The pulsating white dwarf stars

Publications of the Astronomical Society of the Pacific

Volumn 120, Issue 872, 2008, Pages 1043-1096

  Fontaine, G ^a   Brassard, P ^a  

^a UNIVERSITÉ DE MONTRÉAL   (Canada)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 54849436047     PISSN: 00046280     EISSN: None     Source Type: Journal    
DOI: 10.1086/592788     Document Type: Review

References (209)

1. Allard, N. F., Koester, D., Feautrier, N., & Spielfiedel, A. 1994, A&AS, 108, 417
2. Arras, P., Townsley, D. M., & Bildsten, L. 2006, ApJ, 643, L119
3. Beauchamp, A. 1995, Ph.D. thesis, Université de Montréal
4. Beauchamp, A., Wesemael, F., Bergeron, P., Fontaine, G., Saffer, R. A., Liebert, J., & Brassard, P. 1999, ApJ, 516, 887
5. Bergeron, P., Fontaine, G., Billères, M., Boudreault, S., & Green, E. M. 2004, ApJ, 600, 404 (zz20)
6. Bergeron, P., & McGraw, J. T. 1990, ApJ, 352, L45 (zz24)
7. Bergeron, P., Wesemael, F., Lamontagne, R., Fontaine, G., Saffer, R. A., & Allard, N. 1995, ApJ, 449, 258
8. Bergeron, P.et al. 1993, AJ, 106, 1987
9. Billères, M. 2000, Ph.D. thesis, Université de Montréal
10. Bond, H. E., & Ciardullo, R. 1993, in White Dwarfs: Advances in Observations and Theory, NATO ASI Series, ed. M. A. Barstow (Dordretch: Kluwer),491 (gw5)
11. Bond, H. E., & Grauer, A. D. 1987, ApJ, 321, L123 (gw2)
12. Bond, H. E., Grauer, A. D., Green, R. F., & Liebert, J. 1984, ApJ, 279, 751 (gw10)
13. Bond, H. E., & Meakes, M. G. 1990, AJ, 100, 788 (gw3)
14. Bond, H. E.et al. 1996, AJ, 112, 2699
15. Bradley, P. A. 1998, ApJS, 116, 307
16. _. 2001, ApJ, 552, 326
17. _. 2006, Mem. Soc. Astron. Italiana, 77, 437
18. Bradley, P. A., & Kleinman, S. J. 1997, in White Dwarfs, ed. J. Isern, M. Hernanz, & E. Garcia-Berro (Dordretch: Kluwer), 445
19. Bradley, P. A., & Winget, D. E. 1994, ApJ, 421, 236
20. Bradley, P. A., Winget, D. E., & Wood, M. A. 1993, ApJ, 406, 661
21. Brassard, P., & Fontaine, G. 1997, in White Dwarfs, ed. J. Isern, M. Hernanz, & E. Garcia-Berro (Dordretch: Kluwer), 451
22. _. 1999, in ASP Conf. Ser. 173, Theory and Tests of Convection in Stellar Structure, ed. A. Giminez, E. F. Guinan, & B. Montesinos (San Francisco: ASP), 329
23. _. 2005, ApJ, 622, 572
24. _. 2006, Mem. Soc. Astron. Italiana, 77, 439
25. Brassard, P., Fontaine, G., Billères, M., Charpinet, S., Liebert, J., & Saffer, R. A. 2001, ApJ, 563, 1013
26. Brassard, P., Fontaine, G., & Wesemael, F. 1995, ApJS, 96, 545
27. Brassard, P., Fontaine, G., Wesemael, F., & Hansen, C. J. 1992a, ApJS, 80, 369
28. Brassard, P., Fontaine, G., Wesemael, F., Kawaler, S. D., & Tassoul, M. 1991, ApJ, 367, 601
29. Brassard, P., Fontaine, G., Wesemael, F., & Talon, A. 1993, in White Dwarfs: Advances in Observations and Theory, NATO ASI Series, ed. M. A. Barstow (Dordretch: Kluwer), 485
30. Brassard, P., Fontaine, G., Wesemael, F., & Tassoul, M. 1992c, ApJS, 81, 747
