HD 93129

**HD 93129**
	; 被恒星数量不多的川普勒14包围的HD 93129。; Credit: NASA & ESA, Jesús Maíz Apellániz (Instituto de Astrofisica de Andalucia)
观测资料; 历元 J2000
星座	船底座
星官
赤经	10h 43m 57.5s
赤纬	−59° 32′ 51.3″
视星等（V）	6.90 (7.310 + 8.84)
特性
光谱分类	O2If* (O2If+O3.5V)
U−B 色指数	−0.81
B−V 色指数	+0.25
天体测定
径向速度 (Rv)	−0.4 ± 7.4 km/s
自行 (μ)	赤经：-5.0 mas/yr ; 赤纬：17.0 mas/yr
距离	2,300 pc
绝对星等 (MV)	(A): −6.5 (−6.1 + −5.2); (B): −4.9
详细资料
Aa
质量	110 M☉
半径	22.5 R☉
表面重力 (log g)	3.71
亮度	1,480,000 L☉
温度	42,500 K
自转速度 (v sin i)	130 km/s
年龄	0.9+0.2; −0.4 Myr
Ab
质量	70 M☉
半径	13.1 R☉
亮度	575,000 L☉
温度	44,000 K
B
质量	52 M☉
半径	13 R☉
表面重力 (log g)	3.92
亮度	575,000 L☉
温度	44,000 K
自转速度 (v sin i)	112 km/s
Other designations
	CD−58° 3528、HIP 114507, 川普勒14 1、CCDM J10440-5933、WDS J10440-5933
	A: TYC 8626-2805-1, ALS 15862、LS 1820
	B: ALS 19309
参考数据库
SIMBAD	HD 93129
	HD 93129 A
	HD 93129 B

HD 93129是在船底座星云中的一颗三合星系统，而且三颗恒星都是高温的O型星，都属于银河系中最亮恒星列表中的恒星。它是船底座OB1星协中，年轻的川普勒14 星团的主要成员，其它超明亮的成员还有海山二和WR25。

位置

HD 93129是在恒星形成区船底座星云的川普勒14 疏散星团中心发现的恒星。它的距离太远，因此不能使用周年视差法准确的测量其距离，但是海山二和侏儒星云的精确距离、星团建模以及关于假定在同一区域的其它恒星天体的物理数据，都推导出距离约为2,300秒差距^[5]。HD 93129 Aa是最靠近地球的O2超巨星^[12]。

这个空间是其它许多巨大和明亮恒星的家。HD 93128是另一颗O3.5的超巨星，距离川普勒14少于24’；HD 93250和HD 93205是在更大的船底座川普勒16星团周围的另外2颗O3.5型的恒星。还有3颗沃夫–瑞叶星、一颗O4超巨星和许多其它的O型恒星，以及独特的海山二（船底座η）^[9]。

系统

星团川普勒14的影像。影像中最亮的是HD 93129，HD 93129B靠得很近，和可以清晰的解析。

HD 93129可以清晰的看出是由两颗恒星HD 93129A和HD 93129B组成，而HD 93129A本身又由两颗更近的恒星组成。

HD 93129A经由光谱解析为联星。这个系统由最亮的恒星主导，但它的伴星也只是暗了0.9星等。HD 93129Aa是一颗O2型的超巨星，Ab是O3.5的主序星^[13]。它们之间的角距离从2004年的55mas减少到2013年的27mas，但是还未能定出精确的轨道^[12]。

HD 93129B是一颗O3.5主序星，与主星HD 93129A相距3弧秒，视星等暗了1.5等，与HD 93129Ab大致相同^[1]^[3]。

在5弧秒内又检测到5颗较暗的星，在红外线的波段上暗5到7星等^[12]。

性质

HD 93129所有的3颗恒星都是银河系最亮的恒星之一^[5]；超巨星的主星光度为1,480,000 L_☉，其它两颗的光度也是575,000 L_☉。它们也是星系中最热的恒星之一，超巨星的表面温度约为42,500K，另外两颗约为52,000K。计算得出恒星的质量在70 M_☉和110 M_☉之间。

