五 車 二
Epoch J2000.0 Equinox J2000.0 (ICRS) | ||
Component | Aa | Ab |
05h 16m 41.3591s[1][note 1] | ||
+45° 59′ 52.768″[1][note 1] | ||
0.91[2][note 2] | 0.76[2][note 2] | |
0.08 (0.03 to 0.16)[1][3] | ||
G8III/K0III[4] | G1III[4] | |
U-B | +0.44[5] | |
B-V | +0.80[5] | |
V-R | −0.3[1] | |
R-I | +0.44[5] | |
RS CVn[1] | ||
29.19 ± 0.074[6][note 3] km/s | ||
75.52[1][note 1] mas/yr | ||
Dec. ( | −427.11[1][note 1] mas/yr | |
77.29 ± 0.89[1] mas | ||
42.2 ± 0.5 ly (12.9 ± 0.1 pc) | ||
0.35[note 4] | 0.20[note 4] | |
−0.48[note 4] | ||
Details | ||
2.69 ± 0.06[4] M☉ | 2.56 ± 0.04[4] M☉ | |
12.2 ± 0.2[4] R☉ | 9.2 ± 0.4[4] R☉ | |
78.5 ± 1.2[4] L☉ | 77.6 ± 2.6[4] L☉ | |
4940 ± 50[4] K | 5700 ± 100[4] K | |
40% Sun[note 5] | ||
106 ± 3 d [7] | 8.64 ± 0.09 d [7] | |
3[8]km/s | 36[8]km/s | |
5.2 × 108 [4] | ||
104.022 ± 0.002 d | ||
56.47 ± 0.05 mas | ||
| 0.0000 ± 0.0002 | |
137.18 ± 0.05° | ||
40.8 ± 0.1° | ||
2447528.45 ± 0.02 JD | ||
Database references | ||
SIMBAD | data | |
data | data | |
其他 | ||
觀測 的 歷史
[编辑]可 見性
[编辑]五車二看起來是飽滿的黃白色,而在
系統
[编辑]五車二的系統包含一對由明亮的
亮 聯 星 對
[编辑]五車二的亮聯星對由兩顆G-
這個
X射 线源
[编辑]相關 條目
[编辑]註解
[编辑]- ^ 1.0 1.1 1.2 1.3 Astrometric data, mirrored by SIMBAD from the Hipparcos catalogue, pertains to the center of mass of the Capella Aa/Ab binary system. See Volume 1, The Hipparcos and Tycho Catalogues (页面
存 档备份,存 于互联网档案 馆), European Space Agency, 1997, §2.3.4, and the entry (页面存 档备份,存 于互联网档案 馆) in the Hipparcos catalogue (CDS ID I/239 (页面存 档备份,存 于互联网档案 馆).) - ^ 2.0 2.1 The cooler and more massive star, the spectroscopic primary, is the visually fainter star. See Hummel et al. 1994, §1.
- ^ Radial velocity figure is for the center of mass of the Capella Aa/Ab binary system. See Pourbaix 2000, Table 2.
- ^ 4.0 4.1 4.2 From apparent magnitude and parallax.
- ^ From Z=0.02 for the Sun and Hummel et al. 1994, §6.3, which gives Z=0.008 for Capella.
- ^
北極星 只 是 2等 星 。
參考 資料
[编辑]- ^ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 NAME CAPELLA – Variable of RS CVn type, database entry, SIMBAD. Accessed on line December 23, 2008.
- ^ 2.0 2.1 2.2 Capella (页面
存 档备份,存 于互联网档案 馆), Stars, Jim Kaler. Accessed on line December 23, 2008. - ^ NSV 1897, database entry, New Catalogue of Suspected Variable Stars, the improved version (页面
存 档备份,存 于互联网档案 馆), Sternberg Astronomical Institute, Moscow, Russia. Accessed on line December 23, 2008. - ^ 4.00 4.01 4.02 4.03 4.04 4.05 4.06 4.07 4.08 4.09 4.10 4.11 4.12 4.13 4.14 Very high precision orbit of Capella by long baseline interferometry, C. A. Hummel et al., The Astronomical Journal 107, #5 (May 1994), pp. 1859–1867, doi:10.1086/116995, Bibcode:1994AJ....107.1859H. See §1 for spectral types, Table 1 for orbit, Table 5 for stellar parameters, and §6.3 for the age of the system.
