Knowledge (XXG)

Be star

Source đź“ť

2059: 27: 2070: 132:
With the understanding of the processes of emission line formation in the early 20th century it became clear that these lines in Be stars must come from circumstellar material ejected from the star helped by the rapid rotation of the star. All the observational characteristics of Be stars can now be
147:
Some Be stars exhibit spectral features that are interpreted as a detached "shell" of gas surrounding the star, or more accurately a disc or ring. These shell features are thought to be caused when the disc of gas that is present around many Be stars is aligned edge on to us so that it creates very
133:
explained with a gaseous disk that is formed of material ejected from the star. The infrared excess and the polarization result from the scattering of stellar light in the disk, while the line emission is formed by re-processing stellar ultraviolet light in the gaseous disc.
120:, the first star ever observed with emission lines. Many other bright stars were found to show similar spectra, although many of these are no longer considered to be classical Be stars. The brightest is 1910: 170:
when a transient or variable disk is observed. Be stars that show variability without clear indication of the mechanism are listed simply as BE in the
1942: 516: 171: 1917: 1236: 85:
lines in emission. These are sometimes referred to as classical Be stars. The emission lines may be present only at certain times.
1629: 1543: 1922: 1559: 578: 1969: 1836: 539: 1952: 1903: 1878: 1171: 1256: 1893: 1873: 1957: 1888: 1858: 167: 157: 1964: 1841: 1818: 1400: 849: 844: 839: 834: 829: 824: 2105: 1107: 981: 616: 1634: 1303: 1883: 1433: 1343: 1285: 1211: 782: 708: 175: 161: 658: 2044: 2024: 1796: 1791: 1584: 1533: 1338: 1328: 1001: 799: 767: 641: 42: 88:
Although the Be type spectrum is most strongly produced in class B stars, it is also detected in O and A
1898: 1868: 1863: 1853: 1781: 1569: 735: 92:, and these are sometimes included under the "Be star" banner. Be stars are primarily considered to be 1016: 2039: 1937: 1927: 1776: 1744: 1538: 1333: 1318: 631: 470: 433: 392: 351: 312: 257: 207: 81:. It is preferred to restrict usage of the term Be star to non-supergiant stars showing one or more 878: 2095: 1639: 1499: 1482: 1153: 1055: 2034: 1995: 1947: 1932: 1846: 1786: 1709: 1619: 1589: 1579: 1523: 1445: 1136: 772: 571: 281: 247: 2100: 1985: 1470: 1410: 1383: 1363: 1163: 947: 935: 762: 742: 696: 678: 646: 512: 301:"Schreiben des Herrn Prof.Secchi, Dir. Der Sternwarte des Collegio Romano, an den Herausgeber" 273: 113: 70: 1813: 1766: 1716: 1704: 1682: 1677: 1604: 1564: 1511: 1293: 1216: 1191: 1085: 1006: 730: 691: 504: 478: 441: 400: 359: 320: 265: 261: 215: 166:
Be stars are often visually and spectroscopically variable. Be stars can be classified as
2000: 1803: 1672: 1516: 1487: 1428: 1423: 1298: 1026: 991: 925: 871: 866: 811: 621: 474: 437: 396: 355: 316: 238:
Rivinius, Thomas; Carciofi, Alex C.; Martayan, Christophe (2013). "Classical Be stars".
211: 2062: 1828: 1667: 1494: 1465: 1440: 1373: 1062: 930: 816: 718: 608: 598: 2089: 2014: 1808: 1771: 1739: 1614: 1323: 1146: 1117: 1095: 713: 686: 663: 564: 461:
Struve, Otto (1931). "On the Origin of Bright Lines in Spectra of Stars of Class B".