HD 93129Aa已经离开主序带，估计其年龄在90万年左右。川普勒14存在于零龄主序带上的恒星表明其年龄可能小于60万年^[6]。

参考资料

^ ^1.0 ^1.1 ^1.2 ^1.3 ^1.4 ^1.5 Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. The Tycho-2 catalogue of the 2.5 million brightest stars. Astronomy and Astrophysics. 2000, 355: L27. Bibcode:2000A&A...355L..27H. ISBN 0333750888. doi:10.1888/0333750888/2862.
^ Ducati, J. R. VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system. CDS/ADC Collection of Electronic Catalogues. 2002, 2237. Bibcode:2002yCat.2237....0D.
^ ^3.0 ^3.1 ^3.2 ^3.3 引用错误：没有为名为vazquez的参考文献提供内容
^ Sota, A.; Maíz Apellániz, J.; Morrell, N. I.; Barbá, R. H.; Walborn, N. R.; Gamen, R. C.; Arias, J. I.; Alfaro, E. J. The Galactic O-Star Spectroscopic Survey (GOSSS). II. Bright Southern Stars. The Astrophysical Journal Supplement. 2014, 211: 10. Bibcode:2014ApJS..211...10S. arXiv:1312.6222 . doi:10.1088/0067-0049/211/1/10.
^ ^5.0 ^5.1 ^5.2 ^5.3 Cohen, D. H.; Gagné, M.; Leutenegger, M. A.; MacArthur, J. P.; Wollman, E. E.; Sundqvist, J. O.; Fullerton, A. W.; Owocki, S. P. Chandra X-ray spectroscopy of the very early O supergiant HD 93129A: Constraints on wind shocks and the mass-loss rate. Monthly Notices of the Royal Astronomical Society. 2011, 415 (4): 3354–3364. Bibcode:2011MNRAS.415.3354C. arXiv:1104.4786 . doi:10.1111/j.1365-2966.2011.18952.x.
^ ^6.0 ^6.1 ^6.2 ^6.3 Penny, Laura R.; Gies, Douglas R.; Hartkopf, William I.; Mason, Brian D.; Turner, Nils H. The frequency of binary stars in the young cluster Trumpler 14. Publications of the Astronomical Society of the Pacific. 1993, 105: 588. Bibcode:1993PASP..105..588P. doi:10.1086/133200 .
^ ^7.0 ^7.1 ^7.2 Nelan, Edmund P.; Walborn, Nolan R.; Wallace, Debra J.; Moffat, Anthony F. J.; Makidon, Russell B.; Gies, Douglas R.; Panagia, Nino. Resolving OB Systems in the Carina Nebula with the Hubble Space Telescope Fine Guidance Sensor. The Astronomical Journal. 2004, 128: 323–329. Bibcode:2004AJ....128..323N. doi:10.1086/420716.
^ ^8.0 ^8.1 ^8.2 ^8.3 Repolust, T.; Puls, J.; Herrero, A. Stellar and wind parameters of Galactic O-stars. The influence of line-blocking/blanketing. Astronomy and Astrophysics. 2004, 415: 349–376. Bibcode:2004A&A...415..349R. doi:10.1051/0004-6361:20034594 .
^ ^9.0 ^9.1 ^9.2 ^9.3 Smith, Nathan. A census of the Carina Nebula - I. Cumulative energy input from massive stars. Monthly Notices of the Royal Astronomical Society. 2006, 367 (2): 763–772. Bibcode:2006MNRAS.367..763S. arXiv:astro-ph/0601060 . doi:10.1111/j.1365-2966.2006.10007.x.
^ ^10.0 ^10.1 Del Palacio, Santiago; Bosch-Ramon, Valentí; Romero, Gustavo E.; Benaglia, Paula. A model for the non-thermal emission of the very massive colliding-wind binary HD 93129A. Astronomy & Astrophysics. 2016, 591: A139. Bibcode:2016A&A...591A.139D. arXiv:1604.07294 . doi:10.1051/0004-6361/201628264.
^ ^11.0 ^11.1 ^11.2 ^11.3 Vink, Jorick S; Davies, B; Harries, T. J; Oudmaijer, R. D; Walborn, N. R. On the presence and absence of disks around O-type stars. Astronomy and Astrophysics. 2009, 505 (2): 743. Bibcode:2009A&A...505..743V. arXiv:0909.0888 . doi:10.1051/0004-6361/200912610.
^ ^12.0 ^12.1 ^12.2 Sana, H.; Le Bouquin, J.-B.; Lacour, S.; Berger, J.-P.; Duvert, G.; Gauchet, L.; Norris, B.; Olofsson, J.; Pickel, D.; Zins, G.; Absil, O.; De Koter, A.; Kratter, K.; Schnurr, O.; Zinnecker, H. Southern Massive Stars at High Angular Resolution: Observational Campaign and Companion Detection. The Astrophysical Journal Supplement. 2014, 215: 15. Bibcode:2014ApJS..215...15S. arXiv:1409.6304 . doi:10.1088/0067-0049/215/1/15.
^ Benaglia, P.; Koribalski, B. Radio observations of HD 93129A: The earliest O star with the highest mass loss?. Astronomy & Astrophysics. 2004, 416 (1): 171–178. Bibcode:2004A&A...416..171B. arXiv:astro-ph/0312003 . doi:10.1051/0004-6361:20034138.