31. Brassard, P., Pelletier, C., Fontaine, G., & Wesemael, F. 1992b, ApJS, 80, 725
32. Brassard, P., Wesemael, F., & Fontaine, G. 1989, in IAU Colloq. 114, White Dwarfs, ed. G. Wegner (Berlin: Springer), 258
33. Brickhill, A. J. 1983, MNRAS, 204, 537
34. _. 1990, MNRAS, 246, 510
35. _. 1991a, MNRAS, 251, 673
36. _. 1991b, MNRAS, 252, 334
37. _. 1992a, MNRAS, 259, 519
38. _. 1992b, MNRAS, 259, 529
39. Castanheira, B. G., et al. 2006, A&A, 450, 227
40. _. 2007, A&A, 462, 989
41. Chanmugan, G. 1972, Nature, 236, 83
42. Charpinet, S., Fontaine, G., & Brassard, P. 2003, in White Dwarfs, Proc. 13th European Workshop on White Dwarfs, ed. D. de Martino, R. Silvotti, J.-E. Solheim, & R. Kalytis (NATO Sci. Ser. II, 105; Dordretch: Kluwer), 69
43. Charpinet, S., Fontaine, G., Brassard, P., Billères, M., Green, E. M., & Chayer, P. 2005b, A&A, 443, 251
44. Charpinet, S., Fontaine, G., Brassard, P., Chayer, P., Rogers, F. J., Iglesias, C. A., & B., Dorman 1997b, ApJ, 483, L123
45. Charpinet, S., Fontaine, G., Brassard, P., & Dorman, B. 1997a, ApJ, 489, L149
46. Charpinet, S., Fontaine, G., Brassard, P., Green, E. M., & Chayer, P. 2005a, A&A, 437, 575
47. Ciardullo, R., & Bond, H. E. 1996, AJ, 111, 2332 (gw1)
48. Clemens, J. C., van Kerkwijk, M. H., & Wu, Y. 2000, MNRAS, 314, 220
49. Córsico, A. H., & Althaus, L. G. 2006, A&A, 454, 863
50. Córsico, A. H., Althaus, L. G., & Miller Bertolami, M. M. 2006, A&A, 458, 259
51. Córsico, A. H., Althaus, L. G., Miller Bertolami, M. M., & Werner, K. 2007, A&A, 461, 1095
52. Córsico, A. H., Benvenuto, O. G., Althaus, L. G., & Serenelli, A. M. 2002, MNRAS, 332, 392
53. Costa, J. E. S., Kepler, S. O., & Winget, D. E. 1999, ApJ, 522, 973
54. Cugier, H., & Daszyńska, J. 2001, A&A, 377, 113
55. Dehner, B. T., & Kawaler, S. D. 1995, ApJ, 445, L141
56. Dolez, N., & Vauclair, G. 1981, A&A, 102, 375
57. Dolez, N., Vauclair, G., & Chevreton, M. 1983, A&A, 121, L23 (zz11)
58. Dreizler, S., Werner, K., & Stahn, T. 2005, in ASP Conf. Ser. 334, fourteenth European Workshop on White Dwarfs, ed. D. Koester, & S. Moehler (San Francisco: ASP), 512
59. Dufour, P., Fontaine, G., Liebert, J., Schmidt, G. D., & Behara, N.. 2008a, ApJ, 683, 978
60. Dufour, P., Fontaine, G., Liebert, J., Williams, K., & Lai, D. K. 2008b, ApJL, 683, L167
61. Dufour, P., Liebert, J., Fontaine, G., & Behara, N. 2007, Nature, 450, 522
62. Dziembowski, W., & Koester, D. 1981, A&A, 97, 16
63. Fontaine, G., Bergeron, P., Billères, M., & Charpinet, S. 2003, ApJ, 591, 1184 (zz4)
64. Fontaine, G., Bergeron, P., Brassard, P., Billères, M., & Charpinet, S. 2001a, ApJ, 557, 792 (zz5)
65. Fontaine, G., Bergeron, P., Vauclair, G., Brassard, P., Wesemael, F., Kawaler, S. D., Grauer, A. D., & Winget, D. E. 1991, ApJ, 378, L49 (gw7)
66. Fontaine, G., & Brassard, P. 1994a, in ASP Conf. Ser. 57, Stellar and Circumstellar Astrophysics, ed. G. Wallerstein, & A. Noriega-Crespo (San Francisco: ASP), 195
