请输入您要查询的百科知识:

 

词条 Blanco 1
释义

  1. References

{{Infobox cluster
| name = Blanco 1
| image =
| caption =
| credit =
| epoch = J2000
| constellation = Sculptor
| ra = {{RA|00|04|24}}
| dec = {{DEC|–29|56.4}}
| dist_ly = {{val|850|+160|-130|ul=ly}} ({{val|260|+50|-40|ul=pc}})
| dist_pc =
| appmag_v =
| size_v =
| mass_msol =
| age = 100–150 Myr
| notes =
| names =
}}

Blanco 1 is a nearby open cluster of stars located around 850 light years away from the Sun in the southern constellation of Sculptor. It was discovered by Puerto Rican astronomer Víctor Manuel Blanco in 1949, who noticed an unusually high proportion of A-type stars in an area spanning 1.5°.[6] This cluster is relatively young, with an age of about 100–150 million years. It is positioned at a high galactic latitude of b = –79.3° and is located some {{Convert|240|pc|ly|abbr=on|disp=flip}} below the galactic plane.

Blanco 1 contains approximately 300 stars, around 170 of these being brighter than magnitude +12,[7] and it has a cross-sectional magnitudal density of about 30 per square parsec: less than half that of the Pleiades cluster. Of the confirmed members, eight have been found to radiate an excess of infrared energy, indicating that they host orbiting debris disks.[8] Roughly half the stars in the cluster are members of binary star systems; six of the member stars are confirmed spectroscopic binaries.[9] There are also some 30–40 brown dwarf members.

References

1. ^{{citation | last1 = González | first1 = J. F. | last2 = Levato | first2 = H. | title = Spectroscopic study of the open cluster Blanco 1 | journal = Astronomy and Astrophysics | volume = 507 | issue = 1 | pages = 541–547 |date=November 2009 | doi = 10.1051/0004-6361/200912772 | bibcode = 2009A&A...507..541G | postscript = .}}
2. ^{{citation | last1 = Blanco | first1 = Victor M. | title = A New Galactic Star Cluster in Sculptor | journal = Publications of the Astronomical Society of the Pacific | volume = 61 | issue = 361 | page = 183 |date=August 1949 | doi = 10.1086/126171 | bibcode = 1949PASP...61..183B | postscript = .}}
3. ^{{citation | last1 = Stauffer | first1 = John R. | last2 = Rebull | first2 = Luisa M. | last3 = James | first3 = David | last4 = Noriega-Crespo | first4 = Alberto | last5 = Strom | first5 = Steven | last6 = Wolk | first6 = Scott | last7 = Carpenter | first7 = John M. | last8 = Barrado y Navascues | first8 = David | last9 = Micela | first9 = Giusi | last10 = Backman | first10 = Dana | last11 = Cargile | first11 = P. A. | display-authors = 1 | title = Debris Disks of Members of the Blanco 1 Open Cluster | journal = The Astrophysical Journal | volume = 719 | issue = 2 | pages = 1859–1871 |date=August 1949 | doi = 10.1088/0004-637X/719/2/1859 | bibcode =2010ApJ...719.1859S | postscript = .|arxiv = 1007.0239 }}
4. ^{{citation | last1 = Bagnall | first1 = Philip M. | title = The Star Atlas Companion: What You Need to Know about the Constellations | publisher = Springer | page = 409 | year = 2012 | isbn = 146140830X | url = https://books.google.com/books?id=KcIg02TKW6QC&pg=PA409 | postscript = .}}
[1][2][3][4]
}}

2 : Sculptor (constellation)|Open clusters

随便看

 

开放百科全书收录14589846条英语、德语、日语等多语种百科知识,基本涵盖了大多数领域的百科知识,是一部内容自由、开放的电子版国际百科全书。

 

Copyright © 2023 OENC.NET All Rights Reserved
京ICP备2021023879号 更新时间:2024/9/22 19:38:40