- ^ 5.0 5.1 5.2 5.3 5.4 HR 1708 (页面
存 档备份,存 于互联网档案 馆), database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50 (页面存 档备份,存 于互联网档案 馆). Accessed on line December 23, 2008. - ^ Resolved double-lined spectroscopic binaries: A neglected source of hypothesis-free parallaxes and stellar masses, D. Pourbaix, Astronomy and Astrophysics Supplement 145 (August 2000), pp. 215–222, doi:10.1051/aas:2000237, Bibcode:2000A&AS..145..215P; see Table 2.
- ^ 7.0 7.1 On the rotation period of Capella, K. G. Strassmeier et al., Astronomische Nachrichten 322, #2 (March 2001), pp. 115–124, doi:10.1002/1521-3994(200106)322:2, Bibcode:2001AN....322..115S.
- ^ 8.0 8.1 CHANDRA-LETGS X-ray observations of Capella. Temperature, density and abundance diagnostics, R. Mewe et al., Astronomy and Astrophysics 368 (March 2001), pp. 888–900, Bibcode:2001A&A...368..888M, doi:10.1051/0004-6361:20010026; see §1.
- ^ Sirius Matters, Noah Brosch, Springer: 2008, ISBN 978-1-4020-8318-1, p. 46.
- ^ Entry 05167+4600, The Washington Double Star Catalog (页面
存 档备份,存 于互联网档案 馆), United States Naval Observatory. Accessed on line December 24, 2008. - ^ Capella, in The Hundred Greatest Stars, James B. Kaler, Springer, 2002, ISBN 978-0-387-95436-3 (see §18); also doi:10.1007/0-387-21625-1_19.
- ^ 12.0 12.1 Capella HL, T. R. Ayres, pp. 202–204, in Cool Stars, Stellar Systems, and the Sun: Proceedings of the Third Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun, Held in Cambridge, Massachusetts, October 5–7, 1983, edited by Sallie L. Baliunas and Lee Hartmann, Berlin/Heidelberg, Springer-Verlag, 1984, Lecture Notes in Physics, vol. 193, ISBN 978-3-540-12907-3; doi:10.1007/3-540-12907-3_204, Bibcode:1984LNP...193..202A
- ^ Campbell, William Wallace. The Spectroscopic Binary Capella. Astrophysical Journal. October 1899, 10: 177. Bibcode:1899ApJ....10..177C. doi:10.1086/140625.
- ^ Newall, Hugh Frank. Variable Velocities of Stars in the Line of Sight. The Observatory. December 1899, 22: 436–37. Bibcode:1899Obs....22..436N.
- ^ Torres, Guillermo; Claret, Antonio; Young, Patrick A. Binary Orbit, Physical Properties, and Evolutionary State of Capella (
α Aurigae).. The Astrophysical Journal. 2009, 700 (2): 1349–81. Bibcode:2009ApJ...700.1349T. arXiv:0906.0977 . doi:10.1088/0004-637X/700/2/1349. - ^ Mason, B. Classical Observations of Visual Binary and Multiple Stars. William I. Hartkopf; Edward F. Guinan; Petr Harmanec; et al (编). Binary Stars as Critical Tools and Tests in Contemporary Astrophysics, Proceedings of the 240th Symposium of the International Astronomical Union, Held in Prague, Czech Republic. Cambridge University Press. 22–25 August 2006: 88–96 [94]. ISBN 0-521-86348-1. doi:10.1017/S1743921307003857.
- ^ Anderson, J.A. Application of Michelson's Interferometer Method to the Measurement of Close Double Stars. Astrophysical Journal. 1920, 51: 263–75. Bibcode:1920ApJ....51..263A. doi:10.1086/142551.
- ^ Modern Optical Interferometry, Astronomical Optical Interferometry: A Literature Review, Bob Tubbs, St. John's College, Cambridge, April 1997. Accessed on line December 30, 2008.
