Movatterモバイル変換

[0]ホーム
URL:

Jump to content
WikipediaThe Free Encyclopedia
Search

N Centauri

From Wikipedia, the free encyclopedia
Binary star in the constellation Centaurus
Forn Centauri, seeHD 111968.
N Centauri
Observation data
Epoch J2000.0      Equinox J2000.0
ConstellationCentaurus[1]
A
Right ascension13h 52m 04.86231s[2]
Declination−52° 48′ 41.5063″[2]
Apparent magnitude (V)5.26[3]
B
Right ascension13h 52m 02.97130s[4]
Declination−52° 48′ 35.7079″[4]
Apparent magnitude (V)7.49[5]
Characteristics
A
Evolutionary stagemain sequence[2]
Spectral typeB9V[6][7]
B−Vcolor index−0.084±0.003[3]
B
Evolutionary stagemain sequence[4]
Spectral typeF0Vn[6][7]
B−Vcolor index+0.286±0.009[5]
Astrometry
A
Radial velocity (Rv)+27.0±4.2[3] km/s
Proper motion (μ)RA: −38.997[2]mas/yr
Dec.: −26.863[2]mas/yr
Parallax (π)10.7449±0.0882 mas[2]
Distance304 ± 2 ly
(93.1 ± 0.8 pc)
Absolute magnitude (MV)+0.76[3]
B
Radial velocity (Rv)+11.17±0.46[4] km/s
Proper motion (μ)RA: −38.997[4]mas/yr
Dec.: −26.863[4]mas/yr
Parallax (π)10.7449±0.0882 mas[4]
Distance304 ± 2 ly
(93.1 ± 0.8 pc)
Details
A
Mass3.04[8] M☉
Radius2.458[8] R☉
Luminosity70.18[3] L☉
Surface gravity (log g)4.32±0.14[9] cgs
Temperature13,032±443[9] K
Rotational velocity (v sin i)205[9] km/s
Age66[9] Myr
B
Mass1.48±0.01[10] M☉
Radius1.61+0.08
−0.09[10] R☉
Luminosity6.43[11] L☉
Surface gravity (log g)4.29[12] cgs
Temperature7,354[11] K
Metallicity[Fe/H]−0.01+0.17
−0.15[10] dex
Age1.07+1.56
−0.42[10] Gyr
Other designations
N Cen,CCDM J13521-5249,WDS J13521-5249[13]
A:CPD−52°6787,GC 18720,HD 120642,HIP 67703,HR 5207,SAO 241239[13]
B:CD−52°5831,GC 18718,HD 120641,HIP 67702,SAO 241238[14]
Database references
SIMBADA
B

N Centauri is abinary star[15] in the southernconstellation ofCentaurus. The brighter star is dimly visible to the naked eye with anapparent visual magnitude of 5.26, and it is approximately 304 light years away based onparallax. It has anabsolute magnitude of +0.76 and is drifting further away from theSun with aradial velocity of +27 km/s. It is a candidate member of theSco OB2 moving group.[16]

The double nature of this system was discovered by German astronomerCarl Rümker in 1835. As of 2016, the companion lay at anangular separation of18.5″ along aposition angle of 289° from the primary.[17] They form a co-moving pair with a projected separation of1,566 AU.[18] The more luminous member is aB-type main-sequence star with astellar classification of B9V.[15] Its fainter companion is anF-type main-sequence star with a class of F0Vn, where the 'n' suffix indicates that the metalabsorption lines in its spectrum are unusual broad ("nebulous") and indicative of rapid rotation.[6][7] Based upon discrepancies in the proper motion measurements, there are hints of a third member of this system.[15]