67. _. 1994b, in IAU Colloq. 147, The Equation of State in Astrophysics, ed. G. Chabrier, & E. Schatzman (Cambridge: Cambridge University Press), 347
68. _. 2002, ApJ, 581, L33
69. Fontaine, G., Brassard, P., & Bergeron, P. 2001b, PASP, 113, 409
70. Fontaine, G., Brassard, P., Bergeron, P., & Wesemael, F. 1992, ApJ, 399, L91
71. _. 1996, ApJ, 469, 320
72. Fontaine, G., Brassard, P., Charpinet, S., Green, E. M., Chayer, P., Randall, S., & Dorman, B. 2006, in Proc. SOHO18/GONG2006/HELASI, Beyond the Spherical Sun (ESA SP-624; Noordwijk: ESA), 32
73. Fontaine, G., Brassard, P., & Dufour, P. 2008a, A&A, 483, L1
74. Fontaine, G., & Chayer, P. 2006, in ASP Conf. Ser. 348, Astrophysics in the Far Ultraviolet, ed. G. Sonneborn, H. W. Moos, & B.-G. Andersson (San Francisco: ASP), 181
75. Fontaine, G., McGraw, J. T., Coleman, L., Lacombe, P., Patterson, J., & Vauclair, G. 1980, ApJ, 239, 898 (zz30)
76. Fontaine, G., McGraw, J. T., Dearborn, D. S. P., Gustafson, J., & Lacombe, P. 1982, ApJ, 258, 651 (zz27)
77. Fontaine, G., & Van Horn, H. M. 1976, ApJS, 31, 467
78. Fontaine, G., & Wesemael, F. 1984, AJ, 89, 1728 (zz22)
79. Fontaine, G., et al., 2008b, in ASP Conf. Series 392, Hot Subdwarf Stars and Related Objects, ed. U. Heber, S. Jeffery, & R. Napiwotzki (San Francisco: ASP), 231
80. Fu, J.-N., et al. 2007, A&A, 467, 237
81. Gautschy, A. 1997, A&A, 320, 811
82. Gianninas, A., Bergeron, P., & Fontaine, G. 2005, ApJ, 631, 1100 (zz31)
83. _. 2006, AJ, 132, 831 (zz1)
84. _. 2007, in ASP Conf. Ser. 372, Proc. 15th European Workshop on White Dwarfs, ed. R. Napiwotzki, & M. Burleigh (San Franciso: ASP), 577
85. Giovannini, O., Kepler, S. O., Kanaan, A., Costa, A. F. M., & Koester, D. 1998, A&A, 329, L13 (zz28)
86. Goupil, M. J., Dziembowski, W. A., & Fontaine, G. 1998, Baltic Astronomy, 7, 21
87. Grauer, A. D., & Bond, H. E. 1984, ApJ, 277, 211 (gw9)
88. Grauer, A. D., Bond, H. E., Green, R. F., & Liebert, J. 1988, AJ, 95, 879 (vh4)
89. _. 1989, AJ, 98, 2221 (vh1)
90. Green, E. M., et al. 2003, ApJ, 583, L31
91. Handler, G. 1998, A&A, 339, 170
92. _. 2001, MNRAS, 323, L43 (vh7)
93. Handler, G., Metcalfe, T. S., & Wood, M. A. 2002, MNRAS, 335, 698
94. Herald, J. E., & Bianchi, L. 2004, ApJ, 609, 378
95. Herwig, F., Blöcker, T., Langer, N., & Driebe, T. 1999, A&A, 349, L5
96. Hesser, J. E., Lasker, B. M., & Neupert, H. E. 1976, ApJ, 209, 853 (zz2)
97. Itoh, N., et al. 2008, ApJ, 677, 495
98. Jones, P. W., Pesnell, W. D., Hansen, C. J., & Kawaler, S. D. 1989, ApJ, 336, 403
99. Jordan, S., Koester, D., Vauclair, G., Dolez, N., Heber, U., Hagen, H.-J., Reimers, D., Chevreton, M., & Dreizler, S. 1998, A&A, 330, 277 (zz10)
100. Kanaan, A., Kepler, S. O., Giovannini, O., & Diaz, M. 1992, ApJ, 390, L89 (zz19)
101. Kawaler, S. D., & Bradley, P. A. 1994, ApJ, 427, 415
102. Kawaler, S. D., Sekii, T., & Gough, D. 1999, ApJ, 516, 349
