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Paul Ledoux

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shows that material is unstable to convection if the radiation field alone would establish a steeper temperature gradient steeper than the adiabatic (or isentropic) temperature gradient. However, Ledoux showed that a composition gradient stabilises or destabilises the material against convection. In
421: 225:, Ledoux's name is now associated with the criterion under which material in a star becomes unstable to convection in the presence of a gradient of chemical composition. In homogeneous material, the 202: 186: 533: 462: 255: 54: 210: 135: 314:. Encyclopedia of Physics / Handbuch der Physik. Vol. 11 / 51. Berlin, Heidelberg: Springer Berlin Heidelberg. pp. 353–604. 552: 234:; in convectively-unstable regions that are stabilised, one expects double-diffusive mixing, known in stellar astrophysics as 335: 526: 455: 567: 572: 519: 448: 377:
Ledoux, P. (1947), "Stellar Models with Convection and with Discontinuity of the Mean Molecular Weight",
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convectively-stable regions destabilised by the composition gradient, one expects
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best known for his work on stellar stability and variability. With
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Astrophysics II: Stellar Structure / Astrophysik II: Sternaufbau
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Hoyle, F. (1972), "P. Ledoux received the Eddington Medal.",
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Quarterly Journal of the Royal Astronomical Society
256:"Fondation Francqui - les Colloques Internationaux" 544: 280:Swings, J. P. (1989), "Obituary - Ledoux Paul", 305: 527: 456: 201:in 1972 for investigations into problems of 213:of the French Academy of Sciences in 1976. 534: 520: 463: 449: 29: 400: 193:for Exact Sciences, and was awarded the 545: 376: 279: 350: 472: 415: 216: 13: 306:Ledoux, P.; Walraven, Th. (1958). 16:Belgian astrophysicist (1914–1988) 14: 584: 553:20th-century Belgian astronomers 490: 483: 477: 419: 370: 344: 299: 282:Astrophysics and Space Science 273: 248: 1: 241: 506:. You can help Knowledge by 435:. You can help Knowledge by 7: 328:10.1007/978-3-642-45908-5_6 10: 589: 471: 414: 199:Royal Astronomical Society 568:European astronomer stubs 380:The Astrophysical Journal 172: 162: 152: 145: 116: 102: 92: 84: 65: 40: 28: 21: 573:Belgian scientist stubs 294:1989Ap&SS.155..179S 227:Schwarzschild criterion 431:–related article is a 498:This article about a 209:. He was awarded the 223:stellar astrophysics 393:1947ApJ...105..305L 365:1972QJRAS..13..485H 320:1958HDP....51..353L 232:thermohaline mixing 167:University of Liège 97:University of Liège 515: 514: 444: 443: 337:978-3-642-45910-8 203:stellar stability 187:Theodore Walraven 176: 175: 147:Scientific career 580: 536: 529: 522: 494: 489: 488: 487: 481: 473: 465: 458: 451: 423: 416: 406: 405: 404: 374: 368: 367: 348: 342: 341: 308:"Variable Stars" 303: 297: 296: 277: 271: 270: 268: 267: 258:. Archived from 252: 217:Ledoux criterion 109:Ledoux criterion 72: 50: 48: 33: 19: 18: 588: 587: 583: 582: 581: 579: 578: 577: 543: 542: 541: 540: 502:scientist is a 482: 476: 470: 469: 412: 410: 409: 375: 371: 349: 345: 338: 304: 300: 278: 274: 265: 263: 254: 253: 249: 244: 219: 195:Eddington Medal 141: 130:Eddington Medal 112: 93:Alma mater 80: 74: 70: 61: 52: 46: 44: 36: 24: 17: 12: 11: 5: 586: 576: 575: 570: 565: 560: 555: 539: 538: 531: 524: 516: 513: 512: 495: 468: 467: 460: 453: 445: 442: 441: 427:This European 424: 408: 407: 402:10.1086/144905 369: 343: 336: 298: 272: 246: 245: 243: 240: 236:semiconvection 218: 215: 207:variable stars 191:Francqui Prize 183:astrophysicist 174: 173: 170: 169: 164: 160: 159: 154: 150: 149: 143: 142: 140: 139: 133: 127: 124:Francqui Prize 120: 118: 114: 113: 111: 110: 106: 104: 103:Known for 100: 99: 94: 90: 89: 86: 82: 81: 75: 73:(aged 74) 69:6 October 1988 67: 63: 62: 53: 42: 38: 37: 34: 26: 25: 22: 15: 9: 6: 4: 3: 2: 585: 574: 571: 569: 566: 564: 561: 559: 556: 554: 551: 550: 548: 537: 532: 530: 525: 523: 518: 517: 511: 509: 505: 501: 496: 493: 486: 480: 475: 474: 466: 461: 459: 454: 452: 447: 446: 440: 438: 434: 430: 425: 422: 418: 417: 413: 403: 398: 394: 390: 386: 382: 381: 373: 366: 362: 358: 354: 347: 339: 333: 329: 325: 321: 317: 313: 309: 302: 295: 291: 287: 283: 276: 262:on 2016-03-05 261: 257: 251: 247: 239: 237: 233: 228: 224: 214: 212: 211:Janssen Medal 208: 204: 200: 196: 192: 188: 184: 180: 171: 168: 165: 161: 158: 155: 151: 148: 144: 137: 136:Janssen Medal 134: 131: 128: 125: 122: 121: 119: 115: 108: 107: 105: 101: 98: 95: 91: 87: 83: 78: 68: 64: 60: 56: 51:8 August 1914 43: 39: 32: 27: 20: 508:expanding it 497: 437:expanding it 426: 411: 384: 378: 372: 356: 352: 346: 311: 301: 285: 281: 275: 264:. Retrieved 260:the original 250: 235: 231: 220: 178: 177: 163:Institutions 157:Astrophysics 146: 71:(1988-10-06) 563:1988 deaths 558:1914 births 179:Paul Ledoux 85:Citizenship 35:Paul Ledoux 23:Paul Ledoux 547:Categories 429:astronomer 266:2016-09-29 242:References 47:1914-08-08 79:, Belgium 55:Forrières 500:Belgian 389:Bibcode 387:: 305, 361:Bibcode 359:: 348, 316:Bibcode 290:Bibcode 288:: 179, 197:of the 88:Belgian 59:Belgium 334:  153:Fields 138:(1976) 132:(1972) 126:(1964) 117:Awards 77:Liège 504:stub 433:stub 332:ISBN 205:and 66:Died 41:Born 397:doi 385:105 324:doi 286:155 221:In 549:: 395:, 383:, 357:13 355:, 330:. 322:. 310:. 284:, 238:. 57:, 535:e 528:t 521:v 510:. 464:e 457:t 450:v 439:. 399:: 391:: 363:: 340:. 326:: 318:: 292:: 269:. 49:) 45:(

Index


Forrières
Belgium
Liège
University of Liège
Francqui Prize
Eddington Medal
Janssen Medal
Astrophysics
University of Liège
astrophysicist
Theodore Walraven
Francqui Prize
Eddington Medal
Royal Astronomical Society
stellar stability
variable stars
Janssen Medal
stellar astrophysics
Schwarzschild criterion
"Fondation Francqui - les Colloques Internationaux"
the original
Bibcode
1989Ap&SS.155..179S
"Variable Stars"
Bibcode
1958HDP....51..353L
doi
10.1007/978-3-642-45908-5_6
ISBN

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