griem, H.: 1968,Astrophys. J. 154, 1111.Google Scholar
  60. Griem, H. R.: 1964,Plasma Spectroscopy, McGraw-Hill, New York.Google Scholar
  61. Harris, A. W. and Sonneborn, G.: 1989, in Y. Kondo (ed.),Exploring the Universe with the IUE Satellite, ASSL 129, Kluwer Academic Publishers, Dordrecht, Holland, p. 729.Google Scholar
  62. Herbig, G. H.: 1964,Astrophys. J. 140, 1317.Google Scholar
  63. Hesser, J. E., Ostriker, J. P., and Lawrence, G. M.: 1969,Astrophys. J. 155, 919.Google Scholar
  64. Hill, P. W.: 1987,Quart. J. Roy. Astron. Soc. 28, 225.Google Scholar
  65. Holdenreid, E. R.: 1972, Masters Thesis, University of Texas, Austin.Google Scholar
  66. Honey, W. B., Charles, P. A., Whitehurst, R., Barret, P. E., and Smale, A. P.: 1988,Monthly Notices Roy. Astron. Soc. 231, 1.Google Scholar
  67. Howell, S. B.: 1986;Astron. J. 91, 171.Google Scholar
  68. Humason, M. L. and Zwicky, F.: 1947,Astrophys. J. 105, 85.Google Scholar
  69. Hunger, K., Gruschinske, J., Kudritzki, R., and Simon, K. P.: 1981,Astron. Astrophys. 95, 244.Google Scholar
  70. Iben, I.: 1967,Astrophys. J. 147, 624 and 650.Google Scholar
  71. Iben, I. and Turan, J. W.: 1978,Astrophys. J. 220, 980.Google Scholar
  72. Iben, I. and Tutukov, A. V.: 1986,Astrophys. J. 313, 727.Google Scholar
  73. Jameson, R. F., King, A. R., and Sherrington, M. R.: 1980,Monthly Notices Roy. Astron. Soc. 191, 559.Google Scholar
  74. Kepler, S. O.: 1984,Astrophys. J. 278, 754.Google Scholar
  75. Kepler, S. O.: 1990,Rev. Mex. Astrophys. 21, 335.Google Scholar
  76. Kepler, S. O.: 1987,IAU Circ. 4332.Google Scholar
  77. Kepler, S. O., Steiner, J. E., and Jablonski, F.: 1989, in G. Wegner (ed.), ‘White Dwarfs’,Proc. IAU Colloq. 114, p. 443.Google Scholar
  78. Kholopov, P. N.: 1985,General Catalogue Variable Stars, 4th ed., Astr. Counc. Acad. Sci., Moscow.Google Scholar
  79. Kholopov, P. N., Samus, N. N., Kazarovets, E. V., and Kireeva, N. N.: 1987;Int. Bull. Var. Stars 3058.Google Scholar
  80. King, A. R.: 1988,Quart. J. Roy. Astron. Soc. 29, 1.Google Scholar
  81. Kinney, A. L., Bhoilin, R. C., and Neill, J. D.: 1991,Publ. Astron. Soc. Pacific 103, 694.Google Scholar
  82. Kippenhahn, R. and Weigert, A.: 1967,Z. Astrophys. 65, 251.Google Scholar
  83. Koester, D.: 1980,Astron. Astrophys. Suppl. Ser. 39, 401.Google Scholar
  84. Koester, D. and Chanmugam, G.: 1990,Rep. Prog. Phys. 53, 837.Google Scholar
  85. Koester, D., Vauclair, G., Dolez, N., Oke, J. B., Greenstein, J. L., and Weidemann, V.: 1985,Astron. Astrophys. 149, 423.Google Scholar
  86. Kopal, Z.: 1955,Ann. Astrophys. 18, 379.Google Scholar
  87. Kovacs, G.: 1981,Acta Astron. 31, 207.Google Scholar
  88. Krzemiński, W.: 1971, in ‘New Directions and New Frontiers in Variable Star Research’,IAU Colloq. 15, p. 178.Google Scholar
  89. Krzemiński, W.: 1972,Acta Astron. 22, 387.Google Scholar
