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CH star

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In 1975, Yasuho Yamashita noted that some higher temperature carbon stars displayed the typical spectral characteristics of a CH star, but did not have the same kinematic properties. That is, they did not have the higher space velocities characteristic of the older stellar population. These were
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poor and generally pretty middle-aged stars, and are under-luminous compared to the classical C–N carbon stars. The term 'CH star' was coined by
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McClure, Robert D.; Woodsworth, A. W. (April 1, 1990), "The binary nature of the barium and CH stars. III - Orbital parameters",
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systems, and it is reasonable to believe this is (or was) the case for all CH stars. Like
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which are characterized by the presence of exceedingly strong absorption bands due to CH (
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Sperauskas, J.; et al. (July 2016), "The Binary Nature of CH-Like Stars",
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The Analysis of Starlight: Two Centuries of Astronomical Spectroscopy
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in 1942 as a sub-type of the C classification, which he used for
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dubbed CH-like stars. Many CH stars are known to be members of
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(2014), 1838: 1270:Kelvin–Helmholtz mechanism 190:10.3847/0004-637X/826/1/85 1779: 533: 320: 169:The Astrophysical Journal 1649:With multiple exoplanets 435:Asymptotic giant branch 204:Goswami, Aruna (2005). 30:are particular type of 1771:Tidal disruption event 1260:Circumstellar envelope 494:Luminous blue variable 1296:Effective temperature 80:classical carbon star 1766:Planet-hosting stars 1644:With resolved images 1615:Historical brightest 1545:Photometric-standard 1471:Solar radio emission 1265:Eddington luminosity 1045:Triple-alpha process 983:Thorne–Żytkow object 358:Young stellar object 1590:Highest temperature 1361:Color–color diagram 1226:Protoplanetary disk 1030:Proton–proton chain 708:Chemically peculiar 232:2005MNRAS.359..531G 181:2016ApJ...826...85S 117:1990ApJ...352..709M 46:, meaning they are 1595:Lowest temperature 1346:Photometric system 1316:Absolute magnitude 1250:Circumstellar dust 863:Stellar black hole 499:Stellar population 385:Herbig–Haro object 60:Fraunhaufer G band 1809: 1808: 1712:Substellar object 1691:Planetary nebulae 1110:Luminous red nova 1020:Deuterium burning 1006: 1005: 489:Instability strip 469:Wolf-Rayet nebula 423:Horizontal branch 368:Pre-main-sequence 16:(Redirected from 1829: 1801:Stars portal 1799: 1798: 1787: 1786: 1443:Planetary system 1366:Strömgren sphere 1238:Asteroseismology 959:Black hole star 531: 457:Planetary nebula 418:Red-giant branch 307: 300: 293: 284: 279: 277: 275: 254: 253: 243: 225: 223:astro-ph/0507202 201: 195: 194: 192: 164: 158: 157: 137: 131: 130: 128: 100: 52:Philip C. Keenan 21: 1837: 1836: 1832: 1831: 1830: 1828: 1827: 1826: 1812: 1811: 1810: 1805: 1793: 1775: 1700: 1669:Milky Way novae 1605:Smallest volume 1549: 1530:Radial velocity 1453: 1447: 1399:Common envelope 1375: 1274: 1243:Helioseismology 1214:Bipolar outflow 1155:Microturbulence 1150:Convection zone 1131: 1025:Lithium burning 1012:Nucleosynthesis 1002: 884: 793: 520: 399: 348:Molecular cloud 329: 316: 311: 273: 271: 267:David Darling. 266: 263: 258: 257: 203: 202: 198: 166: 165: 161: 154: 139: 138: 134: 102: 101: 97: 92: 23: 22: 15: 12: 11: 5: 1835: 1833: 1825: 1824: 1814: 1813: 1807: 1806: 1804: 1803: 1791: 1780: 1777: 1776: 1774: 1773: 1768: 1763: 1758: 1753: 1748: 1743: 1738: 1737: 1736: 1731: 1730: 1729: 1724: 1708: 1706: 1702: 1701: 1699: 1698: 1693: 1688: 1687: 1686: 1681: 1671: 1666: 1661: 1656: 1651: 1646: 1641: 1640: 1639: 1634: 1633: 1632: 1622: 1617: 1612: 1607: 1602: 1600:Largest volume 1597: 1592: 1587: 1577: 1576: 1575: 1570: 1559: 1557: 1551: 1550: 1548: 1547: 1542: 1537: 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529: 527: 523: 515: 512: 510: 509:Superluminous 