285: 117: 93: 82: 74: 2074: 1749: 1699: 1694: 1594: 1477: 1460: 1418: 1378: 1313: 1196: 1141: 1122: 1102: 1080: 1072: 915: 908: 747: 668: 651: 1990: 1689: 1662: 1654: 1644: 1624: 1599: 1528: 1450: 1206: 1181: 1176: 1090: 1050: 1011: 976: 959: 954: 626: 533: 65:
Many stars have B-type spectra and show hydrogen emission lines, including many
54: 1574: 1271: 1244: 1221: 1201: 1186: 1038: 942: 920: 898: 893: 757: 508: 269: 142: 101: 89: 66: 50: 324: 277: 1761: 1609: 1393: 1358: 1353: 1348: 1308: 1261: 1251: 1045: 1021: 996: 903: 854: 787: 777: 752: 725: 701: 636: 174:. Some of these are thought to be pulsating stars and are sometimes called 78: 20: 1754: 1455: 1129: 888: 861: 121: 97: 31: 2029: 1504: 1266: 986: 969: 964: 883: 2019: 2007: 1226: 1112: 45:
and emission lines. A narrower definition, sometimes referred to as
422:"The influence of rotation and stellar winds upon the Be phenomenon" 300: 26: 2069: 482: 446: 421: 405: 380: 364: 339: 220: 195: 252: 25: 545: 381:"Evidence for mass loss at moderate to high velocity in Be stars" 1388: 1368: 587: 560: 1734: 53:
B star whose spectrum has, or had at some time, one or more
124:, although it was not recognised as a Be star until 1976. 556: 338:
Merrill, P. W.; Humason, M. L.; Burwell, C. G. (1925).
200:
Publications of the Astronomical Society of the Pacific
233: 231: 1978: 1827: 1725: 1653: 1552: 1409: 1284: 1162: 1071: 798: 677: 607: 340:"Discovery and Observations of Stars of Class Be" 572: 499:Slettebak, A. (1976). Slettebak, Arne (ed.). 8: 112:The first star recognized as a Be star was 804: 579: 565: 557: 194:Porter, John M.; Rivinius, Thomas (2003). 445: 404: 363: 251: 219: 148:narrow absorption lines in the spectrum. 379:Snow, T. P.; Marlborough, J. M. (1976). 41:are a heterogeneous set of stars with B 186: 240:The Astronomy and Astrophysics Review 7: 426:Astronomical Society of the Pacific 172:General Catalogue of Variable Stars 14: 546:"Be Star Spectra (BeSS) Database" 2068: 2058: 2057: 1: 1970:Timeline of stellar astronomy 534:Hot and Active Stars Research 61:Definition and classification 538:Article from Olivier Thizy: 1630:Hertzsprung–Russell diagram 168:Gamma Cassiopeiae variables 16:In astronomy, a B-type star 2122: 1544:Kelvin–Helmholtz mechanism 532:Philippe Stee's homepage: 158:Gamma Cassiopeiae variable 155: 140: 18: 2053: 807: 594: 509:10.1007/978-94-010-1498-4 305:Astronomische Nachrichten 270:10.1007/s00159-013-0069-0 1923:With multiple exoplanets 325:10.1002/asna.18670680405 176:Lambda Eridani variables 19:Not to be confused with 709:Asymptotic giant branch 262:2013A&ARv..21...69R 162:Lambda Eridani variable 96:stars, but a number of 34:, the brightest Be star 2045:Tidal