103. Kawaler, S. D., et al. 1995, ApJ, 450, 350
104. _. 2004, A&A, 428, 969
105. Kepler, S. O., Robinson, E. L., Koester, D., Clemens, J. C., Nather, R. N., & Jiang, X. J. 2000, ApJ, 539, 379
106. Kepler, S. O., et al. 1991, ApJ, 378, L45
107. _. 2005a, A&A, 442, 629
108. _. 2005b, ApJ, 634, 1311
109. Kilkenny, D., Koen, C., O'Donoghue, D., & Stobie, R. S. 1997, MNRAS, 285, 640
110. Kilkenny, D., et al. 1999, MNRAS, 303, 525
111. Kim, A., Montgomery, M. H., & Winget, D. E. 2006, in ASP Conf. Ser. 352, New Horizons in Astronomy: Frank N. Bash Symposium, ed. S. J. Kannappan, S. Redfield, J. E. Kossler-Silacci, M. Landriau, & N. Drory (San Franciso: ASP), 253
112. Koen, C., O'Donoghue, Stobie, R. S., Kilkenny, D., & Ashley, R. 1995, MNRAS, 277, 913
113. Koesterke, L., Dreizler, S., & Rauch, T. 1998, A&A, 330, 1041
114. Koesterke, L., & Werner, K. 1998, ApJ, 500, L55
115. Landolt, A. U. 1968, ApJ, 153, 151 (zz7)
116. Lasker, B. M., & Hesser, J. E. 1971, ApJ, 163, L89 (zz3)
117. Ludwig, H.-G., Jordan, S., & Steffen, M. 1994, A&A, 284, 105
118. McCook, G. P., & Sion, E. M. 1999, ApJS, 121, 1
119. McGraw, J. T. 1976, ApJ, 210, L35 (zz6)
120. _. 1977, Ph.D. thesis, University of Texas at Austin
121. _. 1977, ApJ, 214, L123 (zz25)
122. _. 1979, ApJ, 229, 203
123. _. 1980, Space Sci. Rev., 27, 601
124. McGraw, J. T., Fontaine, G., Dearborn, D. S. P., Gustafson, J., Lacombe, P., & Starrfield, S. G. 1981, ApJ, 250, 349 (zz9)
125. McGraw, J. T., & Robinson, E. L. 1975, ApJ, 200, L89 (zz8)
126. McGraw, J. T., & Robinson, E. L. 1976, ApJ, 205, L55 (zz13)
127. McGraw, J. T., Starrfield, S. G., Liebert, J., & Green, R. F. 1979, in IAU Colloquium 53, White Dwarfs and Variable Degenerate Dwarfs, ed. H. M. Van Horn, & V. Weidemann (Rochester, NY: Univ. Rochester Press), 377 (gw4)
128. Metcalfe, T. S. 2001, Ph.D. thesis, University of Texas at Austin
129. Metcalfe, T. S., Montgomery, M. H., & Kanaan, A. 2004, ApJ, 605, L133
130. Metcalfe, T. S., Winget, D. E., & Charbonneau, P. 2001, ApJ, 557, 1021
131. Montgomery, M. H. 2005, ApJ, 633, 1142
132. Montgomery, M. H., Williams, K. A., Winget, D. E., Dufour, P., DeGennaro, S., & Liebert, J. 2008, ApJ, 678, L51
133. Mukadam, A. S., Kepler, S. O., Winget, D. E., & Bergeron, P. 2002, ApJ, 580, 429 (zz34)
134. Mukadam, A. S., et al. 2003, ApJ, 594, 961
135. _. 2004, ApJ, 607, 982
136. _. 2006, ApJ, 640, 956
137. Mullally, F., Thompson, S. E., Castenheira, B., Winget, D. E., Kepler, S. O., Eisenstein, D. J., Kleinman, S. J., & Nitta, A. 2005, ApJ, 625, 966
138. Mullally, F., Winget, D. E., Kepler, S. O. 2007, in ASP Conf. Ser. 372, Proc. 15th European Workshop on White Dwarfs, ed. R. Napiwotzki, & M. Burleigh (San Franciso: ASP), 363
139. Nagel, T., & Werner, K. 2004, A&A, 426, L45 (gw6)
140. Nitta, A., et al. 2007, Commun. Astroseismology, 150, 249
141. O'Brien, M. S., et al. 1998, ApJ, 495, 458
