布兰科1

布兰科1（Blanco 1）
观测数据 (J2000 历元)
星座	玉夫座
赤经	00h 04m 24s
赤纬	–29° 56.4′
距离	850+160; −130 ly (260+50; −40 pc) ()
物理性质
估计年龄	100–150 Myr
	相关条目：疏散星团、疏散星团列表

布兰科1 （玉夫座ζ星团）是邻近太阳的一个疏散星团，距离大约850光年，位于玉夫座，在玉夫座ζ附近。它是波多黎各天文学家托·曼努埃尔·布兰科（英语：Víctor Manuel Blanco）在1949年发现的^[1]。他注意到在玉夫座ζ星附近1.5度区域内的A型恒星比例异常的偏高^[2]。这个星团的年龄相对年轻，大约在1亿至1.5亿年之间。它位于银纬-79.3度的高纬度，在银河平面下方约780 ly（240 pc）。

布兰科1包含大约300颗恒星，其中大约170颗的视星等比12等更亮^[3]，其横截面的磁密度大约是每秒差距平方30，不到昴宿星团的一半。在已经确认的成员中，有8颗有红外过量的红外能量，显示有岩屑盘在轨道上环绕它们^[4]。星团中大约一半的成员是联星系统；有6颗被确认是光谱联星^[5]。星团中也大约有30-40颗成员是棕矮星^[1]。

参考资料[编辑]

^ ^1.0 ^1.1 ^1.2 ^1.3 ^1.4 ^1.5 Moraux, E.; et al, The lower mass function of the young open cluster Blanco 1: from 30 M_Jup to 3 M_⊙, Astronomy and Astrophysics, August 2007, 471 (2): 499–513, Bibcode:2007A&A...471..499M, arXiv:0706.2102 , doi:10.1051/0004-6361:20066308.
^ Blanco, Victor M., A New Galactic Star Cluster in Sculptor, Publications of the Astronomical Society of the Pacific, August 1949, 61 (361): 183, Bibcode:1949PASP...61..183B, doi:10.1086/126171.
^ Bagnall, Philip M., The Star Atlas Companion: What You Need to Know about the Constellations, Springer: 409, 2012 [2020-11-21], ISBN 146140830X, （原始内容存档于2018-09-17）.
^ Stauffer, John R.; et al, Debris Disks of Members of the Blanco 1 Open Cluster, The Astrophysical Journal, August 1949, 719 (2): 1859–1871, Bibcode:2010ApJ...719.1859S, arXiv:1007.0239 , doi:10.1088/0004-637X/719/2/1859.
^ González, J. F.; Levato, H., Spectroscopic study of the open cluster Blanco 1, Astronomy and Astrophysics, November 2009, 507 (1): 541–547, Bibcode:2009A&A...507..541G, doi:10.1051/0004-6361/200912772 .

[AAA471_2_499-1] 1.0 ^1.1 ^1.2 ^1.3 ^1.4 ^1.5 Moraux, E.; et al, The lower mass function of the young open cluster Blanco 1: from 30 M_Jup to 3 M_⊙, Astronomy and Astrophysics, August 2007, 471 (2): 499–513, Bibcode:2007A&A...471..499M, arXiv:0706.2102 , doi:10.1051/0004-6361:20066308.

[PASP61_361_183-2] Blanco, Victor M., A New Galactic Star Cluster in Sculptor, Publications of the Astronomical Society of the Pacific, August 1949, 61 (361): 183, Bibcode:1949PASP...61..183B, doi:10.1086/126171.

[Bagnall2012-3] Bagnall, Philip M., The Star Atlas Companion: What You Need to Know about the Constellations, Springer: 409, 2012 [2020-11-21], ISBN 146140830X, （原始内容存档于2018-09-17）.

[ApJ719_2_1859-4] Stauffer, John R.; et al, Debris Disks of Members of the Blanco 1 Open Cluster, The Astrophysical Journal, August 1949, 719 (2): 1859–1871, Bibcode:2010ApJ...719.1859S, arXiv:1007.0239 , doi:10.1088/0004-637X/719/2/1859.

[AAA507_1_541-5] González, J. F.; Levato, H., Spectroscopic study of the open cluster Blanco 1, Astronomy and Astrophysics, November 2009, 507 (1): 541–547, Bibcode:2009A&A...507..541G, doi:10.1051/0004-6361/200912772 .

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