disruption event 1534:Circumstellar envelope 768:Luminous blue variable 35: 1570:Effective temperature 463:Astrophysical Journal 385:Astrophysical Journal 344:Astrophysical Journal 55:Balmer emission lines 29: 2040:Planet-hosting stars 1918:With resolved images 1889:Historical brightest 1819:Photometric-standard 1745:Solar radio emission 1539:Eddington luminosity 1319:Triple-alpha process 1257:Thorne–Żytkow object 632:Young stellar object 196:"Classical Be Stars" 73:, mass-transferring 1864:Highest temperature 1635:Color–color diagram 1500:Protoplanetary disk 1304:Proton–proton chain 982:Chemically peculiar 475:1931ApJ....73...94S 438:1975PASP...87..777M 397:1976ApJ...203L..87S 356:1925ApJ....61..389M 317:1866AN.....68...63S 299:Secchi, A. (1867). 212:2003PASP..115.1153P 116:, observed 1866 by 104:are also included. 1869:Lowest temperature 1620:Photometric system 1590:Absolute magnitude 1524:Circumstellar dust 1137:Stellar black hole 773:Stellar population 659:Herbig–Haro object 501:Be and Shell Stars 420:Massa, D. (1975). 71:Herbig Ae/Be stars 47:classical Be stars 36: 2083: 2082: 1986:Substellar object 1965:Planetary nebulae 1384:Luminous red nova 1294:Deuterium burning 1280: 1279: 763:Instability strip 743:Wolf-Rayet nebula 697:Horizontal branch 642:Pre-main-sequence 518:978-94-010-1498-4 114:Gamma Cassiopeiae 2113: 2075:Stars portal 2073: 2072: 2061: 2060: 1717:Planetary system 1640:Strömgren sphere 1512:Asteroseismology 1233:Black hole star 805: 731:Planetary nebula 692:Red-giant branch 581: 574: 567: 558: 553: 522: 487: 486: 458: 452: 451: 449: 417: 411: 410: 408: 376: 370: 369: 367: 335: 329: 328: 296: 290: 289: 255: 235: 226: 225: 223: 191: 2121: 2120: 2116: 2115: 2114: 2112: 2111: 2110: 2106:1866 in science 2086: 2085: 2084: 2079: 2067: 2049: 1974: 1943:Milky Way novae 1879:Smallest volume 1823: 1804:Radial velocity 1727: 1721: 1673:Common envelope 1649: 1548: 1517:Helioseismology 1488:Bipolar outflow 1429:Microturbulence 1424:Convection zone 1405: 1299:Lithium burning 1286:Nucleosynthesis 1276: 1158: 1067: 794: 673: 622:Molecular cloud 603: 590: 585: 550:basebe.obspm.fr 544: 529: 519: 498: 495: 493:Further reading 490: 460: 459: 455: 419: 418: 414: 378: 377: 373: 337: 336: 332: 298: 297: 293: 237: 236: 229: 193: 192: 188: 184: 164: 156:Main articles: 154: 145: 139: 130: 110: 63: 24: 17: 12: 11: 5: 2119: 2117: 2109: 2108: 2103: 2098: 2088: 2087: 2081: 2080: 2078: 2077: 2065: 2054: 2051: 2050: 2048: 2047: 2042: 2037: 2032: 2027: 2022: 2017: 2012: 2011: 2010: 2005: 2004: 2003: 1998: 1982: 1980: 1976: 1975: 1973: 1972: 1967: 1962: 1961: 1960: 1955: 1945: 1940: 1935: 1930: 1925: 1920: 1915: 1914: 1913: 1908: 1907: 1906: 1896: 1891: 