142. O'Donoghue, D., & Warner, B. 1982, MNRAS, 136, 293
143. _. 1987, MNRAS, 228, 949
144. Pech, D., & Vauclair, G. 2006, A&A, 453, 219
145. Pech, D., Vauclair, G., & Dolez, N. 2006, A&A, 446, 223
146. Pesnell, W. D. 1987, ApJ, 314, 598
147. Pfeiffer, B., et al. 1996, A&A, 314, 182
148. Quirion, P.-O., Fontaine, G., & Brassard, P. 2004, ApJ, 610, 436
149. _. 2005, A&A, 441, 231
150. _. 2007a, ApJS, 171, 219
151. _. 2007b, in ASP Conf. Ser. 372, Proc. 15th European Workshop on White Dwarfs, ed. R. Napiwotzki, & M. Burleigh (San Franciso: ASP), 649
152. Randall, S. K., Fontaine, G., Brassard, P., & Bergeron, P. 2005, ApJS, 161, 456
153. Randall, S. K., Fontaine, G., Charpinet, S., Lynas-Gray, A. E., Lopes, I. P., O'Toole, S. J., & Brassard, P. 2006, ApJ, 648, 637
154. Richer, H. B., & Ulrych, T. J. 1974, ApJ, 192, 719 (zz14)
155. Robinson, E. L. 1979, in IAU Colloquium 53, White Dwarfs and Variable Degenerate Dwarfs, ed. H. M. Van Horn, & V. Weidemann (Rochester, NY: U. Rochester Press), 343
156. Robinson, E. L., Kepler, S. O., & Nather, R. N. 1982, ApJ, 259, 219
157. Robinson, E. L., & McGraw, J. T. 1976, ApJ, 207, L37 (zz29)
158. Robinson, E. L., Stover, R. J., Nather, R. E., & McGraw, J. T. 1978, ApJ, 220, 614 (zz21)
159. Robinson, E. L., et al. 1995, ApJ, 438, 908
160. Saio, H. 1996, in ASP Conf. Ser. 96, Hydrogen-Deficient Stars, ed. C. S. Jeffery, U. Heber, & S. Moehler (San Francisco: ASP), 361
161. Saio, H., Winget, D. E., & Robinson, E. L. 1983, ApJ, 265, 982
162. Salaris, M., Dominguez, I., Garcia-Berro, E., Hernanz, M., Isern, J., & Mochkovitch, R. 1997, ApJ, 486, 413
163. Sauvenier-Goffin, E. 1949, Ann. d'Astrophys., 12, 39
164. Schmidt, G. D., & Grauer, A. D. 1997, ApJ, 488, 827
165. Schulov, O. S., & Kopatskaya, E. N. 1973, Astrofizika, 10, 117 (zz33)
166. Silvotti, R. 1996, A&A, 309, L23 (gw13)
167. Silvotti, R., Fontaine, G., Pavlov, M., Marsh, T., Dhillon, V., & Littlefair, S. 2007, in ASP Conf. Ser. 372, Proc. 15th European Workshop on White Dwarfs, ed. R. Napiwotzki, & M. Burleigh (San Franciso: ASP), 593
168. Silvotti, R., Pavlov, M., Fontaine, G., Marsh, T., & Dhillon, V. 2006, Mem. Soc. Astron. Italiana, 77, 486 (zz16)
169. Silvotti, R., Voss, B., Bruni, I., Koester, D., Reimers, D., Napiwotzki, R., & Homeier, D. 2005, A&A, 443, 195 (zz15)
170. Stahn, T., Dreizler, S., &Werner, K. 2005, in ASP Conf. Ser. 334, 14th European Workshop on White Dwarfs, ed. D. Koester, & S. Moehler (San Francisco: ASP), 545
171. Starrfield, S., Cox, A. N., Hodson, S. W., & Pesnell, W. D. 1982, in Pulsations in Classical and Cataclysmic Variables, ed. J. P. Cox, & C. J. Hansen (Boulder: Univ. Colorado), 78
172. _. 1983, ApJ, 268, L27
173. Starrfield, S., Cox, A. N., Kidman, R. B., & Pesnell, W. D. 1984, ApJ, 281, 800
174. _. 1985, ApJ, 293, L23
175. Solheim, J.-E., Vauclair, G., Mukadam, A. S., Janulis, R., & Dobrovolskas, V. 2007, A&A, 468, 1057 (gw11)