References

[edit]
  1. ^Roman, Nancy G. (1987)."Identification of a constellation from a position".Publications of the Astronomical Society of the Pacific.99 (617): 695.Bibcode:1987PASP...99..695R.doi:10.1086/132034. Constellation record for this object atVizieR.
  2. ^abcdefVallenari, A.; et al. (Gaia collaboration) (2023)."Gaia Data Release 3. Summary of the content and survey properties".Astronomy and Astrophysics.674: A1.arXiv:2208.00211.Bibcode:2023A&A...674A...1G.doi:10.1051/0004-6361/202243940.S2CID 244398875. Gaia DR3 record for this source atVizieR.
  3. ^abcdeAnderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation".Astronomy Letters.38 (5): 331.arXiv:1108.4971.Bibcode:2012AstL...38..331A.doi:10.1134/S1063773712050015. XHIP record for this object atVizieR.
  4. ^abcdefgVallenari, A.; et al. (Gaia collaboration) (2023)."Gaia Data Release 3. Summary of the content and survey properties".Astronomy and Astrophysics.674: A1.arXiv:2208.00211.Bibcode:2023A&A...674A...1G.doi:10.1051/0004-6361/202243940.S2CID 244398875. Gaia DR3 record for this source atVizieR.
  5. ^abAnderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation".Astronomy Letters.38 (5): 331.arXiv:1108.4971.Bibcode:2012AstL...38..331A.doi:10.1134/S1063773712050015. XHIP record for this object atVizieR.
  6. ^abcSkiff, B. A. (2014), "VizieR Online Data Catalog: Catalogue of Stellar Spectral Classifications (Skiff, 2009- )",VizieR On-line Data Catalog,Bibcode:2014yCat....1.2023S.
  7. ^abcGahm, G. F.; Ahlin, P.; Lindroos, K. P. (1983), "A study of visual double stars with early type primaries. I. Spectroscopic results",Astronomy and Astrophysics Supplement Series,51: 143,Bibcode:1983A&AS...51..143G.
  8. ^abStassun K.G.; et al. (October 2019), "The revised TESS Input Catalog and Candidate Target List",The Astronomical Journal,158 (4): 138,arXiv:1905.10694,Bibcode:2019AJ....158..138S,doi:10.3847/1538-3881/ab3467,S2CID 166227927.
  9. ^abcdDavid, Trevor J.; Hillenbrand, Lynne A. (2015), "The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets",The Astrophysical Journal,804 (2): 146,arXiv:1501.03154,Bibcode:2015ApJ...804..146D,doi:10.1088/0004-637X/804/2/146,S2CID 33401607.
  10. ^abcdBochanski, John J.; et al. (April 2018), "Fundamental Properties of Co-moving Stars Observed by Gaia",The Astronomical Journal,155 (4): 17,arXiv:1801.00537,Bibcode:2018AJ....155..149B,doi:10.3847/1538-3881/aaaebe,S2CID 119256051, 149.
  11. ^abBrown, A. G. A.; et al. (Gaia collaboration) (August 2018)."Gaia Data Release 2: Summary of the contents and survey properties".Astronomy & Astrophysics.616. A1.arXiv:1804.09365.Bibcode:2018A&A...616A...1G.doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source atVizieR.
  12. ^Anders, F.; Khalatyan, A.; Chiappini, C.; Queiroz, A. B.; Santiago, B. X.; Jordi, C.; Girardi, L.; Brown, A. G. A.; Matijevic, G.; Monari, G.; Cantat-Gaudin, T. (2019-08-01), "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18",Astronomy and Astrophysics,628: A94,arXiv:1904.11302,Bibcode:2019A&A...628A..94A,doi:10.1051/0004-6361/201935765,ISSN 0004-6361,S2CID 131780028.
  13. ^ab"N Cen".SIMBAD.Centre de données astronomiques de Strasbourg. Retrieved2020-03-03.
  14. ^"HD 120641".SIMBAD.Centre de données astronomiques de Strasbourg. Retrieved2020-03-03.
  15. ^abcEggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems",Monthly Notices of the Royal Astronomical Society,389 (2):869–879,arXiv:0806.2878,Bibcode:2008MNRAS.389..869E,doi:10.1111/j.1365-2966.2008.13596.x,S2CID 14878976.
  16. ^Rizzuto, Aaron; et al. (October 2011), "Multidimensional Bayesian membership analysis of the Sco OB2 moving group",Monthly Notices of the Royal Astronomical Society,416 (4):3108–3117,arXiv:1106.2857,Bibcode:2011MNRAS.416.3108R,doi:10.1111/j.1365-2966.2011.19256.x,S2CID 54510608.
  17. ^Mason, B. D.; et al. (2014),"The Washington Visual Double Star Catalog",The Astronomical Journal,122 (6): 3466,Bibcode:2001AJ....122.3466M,doi:10.1086/323920, retrieved2015-07-22
  18. ^Lindroos, K. P. (1985), "A study of visual double stars with early type primaries. IV Astrophysical data",Astronomy and Astrophysics Supplement Series,60: 183,Bibcode:1985A&AS...60..183L.
Stars
Bayer
Flamsteed
Variable
HR
HD
Other
Exoplanets
Star
clusters
NGC
Other
Nebulae
NGC
Other
Galaxies
NGC
Other
Galaxy clusters
Astronomical events
Retrieved from "https://en.wikipedia.org/w/index.php?title=N_Centauri&oldid=1303732492"
Categories:
Hidden categories:
[8]ページ先頭
©2009-2026 Movatter.jp