1886: 1881: 1876: 1874:Largest volume 1871: 1866: 1861: 1851: 1850: 1849: 1844: 1833: 1831: 1825: 1824: 1822: 1821: 1816: 1811: 1806: 1801: 1800: 1799: 1794: 1789: 1779: 1774: 1769: 1764: 1759: 1758: 1757: 1752: 1747: 1742: 1731: 1729: 1723: 1722: 1720: 1719: 1714: 1713: 1712: 1707: 1702: 1692: 1687: 1686: 1685: 1680: 1675: 1670: 1659: 1657: 1651: 1650: 1648: 1647: 1642: 1637: 1632: 1627: 1622: 1617: 1612: 1607: 1602: 1597: 1592: 1587: 1585:Magnetic field 1582: 1577: 1572: 1567: 1562: 1556: 1554: 1550: 1549: 1547: 1546: 1541: 1536: 1531: 1526: 1521: 1520: 1519: 1509: 1508: 1507: 1502: 1495:Accretion disk 1492: 1491: 1490: 1485: 1475: 1474: 1473: 1471:AlfvĂ©n surface 1468: 1466:Stellar corona 1463: 1458: 1453: 1443: 1441:Radiation zone 1438: 1437: 1436: 1431: 1421: 1415: 1413: 1407: 1406: 1404: 1403: 1398: 1397: 1396: 1391: 1386: 1381: 1376: 1366: 1361: 1356: 1351: 1346: 1341: 1336: 1331: 1326: 1321: 1316: 1311: 1306: 1301: 1296: 1290: 1288: 1282: 1281: 1278: 1277: 1275: 1274: 1269: 1264: 1259: 1254: 1249: 1248: 1247: 1242: 1239: 1231: 1230: 1229: 1224: 1219: 1214: 1209: 1204: 1199: 1194: 1189: 1179: 1174: 1168: 1166: 1160: 1159: 1157: 1156: 1151: 1150: 1149: 1139: 1134: 1133: 1132: 1127: 1126: 1125: 1120: 1110: 1100: 1099: 1098: 1088: 1083: 1077: 1075: 1069: 1068: 1066: 1065: 1063:Blue straggler 1060: 1059: 1058: 1048: 1043: 1042: 1041: 1031: 1030: 1029: 1024: 1019: 1014: 1009: 1004: 999: 994: 989: 979: 974: 973: 972: 967: 962: 952: 951: 950: 940: 939: 938: 933: 928: 918: 913: 912: 911: 906: 901: 891: 886: 881: 876: 875: 874: 869: 859: 858: 857: 852: 847: 842: 837: 832: 827: 821:Main sequence 819: 814: 808: 802: 800:Classification 796: 795: 793: 792: 791: 790: 785: 775: 770: 765: 760: 755: 750: 745: 740: 739: 738: 736:Protoplanetary 728: 723: 722: 721: 716: 706: 705: 704: 694: 689: 683: 681: 675: 674: 672: 671: 666: 661: 656: 655: 654: 649: 644: 639: 629: 624: 619: 613: 611: 605: 604: 602: 601: 595: 592: 591: 586: 584: 583: 576: 569: 561: 555: 554: 542: 536: 528: 527:External links 525: 524: 523: 517: 494: 491: 489: 488: 483:10.1086/143298 453: 447:10.1086/129842 412: 406:10.1086/182025 371: 365:10.1086/142899 330: 291: 227: 221:10.1086/378307 185: 183: 180: 153: 150: 141:Main article: 138: 135: 129: 126: 109: 106: 75:binary systems 62: 59: 43:spectral types 15: 13: 10: 9: 6: 4: 3: 2: 2118: 2107: 2104: 2102: 2099: 2097: 2094: 2093: 2091: 2076: 2071: 2066: 2064: 2056: 2055: 2052: 2046: 2043: 2041: 2038: 2036: 2035:Intergalactic 2033: 2031: 2028: 2026: 2023: 2021: 2018: 2016: 2015:Galactic year 2013: 2009: 2006: 2002: 1999: 1997: 1994: 1993: 1992: 1989: 1988: 1987: 1984: 1983: 1981: 1977: 1971: 1968: 1966: 1963: 1959: 1956: 1954: 1951: 1950: 