Star in the constellation Centaurus
This article is about G Centauri. For g Centauri, see
2 Centauri .
G Centauri is a single[ 10] star in the southernconstellation ofCentaurus . It is visible to the naked eye as a faint, blue-white hued star with anapparent visual magnitude of +4.82. This object is located approximately 450light years from the Sun, based onparallax .[ 2] Scorpius–Centaurus association , with the former having an age of about 17 million years.[ 11]
This object is aB-type main-sequence star with astellar classification of B3V(n),[ 3] lines due to rapid rotation. It is around 16[ 4] projected rotational velocity of up to 298 km/s.[ 8] [ 4] mass of the Sun and 3.4[ 5] Sun's radius . It is radiating 483[ 1] luminosity of the Sun from itsphotosphere at aneffective temperature of 13,732 K.[ 6] infrared excess indicates acircumstellar disk of dust with a mean temperature of 50 K is orbiting the star at a separation ofAU [ 5]
^a b c d e f g 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 f van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction",Astronomy and Astrophysics ,474 (2):653– 664,arXiv :0708.1752 Bibcode :2007A&A...474..653V ,doi :10.1051/0004-6361:20078357 ,S2CID 18759600 . ^a b Houk, Nancy (1978),Michigan catalogue of two-dimensional spectral types for the HD stars , vol. 2, Ann Arbor: Dept. of Astronomy, University of Michigan,Bibcode :1978mcts.book.....H . ^a b c d Tetzlaff, N.; et al. (January 2011), "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun",Monthly Notices of the Royal Astronomical Society ,410 (1):190– 200,arXiv :1007.4883 Bibcode :2011MNRAS.410..190T ,doi :10.1111/j.1365-2966.2010.17434.x S2CID 118629873 . ^a b c Cotten, Tara H.; Song, Inseok (July 2016), "A Comprehensive Census of Nearby Infrared Excess Stars",The Astrophysical Journal Supplement Series ,225 (1): 24,arXiv :1606.01134 Bibcode :2016ApJS..225...15C ,doi :10.3847/0067-0049/225/1/15 S2CID 118438871 , 15. ^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– 357,arXiv :1208.2037 Bibcode :2012MNRAS.427..343M ,doi :10.1111/j.1365-2966.2012.21873.x S2CID 118665352 . ^ Gáspár, András; et al. (2016), "The Correlation between Metallicity and Debris Disk Mass",The Astrophysical Journal ,826 (2): 171,arXiv :1604.07403 Bibcode :2016ApJ...826..171G ,doi :10.3847/0004-637X/826/2/171 S2CID 119241004 . ^a b Brown, A. G. A.; Verschueren, W. (1997), "High S/N Echelle spectroscopy in young stellar groups. II. Rotational velocities of early-type stars in SCO OB2",Astronomy and Astrophysics ,319 : 811,arXiv :astro-ph/9608089 Bibcode :1997A&A...319..811B . ^ "G Cen" .SIMBAD Centre de données astronomiques de Strasbourg . Retrieved2019-08-15 .^ 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 . ^ Jang-Condell, Hannah; et al. (August 2015), "Spitzer IRS Spectra of Debris Disks in the Scorpius–Centaurus OB Association",The Astrophysical Journal ,808 (2): 19,arXiv :1506.05428 Bibcode :2015ApJ...808..167J ,doi :10.1088/0004-637X/808/2/167 ,S2CID 118549483 , 167.