延伸读物

Benaglia, P.; Koribalski, B. Radio observations of HD 93129A: The earliest O star with the highest mass loss?. Astronomy & Astrophysics. 2004, 416 (1): 171–178. doi:10.1051/0004-6361:20034138.

外部链接

http://jumk.de/astronomie/big-stars/hd-93129a.shtml（页面存档备份，存于互联网档案馆）

分类

[tycho2-1] 1.0 ^1.1 ^1.2 ^1.3 ^1.4 ^1.5 Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. The Tycho-2 catalogue of the 2.5 million brightest stars. Astronomy and Astrophysics. 2000, 355: L27. Bibcode:2000A&A...355L..27H. ISBN 0333750888. doi:10.1888/0333750888/2862.

[ducati-2] Ducati, J. R. VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system. CDS/ADC Collection of Electronic Catalogues. 2002, 2237. Bibcode:2002yCat.2237....0D.

[vazquez-3] 3.0 ^3.1 ^3.2 ^3.3 引用错误：没有为名为vazquez的参考文献提供内容

[goss2014-4] Sota, A.; Maíz Apellániz, J.; Morrell, N. I.; Barbá, R. H.; Walborn, N. R.; Gamen, R. C.; Arias, J. I.; Alfaro, E. J. The Galactic O-Star Spectroscopic Survey (GOSSS). II. Bright Southern Stars. The Astrophysical Journal Supplement. 2014, 211: 10. Bibcode:2014ApJS..211...10S. arXiv:1312.6222 . doi:10.1088/0067-0049/211/1/10.

[cohen-5] 5.0 ^5.1 ^5.2 ^5.3 Cohen, D. H.; Gagné, M.; Leutenegger, M. A.; MacArthur, J. P.; Wollman, E. E.; Sundqvist, J. O.; Fullerton, A. W.; Owocki, S. P. Chandra X-ray spectroscopy of the very early O supergiant HD 93129A: Constraints on wind shocks and the mass-loss rate. Monthly Notices of the Royal Astronomical Society. 2011, 415 (4): 3354–3364. Bibcode:2011MNRAS.415.3354C. arXiv:1104.4786 . doi:10.1111/j.1365-2966.2011.18952.x.

[penny1993-6] 6.0 ^6.1 ^6.2 ^6.3 Penny, Laura R.; Gies, Douglas R.; Hartkopf, William I.; Mason, Brian D.; Turner, Nils H. The frequency of binary stars in the young cluster Trumpler 14. Publications of the Astronomical Society of the Pacific. 1993, 105: 588. Bibcode:1993PASP..105..588P. doi:10.1086/133200 .

[nelan-7] 7.0 ^7.1 ^7.2 Nelan, Edmund P.; Walborn, Nolan R.; Wallace, Debra J.; Moffat, Anthony F. J.; Makidon, Russell B.; Gies, Douglas R.; Panagia, Nino. Resolving OB Systems in the Carina Nebula with the Hubble Space Telescope Fine Guidance Sensor. The Astronomical Journal. 2004, 128: 323–329. Bibcode:2004AJ....128..323N. doi:10.1086/420716.

[repolust-8] 8.0 ^8.1 ^8.2 ^8.3 Repolust, T.; Puls, J.; Herrero, A. Stellar and wind parameters of Galactic O-stars. The influence of line-blocking/blanketing. Astronomy and Astrophysics. 2004, 415: 349–376. Bibcode:2004A&A...415..349R. doi:10.1051/0004-6361:20034594 .