1949: 1946: 1944: 1941: 1939: 1936: 1934: 1931: 1929: 1926: 1924: 1921: 1919: 1916: 1912: 1909: 1905: 1902: 1901: 1900: 1897: 1895: 1894:Most luminous 1892: 1890: 1887: 1885: 1882: 1880: 1877: 1875: 1872: 1870: 1867: 1865: 1862: 1860: 1857: 1856: 1855: 1852: 1848: 1845: 1843: 1840: 1839: 1838: 1835: 1834: 1832: 1830: 1826: 1820: 1817: 1815: 1812: 1810: 1809:Proper motion 1807: 1805: 1802: 1798: 1795: 1793: 1790: 1788: 1785: 1784: 1783: 1780: 1778: 1775: 1773: 1772:Constellation 1770: 1768: 1765: 1763: 1760: 1756: 1753: 1751: 1748: 1746: 1743: 1741: 1740:Solar eclipse 1738: 1737: 1736: 1733: 1732: 1730: 1726:Earth-centric 1724: 1718: 1715: 1711: 1708: 1706: 1703: 1701: 1698: 1697: 1696: 1693: 1691: 1688: 1684: 1681: 1679: 1676: 1674: 1671: 1669: 1666: 1665: 1664: 1661: 1660: 1658: 1656: 1652: 1646: 1643: 1641: 1638: 1636: 1633: 1631: 1628: 1626: 1623: 1621: 1618: 1616: 1613: 1611: 1608: 1606: 1603: 1601: 1598: 1596: 1593: 1591: 1588: 1586: 1583: 1581: 1578: 1576: 1573: 1571: 1568: 1566: 1563: 1561: 1558: 1557: 1555: 1551: 1545: 1542: 1540: 1537: 1535: 1532: 1530: 1527: 1525: 1522: 1518: 1515: 1514: 1513: 1510: 1506: 1503: 1501: 1498: 1497: 1496: 1493: 1489: 1486: 1484: 1481: 1480: 1479: 1476: 1472: 1469: 1467: 1464: 1462: 1459: 1457: 1454: 1452: 1449: 1448: 1447: 1444: 1442: 1439: 1435: 1432: 1430: 1427: 1426: 1425: 1422: 1420: 1417: 1416: 1414: 1412: 1408: 1402: 1399: 1395: 1392: 1390: 1387: 1385: 1382: 1380: 1377: 1375: 1372: 1371: 1370: 1367: 1365: 1362: 1360: 1357: 1355: 1352: 1350: 1347: 1345: 1342: 1340: 1337: 1335: 1332: 1330: 1327: 1325: 1324:Alpha process 1322: 1320: 1317: 1315: 1312: 1310: 1307: 1305: 1302: 1300: 1297: 1295: 1292: 1291: 1289: 1287: 1283: 1273: 1270: 1268: 1265: 1263: 1260: 1258: 1255: 1253: 1250: 1246: 1243: 1240: 1238: 1235: 1234: 1232: 1228: 1225: 1223: 1220: 1218: 1215: 1213: 1210: 1208: 1205: 1203: 1200: 1198: 1195: 1193: 1190: 1188: 1185: 1184: 1183: 1180: 1178: 1175: 1173: 1170: 1169: 1167: 1165: 1161: 1155: 1152: 1148: 1145: 1144: 1143: 1140: 1138: 1135: 1131: 1128: 1124: 1121: 1119: 1116: 1115: 1114: 1111: 1109: 1106: 1105: 1104: 1101: 1097: 1096:Helium planet 1094: 1093: 1092: 1089: 1087: 1086:Parker's star 1084: 1082: 1079: 1078: 1076: 1074: 1070: 1064: 1061: 1057: 1054: 1053: 1052: 1049: 1047: 1044: 1040: 1037: 1036: 1035: 1032: 1028: 1025: 1023: 1020: 1018: 1017:Lambda Boötis 1015: 1013: 1010: 1008: 1005: 1003: 1000: 998: 995: 993: 990: 988: 985: 984: 983: 980: 978: 975: 971: 968: 966: 963: 961: 958: 957: 956: 953: 949: 946: 945: 944: 941: 937: 934: 932: 929: 927: 924: 923: 922: 919: 917: 914: 910: 907: 905: 902: 900: 897: 896: 895: 892: 890: 887: 885: 882: 880: 877: 873: 870: 868: 865: 864: 863: 860: 