跳转到内容

建增八：修订间差异

维基百科，自由的百科全书
以互动方式浏览历史
下一版本→
删除的内容 添加的内容
可视化wikitext
彭鹏（留言 | 贡献）
延伸确认用户
15,914次编辑
 
新條目
标签：移除重定向
第1行： 第1行：
{{ For|具有此[[拜耳命名法|拜耳名稱]]的其它恆星系統|人馬座ρ{{!}}人馬座ρ}}
#REDIRECT [[人马座ρ#人马座ρ²]]
{{Starbox begin
| name = 建增八<br />人馬座ρ<sup>2</sup>
}}
{{Starbox image
| image =
<div style="position: relative">[[File:Sagittarius IAU.svg|250px|alt=Diagram showing star positions and boundaries of the Sagittarius constellation and its surroundings]]
<div style="position: absolute; left: 39.3%; top: 27.0%;">[[File:Cercle rouge 100%.svg|12px]]</div>
</div>
| caption=建增八的位置（紅圈）
}}
{{Starbox observe
| epoch = [[J2000.0]]
| equinox = [[J2000.0]] ([[國際天球參考系|ICRS]])
| constell = [[人馬座]]
| ra = {{RA|19|21|50.89574}}<ref name=vanLeeuwen2007/>
| dec = {{DEC|−18|18|30.1996}}<ref name=vanLeeuwen2007/>
| appmag_v = +5.87<ref name=Corben1968/>
}}
{{Starbox character
| class = K0&nbsp;III<ref name=houk1978/>
| b-v = +1.06<ref name=Corben1968/>
| u-b =
| variable =
}}
{{Starbox astrometry
| radial_v = {{Val|−12.7|2.9}}<ref name=Gontcharov2006/>
| prop_mo_ra = +102.72<ref name=vanLeeuwen2007/>
| prop_mo_dec = −93.20<ref name=vanLeeuwen2007/>
| parallax = 9.82
| p_error = 0.40
| parallax_footnote = <ref name=vanLeeuwen2007/>
| absmag_v = +0.80<ref name=Anderson2012/>
}}
{{Starbox detail
| source =
| mass =
| radius =
| luminosity = 60.4<ref name=Mcdonald2012/>
| temperature = 4,721<ref name=Mcdonald2012/>
| gravity =
| metal_fe =
| rotational_velocity =
| age_myr =
}}
{{Starbox catalog
| names = {{odlist | B=ρ<sup>2</sup>&nbsp;Sgr | F=45&nbsp;Sgr | BD=−18° 5325 | HD=181645 | HIP=95188 | HR=7344 | SAO=162521 }}<ref name=SIMBAD/>
}}
{{Starbox reference
| Simbad = rho02+Sgr
}}
{{Starbox end}}

'''建增八'''（'''人馬座ρ<sup>2</sup>'''）是在[[黃道]][[星座]][[人馬座]]的一顆[[恆星]]，它的[[視星等]]為+5.87等<ref name=Corben1968/>，接近肉眼可以看到的恆星下限。根據從地球觀測得到9.82[[毫角秒|mas]]的年週[[恆星視差|視差]] <ref name=vanLeeuwen2007/>，它距離[[太陽]]約330[[光年]]。

這是一顆[[恆星分類]]為K0III，為[[恆星演化|演化]]的[[恆星分類#K型|K型]][[巨星]]<ref name=houk1978/>。根據1997年的[[掩星#月掩星|月掩星]]觀測，在21mas的[[角距離]]處發現了一顆伴星。它似乎是一顆[[A型主序星]]，類型約為A5。這顆伴星在之前的月掩星中沒有被發現<ref name=Richichi1999/>。

== 參考資料 ==
{{reflist|refs=

<ref name=vanLeeuwen2007>{{citation
| title=Validation of the new Hipparcos reduction
| last1=van Leeuwen | first1=F.
| journal=Astronomy and Astrophysics
| volume=474 | issue=2 | pages=653–664 | date=2007
| arxiv=0708.1752 | bibcode=2007A&A...474..653V
| doi=10.1051/0004-6361:20078357 | s2cid=18759600 | postscript=. }}</ref>

<ref name=Anderson2012>{{citation
| title=XHIP: An extended hipparcos compilation
| last1=Anderson | first1=E. | last2=Francis | first2=Ch.
| journal=Astronomy Letters
| volume=38 | issue=5 | pages=331 | year=2012
| bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015
| arxiv=1108.4971 | s2cid=119257644 | postscript=. }}</ref>

<ref name=Gontcharov2006>{{citation
| title=Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system
| last1=Gontcharov | first1=G. A.
| journal=Astronomy Letters
| volume=32 | issue=11 | pages=759–771 | date=2006
| bibcode=2006AstL...32..759G | doi=10.1134/S1063773706110065
| arxiv=1606.08053| s2cid=119231169 | postscript=. }}</ref>

<ref name=Mcdonald2012>{{citation
| display-authors=1 | last1=McDonald | first1=I.
| last2=Zijlstra | first2=A. A. | last3=Boyer | first3=M. L.
| title=Fundamental Parameters and Infrared Excesses of Hipparcos Stars
| journal=Monthly Notices of the Royal Astronomical Society
| volume=427 | issue=1 | pages=343–57 | date=2012
| bibcode=2012MNRAS.427..343M | arxiv=1208.2037
| doi=10.1111/j.1365-2966.2012.21873.x | s2cid=118665352 | postscript=. }}</ref>

<ref name=Richichi1999>{{citation
| title=New binary stars discovered by lunar occultations. IV
| last1=Richichi | first1=A. | last2=Ragland | first2=S.
| last3=Calamai | first3=G. | last4=Baffa | first4=C.
| last5=Stecklum | first5=B. | last6=Richter | first6=S.
| journal=Astronomy and Astrophysics | display-authors=1
| volume=350 | pages=491–496 | date=October 1999
| bibcode=1999A&A...350..491R | postscript=. }}</ref>