  90. Krzemiński, W. and Smak, J.: 1971,Acta Astron. 21, 133.Google Scholar
  91. Kruszewski, A. and Semeniuk, I.: 1992,Acta Astron. 42, 311.Google Scholar
  92. la Dous, C.: 1989,Astron. Astrophys. 211, 131.Google Scholar
  93. la Dous, C.: 1990,Cataclysmic Variables and Related Objects, NASA/CNRS Monograph Series (in press).Google Scholar
  94. la Dous, C.: 1992, ‘Observations and Theory of CV's-on Progress and Problems in Understanding DN and NL stars’, Habilitationsschrift, Universität in Tübingen (see also la Dous, 1993:Space Sci. Rev., in press).Google Scholar
  95. Lambert, D. L. and Slovak, M. H.: 1981,Publ. Astron. Soc. Pacific 93, 477.Google Scholar
  96. Larsson, S.: 1988, Ph.D. Thesis, Lund University, Sweden.Google Scholar
  97. Laurterborn, D.: 1969, in M. Hack (ed.),Mass Loss from Stars, D. Reidel Publ. Co., Dordrecht, Holland, p. 262.Google Scholar
  98. Lázaro, C., Solheim, J.-E., and Arévalo, M. J.: 1989, in G. Wegner (ed.), ‘White Dwarfs’,Proc. IAU Colloq. 114, p. 458.Google Scholar
  99. Lázaro, C., Solheim, J.-E., and Arévalo, M. J.: 1990,Astrophys. Space Sci. 169, 259.Google Scholar
  100. Levine, A. M., Lang, F. L., Lewin, W. H. G., Primini, F. A., Dobson, C. A., Doty, J. P., Hoffman, J. A., Howe, S. K., Scheepmaker, A., Wheaton, W. A., Matteson, J. L., Baity, W. A., Gruber, D. E., Knight, F. K., Nolan, P. L., Pelling, R. M., Rothschild, R. E., and Peterson, L. E.: 1984,Astrophys. J. Suppl. Ser. 54, 581.Google Scholar
  101. Liebert, J.: 1977,Astrophys. J. 214, 446.Google Scholar
  102. Liebert, J., Wesemael, F., Hansen, C. J., Fontaine, C., Shipman, H. L., Sion, E. M., Winget, D. E., and Green, R. F.: 1986,Astrophys. J. 309, 241.Google Scholar
  103. Lin, D. N. and Papaloizou, J.: 1979:Monthly Notices Roy. Astron. Soc. 186, 799.Google Scholar
  104. Lin, D. N. and Papaloizou, J.: 1986,Astrophys. J. 307, 395.Google Scholar
  105. Livio, M. and Soker, N.: 1983a, in M. Livio and G. Shaviv (eds.), ‘Cataclysmic Variables and Related Objects’,IAU Colloq. 72.Google Scholar
  106. Livio, M. and Soker, N.: 1983b,Astron. Astrophys. 125, L12.Google Scholar
  107. Livio, M. and Soker, N.: 1984,Monthly Notices Roy. Astron. Soc. 208, 763.Google Scholar
  108. Luyten, W. J.: 1962,Observatory 31.Google Scholar
  109. Luyten, W. J. and Miller, W. C.: 1951,Astrophys. J. 114, 488.Google Scholar
  110. Lynden-Bell, D.: 1969,Nature 233, 690.Google Scholar
  111. Malmquist, K. G.: 1936,Stockholm Ann. 12, Part 7.Google Scholar
  112. Marar, T. M. K., Padmini, V. N., Seetha, S., Narayanan Kutty, N. R., Kasturirangan, K., Rao, U. R., and Bhattacharyya, J. C.: 1988,Astron. Astrophys. 189, 119.Google Scholar
  113. Marsh, T. R., Horne, K., and Rosen, S.: 1991,Astrophys. J. 366, 535.Google Scholar
  114. Mauche, C. W. and Raymond, J. C.: 1987,Astrophys. Spac Sci. 130, 269.Google Scholar