856: 853: 851: 848: 846: 843: 841: 838: 836: 833: 831: 828: 826: 823: 822: 820: 818: 815: 813: 810: 809: 806: 803: 801: 797: 789: 786: 784: 783:Superluminous 781: 780: 779: 776: 774: 771: 769: 766: 764: 761: 759: 756: 754: 751: 749: 746: 744: 741: 737: 734: 733: 732: 729: 727: 724: 720: 717: 715: 712: 711: 710: 707: 703: 700: 699: 698: 695: 693: 690: 688: 687:Main sequence 685: 684: 682: 680: 676: 670: 667: 665: 664:Hayashi track 662: 660: 657: 653: 650: 648: 645: 643: 640: 638: 635: 634: 633: 630: 628: 625: 623: 620: 618: 615: 614: 612: 610: 606: 600: 597: 596: 593: 589: 582: 577: 575: 570: 568: 563: 562: 559: 551: 547: 543: 541: 537: 535: 531: 530: 526: 520: 514: 510: 506: 502: 497: 496: 492: 484: 480: 476: 472: 468: 464: 457: 454: 448: 443: 439: 435: 431: 427: 423: 416: 413: 407: 402: 398: 394: 390: 386: 382: 375: 372: 366: 361: 357: 353: 349: 345: 341: 334: 331: 326: 322: 318: 314: 310: 306: 302: 295: 292: 287: 283: 279: 275: 271: 267: 263: 259: 254: 249: 245: 241: 234: 232: 228: 222: 217: 213: 209: 206:(812): 1153. 205: 201: 197: 190: 187: 181: 179: 177: 173: 169: 163: 159: 151: 149: 144: 136: 134: 127: 125: 123: 119: 118:Angelo Secchi 115: 107: 105: 103: 99: 95: 94:main sequence 91: 86: 84: 83:Balmer series 80: 76: 72: 68: 60: 58: 56: 52: 48: 44: 40: 33: 30:Depiction of 28: 22: 1938:White dwarfs 1928:Brown dwarfs 1911:Most distant 1859:Most massive 1837:Proper names 1797:Photographic 1750:Solar System 1728:observations 1655:Star systems 1478:Stellar wind 1461:Chromosphere 1434:Oscillations 1314:Helium flash 1164:Hypothetical 1142:X-ray binary 1081:Compact star 1033: 916:Bright giant 669:Henyey track 647:Herbig Ae/Be 549: 500: 466: 462: 456: 429: 425: 415: 388: 384: 374: 347: 343: 333: 311:(4): 63–64. 308: 304: 294: 243: 239: 203: 199: 189: 165: 146: 131: 111: 87: 64: 46: 38: 37: 1991:Brown dwarf 1767:Circumpolar 1645:Kraft break 1625:Color index 1600:Metallicity 1560:Designation 1529:Cosmic dust 1451:Photosphere 1217:Dark-energy 1192:Electroweak 1177:Black dwarf 1108:Radio-quiet 1091:White dwarf 977:White dwarf 627:Bok globule 152:Variability 137:Shell stars 102:giant stars 90:shell stars 67:supergiants 49:, is a non- 2096:Star types 2090:Categories 1953:Candidates 1948:Supernovae 1933:Red dwarfs 1792:Extinction 1580:Kinematics 1575:Luminosity 1553:Properties 1446:Atmosphere 1344:Si burning 1334:Ne burning 1272:White hole 1245:Quasi-star 1172:Blue dwarf 1027:Technetium 943:Hypergiant 921:Supergiant 182:References 143:Shell star 51:supergiant 1884:Brightest 1782:Magnitude 1762:Pole star 1683:Symbiotic 1678:Eclipsing 1610:Starlight 1411:Structure 1401:Supernova 1394:Micronova 1389:Recurrent 1374:Symbiotic 1359:p-process 1354:r-process 1349:s-process 1339:O burning 1329:C burning 1309:CNO cycle 1252:Gravastar 788:Hypernova 778:Supernova 753:Dredge-up 726:Blue loop 719:super-AGB 702:Red clump 679:Evolution 637:Protostar 617:Accretion 609:Formation 286:118652497 278:0935-4956 253:1310.3962 246:(1): 69. 