Beta Columbae
Template:Short description Template:Distinguish Template:Starbox begin Template:Starbox image Template:Starbox observe Template:Starbox character Template:Starbox astrometry Template:Starbox detail Template:Starbox catalog Template:Starbox reference Template:Starbox end
Beta Columbae is the second-brightest star in the southern constellation of Columba.[1] It has the proper name Wazn Template:IPAc-en;[2] Beta Columbae is its Bayer designation, which is Latinized from β Columbae, and abbreviated Beta Col or β Col. This star has an apparent visual magnitude of 3.1,[3] which is bright enough to be viewed with the naked eye even from an urban location. Parallax measurements place it at a distance of about Template:Convert from the Sun.[4]
Nomenclature
Beta Columbae is the star's Bayer designation. It has the traditional name Wazn (or Wezn) from the Arabic وزن "weight".[5][1] In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN)[6] to catalog and standardize proper names for stars. The WGSN's first bulletin of July 2016[7] included a table of the first two batches of names approved by the WGSN; which included Wazn for this star.
In Chinese, Template:Lang (Template:Lang), meaning Son, refers to an asterism consisting of Beta Columbae and Lambda Columbae.[8] Consequently, Beta Columbae itself is known as Template:Lang (Template:Lang, Template:Langx.)[9]
Properties
The spectrum of Beta Columbae matches a stellar classification of K1 IIICN+1,[10] where the 'III' luminosity class indicates this is a giant star that has exhausted the supply of hydrogen at its core and evolved away from the main sequence of stars like the Sun. The notation 'CN+1' indicates a higher than normal level of cyanogen (CN) absorption in the atmosphere of the star.[11]
The interferometry-measured angular diameter of this star, after correcting for limb darkening, is Template:Val,[12] which, at its estimated distance, equates to a physical radius of about 11.5 times the radius of the Sun.[13] Despite having expanded to this radius, Beta Columbae only has about a 10% greater mass than the Sun.[14] The outer envelope of this star is radiating energy at an effective temperature of 4,545 K,[15] resulting an orange[16] hue that is typical of a cool, K-type star.[17]
Beta Columbae has a high proper motion across the celestial sphere[18] and is moving at an unusually large speed of Template:Nowrap relative to the Sun.[1] About 107,200 years ago, it made a close approach to the Beta Pictoris system. The estimated separation of the two stars at this time was around Template:Convert and Beta Columbae may have perturbed outlying planetesimals within the debris disk surrounding Beta Pictoris.[18]
References
- ↑ 1.0 1.1 1.2 Cite error: Invalid
<ref>tag; no text was provided for refs named "kaler". - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs named "IAU-CSN". - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs named "sps1966". - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs named "aaa474_2_653". - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs named "bsc1". - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs named "WGSN". - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs named "WGSN1". - ↑ Template:In lang 中國星座神話, written by 陳久金. Published by 台灣書房出版有限公司, 2005, Template:ISBN.
- ↑ Template:In lang 香港太空館 - 研究資源 - 亮星中英對照表 Template:Webarchive, Hong Kong Space Museum. Accessed on line November 23, 2010.
- ↑ Cite error: Invalid
<ref>tag; no text was provided for refs named "sb0". - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs named "pasp99_629". - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs named "aaa431_773". - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs named "lang2006". - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs named "apjl674_1_L53". - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs named "aj132_1_161". - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs named "Kambic2009". - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs named "csiro". - ↑ 18.0 18.1 Cite error: Invalid
<ref>tag; no text was provided for refs named "apj553_1_410".