[smith-9] 9.0 ^9.1 ^9.2 ^9.3 Smith, Nathan. A census of the Carina Nebula - I. Cumulative energy input from massive stars. Monthly Notices of the Royal Astronomical Society. 2006, 367 (2): 763–772. Bibcode:2006MNRAS.367..763S. arXiv:astro-ph/0601060 . doi:10.1111/j.1365-2966.2006.10007.x.

[delpalacio-10] 10.0 ^10.1 Del Palacio, Santiago; Bosch-Ramon, Valentí; Romero, Gustavo E.; Benaglia, Paula. A model for the non-thermal emission of the very massive colliding-wind binary HD 93129A. Astronomy & Astrophysics. 2016, 591: A139. Bibcode:2016A&A...591A.139D. arXiv:1604.07294 . doi:10.1051/0004-6361/201628264.

[vink-11] 11.0 ^11.1 ^11.2 ^11.3 Vink, Jorick S; Davies, B; Harries, T. J; Oudmaijer, R. D; Walborn, N. R. On the presence and absence of disks around O-type stars. Astronomy and Astrophysics. 2009, 505 (2): 743. Bibcode:2009A&A...505..743V. arXiv:0909.0888 . doi:10.1051/0004-6361/200912610.

[sana-12] 12.0 ^12.1 ^12.2 Sana, H.; Le Bouquin, J.-B.; Lacour, S.; Berger, J.-P.; Duvert, G.; Gauchet, L.; Norris, B.; Olofsson, J.; Pickel, D.; Zins, G.; Absil, O.; De Koter, A.; Kratter, K.; Schnurr, O.; Zinnecker, H. Southern Massive Stars at High Angular Resolution: Observational Campaign and Companion Detection. The Astrophysical Journal Supplement. 2014, 215: 15. Bibcode:2014ApJS..215...15S. arXiv:1409.6304 . doi:10.1088/0067-0049/215/1/15.

[benaglia-13] Benaglia, P.; Koribalski, B. Radio observations of HD 93129A: The earliest O star with the highest mass loss?. Astronomy & Astrophysics. 2004, 416 (1): 171–178. Bibcode:2004A&A...416..171B. arXiv:astro-ph/0312003 . doi:10.1051/0004-6361:20034138.

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观测资料历元 J2000
被恒星数量不多的川普勒14包围的HD 93129。 Credit: NASA & ESA, Jesús Maíz Apellániz (Instituto de Astrofisica de Andalucia)
星座	船底座
星官
赤经	10^h 43^m 57.5^s^[1]
赤纬	−59° 32′ 51.3″^[1]
视星等（V）	6.90^[2] (7.310^[1] + 8.84^[3])
特性
光谱分类	O2If^*^[4] (O2If+O3.5V^[5])
U−B 色指数	−0.81^[3]
B−V 色指数	+0.25^[3]
天体测定

径向速度 (R_v)	−0.4 ± 7.4^[6] km/s
自行 (μ)	赤经：-5.0^[1] mas/yr 赤纬：17.0^[1] mas/yr
距离	2,300^[5] pc
绝对星等 (M_V)	(A): −6.5 (−6.1 + −5.2) (B): −4.9^[7]

详细资料
Aa
质量	110^[7] M_☉
半径	22.5^[8] R_☉
表面重力 (log g)	3.71^[8]
亮度	1,480,000^[9] L_☉
温度	42,500^[8] K
自转速度 (v sin i)	130^[8] km/s
年龄	6999900000000000000♠0.9+0.2 −0.4^[6] Myr
Ab
质量	70^[7] M_☉
半径	13.1^[10] R_☉
亮度	575,000^[9] L_☉
温度	44,000^[10] K

B
质量	52^[11] M_☉
半径	13^[11] R_☉
表面重力 (log g)	3.92^[11]
亮度	575,000^[9] L_☉
温度	44,000^[11] K
自转速度 (v sin i)	112^[6] km/s

Other designations
CD−58° 3528、HIP 114507, 川普勒14 1、CCDM J10440-5933、WDS J10440-5933
A: TYC 8626-2805-1, ALS 15862、LS 1820
B: ALS 19309
参考数据库
SIMBAD	HD 93129
	HD 93129 A
	HD 93129 B

HD 93129

位置

系统

性质

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参考资料

延伸读物

外部链接

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