108:Discovery 98:subgiants 2101:Be stars 2063:Category 1958:Remnants 1854:Extremes 1814:Parallax 1787:Apparent 1777:Asterism 1755:Sunlight 1705:Globular 1690:Multiple 1615:Variable 1605:Rotation 1565:Dynamics 1456:Starspot 1130:Magnetar 1073:Remnants 889:Subgiant 862:Subdwarf 714:post-AGB 540:Be Stars 122:Achernar 39:Be stars 32:Achernar 2030:Gravity 1979:Related 1899:Nearest 1847:Chinese 1695:Cluster 1668:Contact 1505:Proplyd 1379:Remnant 1267:Blitzar 1241:Hawking 1197:Strange 1147:Burster 1103:Neutron 1056:Extreme 1007:He-weak 652:T Tauri 471:Bibcode 434:Bibcode 432:: 777. 393:Bibcode 391:: L87. 352:Bibcode 350:: 389. 313:Bibcode 258:Bibcode 208:Bibcode 79:B stars 2020:Galaxy 2008:Planet 1996:Desert 1904:bright 1842:Arabic 1663:Binary 1483:Bubble 1207:Planck 1182:Exotic 1118:Binary 1113:Pulsar 1051:Helium 1012:Barium 955:Carbon 948:Yellow 936:Yellow 909:Yellow 748:PG1159 515:  469:: 94. 284:  276:  77:, and 21:B star 2025:Guest 1829:Lists 1710:Super 1364:Fusor 1237:Black 1222:Quark 1202:Preon 1187:Boson 1123:X-ray 1039:Shell 992:Ap/Bp 894:Giant 812:Early 758:OH/IR 588:Stars 282:S2CID 248:arXiv 128:Model 1700:Open 1595:Mass 1419:Core 1369:Nova 1262:Iron 1212:Dark 1022:Lead 1002:HgMn 997:CEMP 926:Blue 899:Blue 817:Late 599:List 513:ISBN 274:ISSN 160:and 100:and 2001:Sub 1735:Sun 1154:SGR 931:Red 904:Red 505:doi 479:doi 442:doi 401:doi 389:203 360:doi 321:doi 266:doi 216:doi 204:115 2092:: 1034:Be 987:Am 970:CH 965:CN 884:OB 879:WR 548:. 511:. 503:. 477:. 467:73 465:. 440:. 430:87 428:. 424:. 399:. 387:. 383:. 358:. 348:61 346:. 342:. 319:. 309:68 307:. 303:. 280:. 272:. 264:. 256:. 244:21 242:. 230:^ 214:. 202:. 198:. 178:. 69:, 57:. 1227:Q 1046:B 960:S 872:B 867:O 855:M 850:K 845:G 840:F 835:A 830:B 825:O 580:e 573:t 566:v 552:. 521:. 507:: 485:. 481:: 473:: 450:. 444:: 436:: 409:. 403:: 395:: 368:. 362:: 354:: 327:. 323:: 315:: 288:. 268:: 260:: 250:: 224:. 218:: 210:: 23:.

Index

B star

Achernar
spectral types
supergiant
Balmer emission lines
supergiants
Herbig Ae/Be stars
binary systems
B stars
Balmer series
shell stars
main sequence
subgiants
giant stars
Gamma Cassiopeiae
Angelo Secchi
Achernar
Shell star
Gamma Cassiopeiae variable
Lambda Eridani variable
Gamma Cassiopeiae variables
General Catalogue of Variable Stars
Lambda Eridani variables
"Classical Be Stars"
Bibcode
2003PASP..115.1153P
doi
10.1086/378307

Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.

↑