507: 506: 505: 502: 500: 497: 495: 492: 490: 487: 485: 482: 480: 477: 475: 472: 470: 467: 463: 460: 459: 458: 455: 453: 450: 446: 443: 441: 438: 437: 436: 433: 429: 426: 425: 424: 421: 419: 416: 414: 413:Main sequence 411: 410: 408: 406: 402: 396: 393: 391: 390:Hayashi track 388: 386: 383: 379: 376: 374: 371: 369: 366: 364: 361: 360: 359: 356: 354: 351: 349: 346: 344: 341: 340: 338: 336: 332: 326: 323: 322: 319: 315: 308: 303: 301: 296: 294: 289: 288: 285: 270: 265: 264: 260: 251: 247: 242: 237: 233: 229: 224: 219: 215: 211: 207: 200: 197: 191: 186: 182: 178: 174: 170: 163: 160: 155: 149: 145: 144: 136: 133: 127: 122: 118: 114: 110: 106: 99: 96: 89: 87: 85: 81: 77: 76:mass transfer 73: 69: 63: 61: 57: 53: 49: 45: 44:population II 41: 37: 33: 29: 19: 1822:Carbon stars 1664:White dwarfs 1654:Brown dwarfs 1637:Most distant 1585:Most massive 1563:Proper names 1523:Photographic 1476:Solar System 1454:observations 1381:Star systems 1204:Stellar wind 1187:Chromosphere 1160:Oscillations 1040:Helium flash 890:Hypothetical 868:X-ray binary 807:Compact star 695: 642:Bright giant 395:Henyey track 373:Herbig Ae/Be 272:. Retrieved 213: 209: 199: 172: 168: 162: 142: 135: 108: 104: 98: 72:Barium stars 64: 56:carbon stars 32:carbon stars 27: 26: 1717:Brown dwarf 1493:Circumpolar 1371:Kraft break 1351:Color index 1326:Metallicity 1286:Designation 1255:Cosmic dust 1177:Photosphere 943:Dark-energy 918:Electroweak 903:Black dwarf 834:Radio-quiet 817:White dwarf 703:White dwarf 353:Bok globule 111:: 709–723, 84:white dwarf 68:binary star 38:) in their 36:methylidyne 1679:Candidates 1674:Supernovae 1659:Red dwarfs 1518:Extinction 1306:Kinematics 1301:Luminosity 1279:Properties 1172:Atmosphere 1070:Si burning 1060:Ne burning 998:White hole 971:Quasi-star 898:Blue dwarf 753:Technetium 669:Hypergiant 647:Supergiant 90:References 1610:Brightest 1508:Magnitude 1488:Pole star 1409:Symbiotic 1404:Eclipsing 1336:Starlight 1137:Structure 1127:Supernova 1120:Micronova 1115:Recurrent 1100:Symbiotic 1085:p-process 1080:r-process 1075:s-process 1065:O burning 1055:C burning 1035:CNO cycle 978:Gravastar 514:Hypernova 504:Supernova 479:Dredge-up 452:Blue loop 445:super-AGB 428:Red clump 405:Evolution 363:Protostar 343:Accretion 335:Formation 274:2 January 269:"CH star" 175:(1): 13, 1816:Category 1789:Category 1684:Remnants 1580:Extremes 1540:Parallax 1513:Apparent 1503:Asterism 1481:Sunlight 1431:Globular 1416:Multiple 1341:Variable 1331:Rotation 1291:Dynamics 1182:Starspot 856:Magnetar 799:Remnants 615:Subgiant 588:Subdwarf 440:post-AGB 250:14521922 28:CH stars 18:CH stars 1756:Gravity 1705:Related 1625:Nearest 1573:Chinese 1421:Cluster 1394:Contact 1231:Proplyd 1105:Remnant 993:Blitzar 967:Hawking 923:Strange 873:Burster 829:Neutron 782:Extreme 733:He-weak 378:T Tauri 228:Bibcode 177:Bibcode 113:Bibcode 40:spectra 1746:Galaxy 1734:Planet 1722:Desert 1630:bright 1568:Arabic 1389:Binary 1209:Bubble 933:Planck 908:Exotic 844:Binary 839:Pulsar 777:Helium 738:Barium 681:Carbon 674:Yellow 662:Yellow 635:Yellow 474:PG1159 248:  150:  1751:Guest 1555:Lists 1436:Super 1090:Fusor 963:Black 948:Quark 928:Preon 913:Boson 849:X-ray 765:Shell 718:Ap/Bp 620:Giant 538:Early 484:OH/IR 314:Stars 246:S2CID 218:arXiv 193:, 85. 48:metal 1426:Open 1321:Mass 1145:Core 1095:Nova 988:Iron 938:Dark 748:Lead 728:HgMn 723:CEMP 652:Blue 625:Blue 543:Late 325:List 276:2009 148:ISBN 1727:Sub 1461:Sun 880:SGR 657:Red 630:Red 236:doi 214:359 185:doi 173:826 121:doi 109:352 1818:: 760:Be 713:Am 696:CH 691:CN 610:OB 605:WR 244:. 234:. 226:. 212:. 208:. 183:, 171:, 119:, 107:, 62:. 953:Q 772:B 686:S 598:B 593:O 581:M 576:K 571:G 566:F 561:A 556:B 551:O 306:e 299:t 292:v 278:. 252:. 238:: 230:: 220:: 187:: 179:: 156:. 129:. 123:: 115:: 20:)

Index

CH stars
carbon stars
methylidyne
spectra
population II
metal
Philip C. Keenan
carbon stars
Fraunhaufer G band
binary star
Barium stars
mass transfer
classical carbon star
white dwarf
Bibcode
1990ApJ...352..709M
doi
10.1086/168573
The Analysis of Starlight: Two Centuries of Astronomical Spectroscopy
ISBN
978-1107782914
Bibcode
2016ApJ...826...85S
doi
10.3847/0004-637X/826/1/85
"CH stars at high Galactic latitudes"
arXiv
astro-ph/0507202
Bibcode
2005MNRAS.359..531G

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