176. Stobie, R. S., Chen, A., O'Donoghue, D., & Kilkenny, D. 1993, MNRAS, 263, L13 (zz35)
177. Stobie, R. S., O'Donoghue, D., Ashley, R., Koen, C., Chen, A., & Kilkenny, D. 1995, MNRAS, 272, L21 (zz23)
178. Tassoul, M. 1980, ApJS, 43, 469
179. Tassoul, M., Fontaine, G., & Winget, D. E. 1990, ApJS, 72, 335
180. Tassoul, M., & Tassoul, J.-L. 1983, ApJ, 267, 334
181. Thompson, S. E. 2004, Ph.D. thesis, University of North Carolina at Chapel Hill
182. Townsend, R. H. D. 2002, MNRAS, 330, 855
183. van Zyl, L., Warner, B., O'Donoghue, D., Sullivan, D., Pritchard, J., & Kemp, J. 2000, Baltic Astron., 9, 231
184. van Kerkwijk, M. H., Clemens, J. C., & Wu, Y. 2000, MNRAS, 314, 209
185. Vauclair, G., Belmonte, J. A., Pfeiffer, B., Chevreton, M., Dolez, N., Motch, C., Werner, K., & Pakull, M. W. 1993, A&A, 267, L35 (gw12)
186. Vauclair, G., Chevreton, M., & Dolez, N. 1987, A&A, 175, L13 (zz32)
187. Vauclair, G., Dolez, N., & Chevreton, M. 1981, A&A, 103, L17 (zz18)
188. Vauclair, G., Dolez, N., Fu, J. N., & Chevreton, M. 1997, A&A, 322, 155 (zz12)
189. Vauclair, G., Dolez, N., Fu, J. N., Homeier, D., Roques, S., Chevreton, M., & Koester, D. 2000, A&A, 355, 291 (zz26)
190. Vauclair, G., Solheim, J.-E., & Ostensen, R. H. 2005, A&A, 433, 1097 (gw8)
191. Vauclair, G., et al. 2002, A&A, 381, 122
192. Voss, B., Koester, D., Ostensen, R., Kepler, S. O., Napiwotzki, R., Homeier, D., & Reimers, D. 2006, A&A, 450, 1061 (zz17)
193. Voss, B., Koester, D., Ostensen, R., Napiwotzki, R., Homeier, D., & Reimers, D. 2007, in ASP Conf. Ser. 372, Proc. 15th European Workshop on White Dwarfs, ed. R. Napiwotzki, & M. Burleigh (San Franciso: ASP), 583
194. Warner, B., & Robinson, E. L. 1972, Nature, 239, 2
195. Werner, K. 2001, in Encyclopedia of Astronomy and Astrophysics (London: IPP), 1992
196. Werner, K., & Herwig, F. 2006, PASP, 118, 183
197. Winget, D. E. 1981, Ph.D. thesis, University of Rochester
198. Winget, D. E., & Claver, C. F. 1988, IAU Circ., 4594 (vh2)
199. Winget, D. E., & Fontaine, G. 1982, in Pulsations in Classical and Cataclysmic Variables, ed. Cox, & C. J. Hansen (Boulder: Univ. Colorado), 142
200. Winget, D. E., Nather, R. E., & Hill, A. J. 1987, ApJ, 316, 305 (vh3)
201. Winget, D. E., Robinson, E. L., Nather, R. E., & Balachandran, S. 1984, ApJ, 279, L15 (vh6)
202. Winget, D. E., Robinson, E. L., Nather, R. E., & Fontaine, G. 1982b, ApJ, 262, L11 (vh5)
203. Winget, D. E., Sullivan, D. J., Metcalfe, T. S., Kawaler, S. D., & Montgomery, M. H. 2004, ApJ, 602, L109
204. Winget, D. E., Van Horn, H. M., Hansen, C. J., Fontaine, G., & Tassoul, M. 1982a, ApJ, 253, L29
205. Winget, D. E., Van Horn, H. M., Tassoul, M., Hansen, C. J., Fontaine, G. 1983, ApJ, 268, L33
206. Winget, D. E., et al. 1991, ApJ, 378, 326
207. _. 1994, ApJ, 430, 839
208. Wu, Y. 2001, MNRAS, 323, 248
209. Wu, Y., & Goldreich, P. 1999, ApJ, 519, 783