<ref name=houk1978>{{citation
| last1=Houk | first1=Nancy | last2=Smith-Moore | first2=M.
| title=Michigan catalogue of two-dimensional spectral types for the HD stars
| volume=4 | publication-place=Ann Arbor | year=1978
| publisher=Dept. of Astronomy, University of Michigan
| bibcode=1988mcts.book.....H | postscript=. }}</ref>

<ref name=Corben1968>{{citation
| last1=Corben | first1=P. M. | last2=Stoy | first2=R. H.
| title=Photoelectric Magnitudes and Colours for Bright Southern Stars
| journal=Monthly Notes of the Astronomical Society of Southern Africa
| volume=27 | page=11 | year=1968
| bibcode=1968MNSSA..27...11C | postscript=. }}</ref>

<ref name=SIMBAD>{{cite simbad
| title=rho02 Sgr | access-date=2017-07-05 | postscript=. }}</ref>

}}

{{Stars of Sagittarius|state=collapsed}}

{{DEFAULTSORT:Rho2 Sagittarii}}
[[Category:K-型巨星]]
[[Category:雙星]]
[[Category:拜耳天體|人馬座, Rho]]
[[Category:人馬座]]
[[Category: BD、CD和CP天體]]
[[Category:佛氏天體|人馬座, 45]]
[[Category:HD和HDE天體|181645]]
[[Category:HIP天體|95188]]
[[Category:HR天體|7344]]

2023年7月4日 (二) 07:11的版本

  关于具有此拜耳名稱的其它恆星系統，请见「人馬座ρ」。
建增八
人馬座ρ2
Diagram showing star positions and boundaries of the Sagittarius constellation and its surroundings
建增八的位置（紅圈）
觀測資料
曆元 J2000.0
星座 人馬座
星官
赤經 19h 21m 50.89574s[1]
赤緯 −18° 18′ 30.1996″[1]
視星等（V） +5.87[2]
特性
光谱分类K0 III[3]
B−V 色指数+1.06[2]
天体测定
徑向速度 (Rv)−12.7±2.9[4] km/s
自行 (μ) 赤经：+102.72[1] mas/yr
赤纬：−93.20[1] mas/yr
视差 (π)9.82 ± 0.40[1] mas
距离330 ± 10 ly
(102 ± 4 pc)
绝对星等 (MV)+0.80[5]
詳細資料
亮度60.4[6] L☉
溫度4,721[6] K
其他命名
ρ2 Sgr、​45 Sgr、​BD−18° 5325、​HD 181645、​HIP 95188、​HR 7344、​SAO 162521[7]
參考資料庫
SIMBAD资料

建增八（人馬座ρ2）是在黃道星座人馬座的一顆恆星，它的視星等為+5.87等[2]，接近肉眼可以看到的恆星下限。根據從地球觀測得到9.82mas的年週視差 [1]，它距離太陽約330光年。

這是一顆恆星分類為K0III，為演化的K型巨星[3]。根據1997年的月掩星觀測，在21mas的角距離處發現了一顆伴星。它似乎是一顆A型主序星，類型約為A5。這顆伴星在之前的月掩星中沒有被發現[8]。

參考資料

  1. ^ 1.0 1.1 1.2 1.3 1.4 1.5 van Leeuwen, F., Validation of the new Hipparcos reduction, Astronomy and Astrophysics, 2007, 474 (2): 653–664, Bibcode:2007A&A...474..653V, S2CID 18759600, arXiv:0708.1752 可免费查阅, doi:10.1051/0004-6361:20078357. 
  2. ^ 2.0 2.1 2.2 Corben, P. M.; Stoy, R. H., Photoelectric Magnitudes and Colours for Bright Southern Stars, Monthly Notes of the Astronomical Society of Southern Africa, 1968, 27: 11, Bibcode:1968MNSSA..27...11C. 
  3. ^ 3.0 3.1 Houk, Nancy; Smith-Moore, M., Michigan catalogue of two-dimensional spectral types for the HD stars 4, Ann Arbor: Dept. of Astronomy, University of Michigan, 1978, Bibcode:1988mcts.book.....H. 
  4. ^ Gontcharov, G. A., Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system, Astronomy Letters, 2006, 32 (11): 759–771, Bibcode:2006AstL...32..759G, S2CID 119231169, arXiv:1606.08053 可免费查阅, doi:10.1134/S1063773706110065. 
  5. ^ Anderson, E.; Francis, Ch., XHIP: An extended hipparcos compilation, Astronomy Letters, 2012, 38 (5): 331, Bibcode:2012AstL...38..331A, S2CID 119257644, arXiv:1108.4971 可免费查阅, doi:10.1134/S1063773712050015. 
  6. ^ 6.0 6.1 McDonald, I.; et al, Fundamental Parameters and Infrared Excesses of Hipparcos Stars, Monthly Notices of the Royal Astronomical Society, 2012, 427 (1): 343–57, Bibcode:2012MNRAS.427..343M, S2CID 118665352, arXiv:1208.2037 可免费查阅, doi:10.1111/j.1365-2966.2012.21873.x. 
  7. ^ [
    http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=rho02+Sgr
    rho02 Sgr] 请检查|url=值 (帮助). SIMBAD. 斯特拉斯堡天文資料中心.     
  8. ^ Richichi, A.; et al, New binary stars discovered by lunar occultations. IV, Astronomy and Astrophysics, October 1999, 350: 491–496, Bibcode:1999A&A...350..491R. 
取自“https://zh.wikipedia.org/w/index.php?title=建增八&oldid=77940567”