  115. Mayo, S. K., Wikramasinghe, D. T., and Whelan, J. A. J.: 1980, in F. M. Bateson, J. Smak, and I. J. Urch, (eds.), ‘Changing Trends in Variable Research’,IAU Colloq. 46, p. 52.Google Scholar
  116. Milone, L. A.: 1990:Astrophys. Space Sci. 172, 263.Google Scholar
  117. Moffet, T. J., Barnes, T. G., and Evans, D. S.: 1985, in Hayeset al. (eds.),Calibration of Fundamental Stellar Quantities, p. 365.Google Scholar
  118. Nather, R. E.: 1989, in G. Wegner (ed.), ‘White Dwarfs’,Proceedings IAU Colloq. 114, p. 109.Google Scholar
  119. Nather, R. E., Robinson, E. L., and Stover, R. J.: in H. M. Van Hornand V. Weideman (eds.), 1979, in ‘White Dwarfs and Variable Degenerate Stars,Proceedings IAU Colloq. 53, p. 374.Google Scholar
  120. Nather, R. E., Robinson, E. L., and Stover, R. J.: 1981,Astrophys. J. 224, 269.Google Scholar
  121. Nather, R. E., Wood, M. A., and Winget, D. E.: 1984,IAU Circ. 4021.Google Scholar
  122. O'Donoghue, D.: 1986,Monthly Notices Roy. Astron. Soc. 220, 23p.Google Scholar
  123. O'Donoghue, D.: 1990,Monthly Notices Roy. Astron. Soc. 246, 29.Google Scholar
  124. O'Donoghue, D. and Kilkenny, D.: 1989,Monthly Notices Roy. Astron. Soc. 236, 319.Google Scholar
  125. O'Donoghue, D., Menzies, J. W., and Hill, P. W.: 1987a, in A. G. D. Philip, D. S. Hayes, and J. W. Liebert (eds.), ‘The Second Conference on Faint Blue Stars’,IAU Colloq. 95, p. 693.Google Scholar
  126. O'Donoghue, D., Menzies, J. W., and Hill, P. W.: 1987b,Monthly Notices Roy. Astron. Soc. 227, 347.Google Scholar
  127. O'Donoghue, D., Wargau, W., Warner, B., Kilkenny, D., Martinez, P., Kanaan, A., Kepler, S. O., Henry, G., Winget, D. E., Clemens, J. C., and Grauer, A. D.: 1990,Monthly Notices Roy. Astron. Soc. 245, 140.Google Scholar
  128. Oke, J. B.: 1974,Astrophys. J. Suppl. Ser. 27, 21.Google Scholar
  129. Oke, J. B. and Wade, R. A.: 1982,Astron. J. 87, 670.Google Scholar
  130. Osaki, Y.: 1989,Publ. Astron. Soc. Japan 41, 1005.Google Scholar
  131. Osaki, Y.: 1990, in F. Meyer, W. J. Duschl, and E. Meyer-Hofmeister (eds.),Theory of Accretion Discs, Kluwer Academic Publishers, p. 183.Google Scholar
  132. Osaki, Y. and Hansen, C. J.: 1973,Astrophys. J. 185, 277.Google Scholar
  133. Ostriker, J. P. and Hesser, J. E.: 1968,Astrophys. J. 153, L151.Google Scholar
  134. Patterson, J.: 1979,Astrophys. J. 234, 978.Google Scholar
  135. Patterson, J.: 1981,Astrophys. J. Suppl. Ser. 45, 517.Google Scholar
  136. Patterson, J. and Raymond, J. C.: 1985,Astrophys. J. 292, 535.Google Scholar
  137. Patterson, J. P. Halpern, J., and Shambrook, A.: 1993,Astrophys. J. 419, 803.Google Scholar
  138. Patterson, J., Nather, R. E., Robinson, E. L., and Handler, F.: 1979,Astrophys. J. 232, 819.Google Scholar
  139. Patterson, J., Sterner E., Halpern, J. P., and Raymond, J. C.: 1992,Astrophys. J. 384, 234.Google Scholar
  140. Piedroshky, W. C. and Krzeminski, W.: 1978,Astrophys. J. 219, 597.Google Scholar