- ^ The first images from an optical aperture synthesis array: mapping of Capella with COAST at two epochs, J. E. Baldwin et al., Astronomy and Astrophysics 306 (February 1996), pp. L13–L16, Bibcode:1996A&A...306L..13B.
- ^ (
德 文 ) Ein schwacher Begleiter zu Capella, R. Furuhjelm, Astronomische Nachrichten 197, #4715 (April 1914), p. 181, Bibcode:1914AN....197..181F. - ^ Note on duplicity of Capella H, Carl L. Stearns, Astronomical Journal 45, #1048 (July 1936), p. 120, doi:10.1086/105349, Bibcode:1936AJ.....45..120S.
- ^ Confirmation of the Duplicity of Capella H, G. P. Kuiper, Astrophysical Journal 84 (October 1936), p. 359, doi:10.1086/143788, Bibcode:1936ApJ....84Q.359K.
- ^ Schaaf 2008, p. 146.
- ^ Burnham 1978, p. 261.
- ^ Schaaf 2008, p. 151.
- ^ Arnold, H.P. The Photographic Atlas of the Stars. Bristol, UK: IOP Publishing Ltd. 1999: 68. ISBN 0750306548.
- ^ Schaaf 2008, p. 155.
- ^ Schaaf, p. 154.
- ^ Eggen, Olin J. Stellar Groups, VII. The Structure of the Hyades Group. Monthly Notices of the Royal Astronomical Society. 1960, 120: 540–62. Bibcode:1960MNRAS.120..540E. doi:10.1093/mnras/120.6.540.
- ^ Weber, M.; Strassmeier, K. G. The Spectroscopic Orbit of Capella Revisited. Astronomy & Astrophysic. 2011, 531: id.A89 (5 pp.). Bibcode:2011A&A...531A..89W. arXiv:1104.0342 . doi:10.1051/0004-6361/201116885.
- ^ The Brightest Stars: Discovering the Universe through the Sky's Most Brilliant Stars, Fred Schaaf, Hoboken, New Jersey: John Wiley & Sons, 2008, ISBN 978-0-471-70410-2; see pp. 153–155.
- ^ 32.0 32.1 Fisher PC, Meyerott AJ. Stellar X-Ray Emission. Ap J. 1964
年 1月 , 139 (1): 123–42 [2010-04-15]. doi:10.1086/147742. (原始 内容 存 档于2022-03-08). - ^ 33.0 33.1 33.2 Catura RC, Acton LW, Johnson HM. Evidence for X-ray emission from Capella. Ap J. March 1975, 196 (pt.2): L47–9 [2010-04-15]. doi:10.1086/181741. (
原始 内容 存 档于2022-03-08). - ^ Chandra/HETGS Observations of the Capella System: The Primary as a Dominating X-Ray Source, Kazunori Ishibashi et al., The Astrophysical Journal 644, #2 (June 2006), pp. L117–L120, doi:10.1086/505702, Bibcode:2006ApJ...644L.117I.
引用 文獻
[编辑]- Moore, Patrick; Tirion, Wil. Cambridge Guide to Stars and Planets 2nd. Cambridge University Press. 1997. ISBN 978-0-521-58582-8.
- Ridpath, Ian; Tirion, Wil. Stars and Planets Guide. Princeton University Press. 2001. ISBN 978-0-691-08913-3.
外部 連結
[编辑]- HR 1708(页面
存 档备份,存 于互联网档案 馆), catalog entry, Bright Star Catalogue. - GJ 194(页面
存 档备份,存 于互联网档案 馆), catalog entry, Preliminary Version of the Third Catalogue of Nearby Stars, W. Gliese and H. Jahreiss, 1991, CDS ID V/70A(页面存 档备份,存 于互联网档案 馆). - Capella, image at Aladin.
- Images of the bright binary pair from 13 September 1995[
永久 失效 連結 ] and 28 September 1995[永久 失效 連結 ] (note fainter blobs are just noise) - Capella at Constellation Guide(页面
存 档备份,存 于互联网档案 馆)
|