Star in the constellation Centaurus
For other stars with this Bayer designation, see
Xi Centauri .
ξ1 Cen is the brightest star in the picture, at the right of the galaxyNGC 4945 . Xi1 Centauri is a solitary[ 11] star in the southernconstellation ofCentaurus . Its name is aBayer designation that isLatinized from ξ1 Centauri, and abbreviated Xi1 Cen or ξ1 Cen. This star is visible to thenaked eye with anapparent visual magnitude of +4.83.[ 3] parallax shift ofmas [ 2] light years from theSun . At that distance, the apparent visual magnitude of the star is diminished by an interstellarextinction factor of 0.10[ 12] arc minutes to the east of Xi1 Centauri lies the galaxyNGC 4945 .[ 13]
This is anA-type main sequence star with astellar classification of A0 V.[ 4] [ 6] projected rotational velocity of 185 km/s.[ 9] mass of the Sun [ 6] Sun's radius .[ 7] solar luminosity [ 8] outer atmosphere at aneffective temperature of 10,462 K.[ 6]
^a b Anderson, 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 .^a b c d e Vallenari, 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 .^a b c d Gutierrez-Moreno, Adelina; Moreno, Hugo (June 1968), "A photometric investigation of the Scorpio-Centaurus association",Astrophysical Journal Supplement ,15 : 459,Bibcode :1968ApJS...15..459G ,doi :10.1086/190168 ^a b Bauwens, E. K. J.; et al. (2010), "Candidate Calibrators for the In-Orbit Spectrophotometric Calibration of the MIRI Medium Resolution Spectrograph Onboard the James Webb Space Telescope", in Deustua, Susana; Oliveira, Cristina (eds.),The 2010 STScI Calibration Workshop (PDF) ,Space Telescope Science Institute , retrieved2016-01-10 . ^ de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project",Astronomy & Astrophysics ,546 : 14,arXiv :1208.3048 Bibcode :2012A&A...546A..61D ,doi :10.1051/0004-6361/201219219 ,S2CID 59451347 , A61. ^a b c d David, 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 . ^a b Pasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)",Astronomy and Astrophysics ,367 (3rd ed.):521– 524,arXiv :astro-ph/0012289 Bibcode :2001A&A...367..521P ,doi :10.1051/0004-6361:20000451 ,S2CID 425754 . ^a b McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars",Monthly Notices of the Royal Astronomical Society ,427 (1):343– 57,arXiv :1208.2037 Bibcode :2012MNRAS.427..343M ,doi :10.1111/j.1365-2966.2012.21873.x S2CID 118665352 . ^a b Uesugi, Akira; Fukuda, Ichiro (1970), "Catalogue of rotational velocities of the stars",Contributions from the Institute of Astrophysics and Kwasan Observatory , University of Kyoto,Bibcode :1970crvs.book.....U . ^ "ksi01 Cen" ,SIMBAD Centre de données astronomiques de Strasbourg , retrieved2017-01-09 .^ Eggleton, 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 . ^ Gontcharov, G. A. (November 2012), "Spatial distribution and kinematics of OB stars",Astronomy Letters ,38 (11):694– 706,arXiv :1606.09028 Bibcode :2012AstL...38..694G ,doi :10.1134/S1063773712110035 ,S2CID 119108982 . ^ O'Meara, Stephen James (2016),Deep-Sky Companions: The Caldwell Objects Cambridge University Press , p. 392,ISBN 978-1316033531
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