  141. Probst, R. G.: 1983,Astrophys. J. Suppl. Ser. 53, 335.Google Scholar
  142. Provencal, J. L., Clemens, J. C., Henry, G., Hine, B. P., Nather, R. E., Winget, D. E., Wood, M. A., Kepler, S. O., Vauclair, G., Chevreton, M., O'Donoghue, D., Warner, B., Grauer, A. D., and Ferrario, L.: 1989, in G. Wegner (ed.), ‘White Dwarfs’,Proceedings IAU Colloq. 114, p. 296.Google Scholar
  143. Provencal, J. L., Winget, D. E., Nather, R. E., Clemens, J. C., Hine, B. P., Henry, G., Kepler, S. O., Vauclair, G., Chevreton, M., O'Donoghue, D., Warner, B., Grauer, D. A., and Ferrario, L.: 1991, in G. Vauclair and E. Sion (eds.), ‘7th European Workshop on White Dwarfs’,NATO ASI Series 336, p. 449.Google Scholar
  144. Purton, C. R., Feldman, P. A., and Marsh, K. A.: 1982,Monthly Notices Roy. Astron. Soc. 198, 321.Google Scholar
  145. Rao, U. R.et al.: 1986,IAU Circ. 4210.Google Scholar
  146. Richer, H. B., Auman, J. R., Isherwood, B. C., Steele, J. P., and Ulrych, T. J.: 1973,Astrophys. J. 180, 107.Google Scholar
  147. Ritter, H.: 1985,Astron. Astrophys. 148, 207Google Scholar
  148. Ritter, H.: 1990,Astron. Astrophys. Suppl. Ser. 85, 1179.Google Scholar
  149. Robbins, R. R. and Bernat, A. P.: 1974,Astrophys. J. 188, 309.Google Scholar
  150. Robinson, E. L.: 1973,Astrophys. J. 180, 121.Google Scholar
  151. Robinson, E. L.: 1979, in H. M. Van Horn and V. Weideman (eds.), ‘White Dwarfs and Variable Degenerate Stars’,Proceedings IAU Colloq. 53, p. 343.Google Scholar
  152. Robinson, E. L.: 1987,Bull. American Astron. Soc. 19, 1057.Google Scholar
  153. Robinson, E. L. and Faulkner, J.: 1975,Astrophys. J. 200, L23.Google Scholar
  154. Schlegel, E. M., Honeycutt, R. K., and Kaitchuck, R. H.: 1985,Bull. American Astron. Soc. 17, 550.Google Scholar
  155. Schwarzenberg-Czerny, A.: 1990,C.A.O.S.P.,20, 9.Google Scholar
  156. Schweizer, F. and Middleditch, J.: 1980,Astrophys. J. 241, 1039.Google Scholar
  157. Seetha, S., Ashoka, B. N., Marar, T. M. K., Padmini, V. N., Kasturiragan, K., Rao, U. R., Bhattacharyya, J. C., Bhatt, B. C., Paiwal, D. C., and Pandey, A. K.: 1990, in C. W. Mauch (ed.),Accretion-Powered Compact Binaries, Cambridge University Press, Cambridge, p. 139.Google Scholar
  158. Shafter, A. W. and Szkody, P.: 1984,Astrophys. J. 276 305.Google Scholar
  159. Smak, J.: 1967,Acta Astron. 17, 255.Google Scholar
  160. Smak, J.: 1975,Acta Astron. 25, 228.Google Scholar
  161. Smak, J.: 1981,Acta Astron. 31, 395.Google Scholar
  162. Smak, J.: 1983,Acta Astron. 33, 333.Google Scholar
  163. Smak, J.: 1985, in F. Giovannelli (ed.),Multifrequency Behaviour of Galactic Accreting Sources, Edizioni Scientifiche Siderea, Roma, p. 3.Google Scholar
  164. Solheim, J.-E.: 1989, in G. Wegner (ed.), ‘White Dwarfs’,Proceedings IAU Colloq. 114, p. 446.Google Scholar
  165. Solheim, J.-E. and Kjeldseth-Moe, O.: 1987a,Astrophys. Space Sci. 131, 785.Google Scholar
  166. Solheim, J.-E. and Kjeldseth-Moe, O.: 1987b, in ‘Cataclysmic Variables. Recent Multi-Frequency Observations and Theoretical Developments’,Proceedings IAU Colloq. 93.Google Scholar
  167. Solheim, J.-E., Robinson, E. L., Nather, R. E., and Kepler, S. O.: 1984,Astron. Astrophys. 135, 1.Google Scholar
  168. Starket al.: 1991, (in preparation, quoted inEXOSAT databank).Google Scholar
  169. Solheim, J.-E., Emanuelsen, P.-I., Vauclair, G., Dolez, N., Chevreton, M., Barstow, M., Sansom, A. E., Tweedy, R. W., Kepler, S. O., Kanaan, A., Fontaine, G., Bergeron, P., Grauer, A. D., Provencal, J. L., Winget, D. E., Nather, R. E., Bradley, P. A., Claver, C. F., Clemens, J. C., Kleinman, S. J., Hine, B. P., Marar, T. M. K., Seetha, S., Ashoka, B. N., Leibowitz, E. M., and Mazeh, T.: 1991, in G. Vauclair and E. Sion (eds.), ‘7th European Workshop on White Dwarfs’NATO ASI Series 336, p. 431.Google Scholar
  170. Stothers, R.: 1968,Astrophys. J. 154, L91.Google Scholar
  171. Stover, R. J.: 1983,Publ. Astron. Soc. Pacific 95, 18.Google Scholar
  172. Strittmatter, P. A., Brecher, K., and Burbidge, G. R.: 1972,Astrophys. J. 174, 91.Google Scholar
  173. Strohmeier, W.: 1972,Variable Stars, Pergamon Press, London, p. 67.Google Scholar
  174. Švestka, Z.: 1976,Solar Flares, Geophysics and Astrophysics Monographs 9, D. Reidel Publ. Co., Dordrecht, Holland.Google Scholar
  175. Szkody, P., Michalsky, J. J., and Stokes, G. M.: 1982,Publ. Astron. Soc. Pacific 94, 137.Google Scholar
  176. Tanabe, K., Ohshima, O., and Kosaka, K.: 1990,Astrophys. Space Sci. 174, 155.Google Scholar
  177. Thejll, P., MacDonald, J., and Saffer, R.: 1991,Astron. Astrophys. 248, 448.Google Scholar
  178. Thejll, P., Vennes, S., and Shipman, H. L.: 1992, in G. Vauclair and E. Sion (eds.), ‘7th European Workshop on White Dwarfs’,NATO Advanced Workshop, p. 257.Google Scholar
  179. Ulla, A.: 1993a, Ph.D. Thesis, La Laguna University, Spain.Google Scholar
  180. Ulla, A.: 1993b, (on AM CVn), in preparation.Google Scholar
  181. Ulla, A.: 1993c, (on GP Com), in preparation.Google Scholar
  182. Ulla, A.: 1993d, (on CR Boo, V803 Cen and CP Eri) (in preparation).Google Scholar
  183. Ulla, A., Solheim, J.-E.: 1991, in G. Vauclair and E. Sion (eds.), ‘7th European Workshop on White Dwarfs’,NATO Advanced Workshop, p. 441.Google Scholar
  184. Valdés, F., and Freitas, R. A.: 1986,Icarus 65, 152.Google Scholar
  185. Vasilevskis, S., Harlam, E., Klemola, A., and Wirtanen, C.: 1975,Publ. Lick Obs. Rep. 22, 5.Google Scholar
  186. Vila, S.: 1971,Astrophys. J. 168, 217.Google Scholar
  187. Vogt, N.: 1982,Astrophys. J. 252, 653.Google Scholar
  188. Voikhanskaya, N. F.: 1982,Soviet Astron. 26, 558.Google Scholar
  189. Walker, M. F.: 1956,Astrophys. J. 123, 68.Google Scholar
  190. Wampler, E. J.: 1967,Astrophys. J. 149, 101.Google Scholar
  191. Warner, B.: 1971,IAU Circ. 2347.Google Scholar
  192. Warner, B.: 1972,Monthly Notices Roy. Astron. Soc. 159, 315.Google Scholar
  193. Warner, B. and Nather, R. E.: 1972a,Monthly Notices Roy. Astron. Soc. 159, 429.Google Scholar
  194. Warner, B. and Nather R. E.: 1972b,Monthly Notices Roy. Astron. Soc. 156, 305.Google Scholar
  195. Warner, B. and Robinson, E. L.: 1972,Monthly Notices Roy. Astron. Soc. 159, 101.Google Scholar
  196. Wegner, G. and Swanson, S. R.: 1991,Astrophys. J. Suppl. Ser. 75, 507.Google Scholar
  197. Wendkler, H. J.: 1987,Astron. Astrophys. Suppl. Ser. 69, 87.Google Scholar
  198. Wesemael, F.: 1981,Astrophys. J. Suppl. Ser. 45, 177.Google Scholar
  199. Wesselius, P. R., Van Duiden, R. J., de Jonge, A. R. W., Aalders, J. W. G., Luinge, W., and Wildeman, K. J.: 1982,Astron. Astrophys. Suppl. Ser.,49, 427.Google Scholar
  200. Westin, B. A. M.: 1980,Astron. Astrophys. 81, 74.Google Scholar
  201. Whitehurst, R.: 1987, Ph.D. Thesis, Oxford University, Oxford.Google Scholar
  202. Whitehurst, R.: 1988,Monthly Notices Roy. Astron. Soc. 232, 35.Google Scholar
  203. Whitford, T.: 1962,Astrophys. J. 67, 640.Google Scholar
  204. Wickramasinghe, D. T., Hintzen, P., Strittmatter, P. A., and Burbidge, E. M.: 1975,Astrophys. J. 202: 191.Google Scholar
  205. Williams, G.: 1983,Astrophys. J. Suppl. Ser. 53, 523.Google Scholar
  206. Williams, R. E., Sparks, W. H., Gallagher, J. S., Ney, E. P., Starrfield S. G., and Truran, J. W.: 1981,Astrophys. J. 251, 221.Google Scholar
  207. Williams, R. E., Woolf, N. J., Hege, E. K., Moore, R. L., and Kopriva, D. A.: 1978,Astrophys. J. 224 171.Google Scholar
  208. Wills, D.: 1968,The Observatory 88, 61.Google Scholar
  209. Winget, D. E.: 1988, in J. Christensen-Dalsgaard and S. Frandsen (eds.),Advances in Helio and Asteroseismology, p. 305.Google Scholar
  210. Winget, D. E., Nather, R. E., and Hill, J. A.: 1987,Astrophys. J. 316, 305.Google Scholar
  211. Winget, D. E., Robinson, E. L., and Nather, R. E.: 1982,Astrophys. J. 262, L11.Google Scholar
  212. Wood, M., Winget, D. E., Nather, R. E., Liebert, J., and Hessman, F. V.: 1985,Bull. American Astron. Soc. 17 886.Google Scholar
  213. Wood, M. A., Winget, D. E., Nather, R. E., and Hessman, F. V.: 1987,Astrophys. J. 313, 757.Google Scholar
  214. Wu Ch., Leventhal, M., Sarazin, C. L. and Gull, T. R.: 1983,Astrophys. J. 269, L5.Google Scholar
  215. Zirin, H.: 1988,Astrophysics of the Sun, Cambridge University Press, Cambridge.Google Scholar
  216. Zombeck, M. V.: 1990,Handbook of Space Astronomy and Astrophysics 2nd ed., Cambridge University Press, Cambridge.Google Scholar

Copyright information

© Kluwer Academic Publishers 1994

Authors and Affiliations

  • A. Ulla
    • 1
    • 2
  1. 1.Niels Bohr InstituteCopenhagen ØDenmark
  2. 2.Laboratorio de Astrofísica Espacial y Física Fundamental (LAEFF-INTA)MadridSpain

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