Star in the constellation Norma
For other stars with this Bayer designation , see γ Normae .
Gamma Normae , Latinized from γ Normae , is a single, yellow-white hued star in the southern constellation of Norma . It is faintly visible to the naked eye with an apparent visual magnitude of 4.98. The annual parallax shift is only 2.22±0.27 mas as measured from Earth, which yields a rough distance estimate of 1,500 light years from the Sun. It is moving closer to the Sun with a radial velocity of around -16 km/s.
This is an F-type supergiant star with a stellar classification of F9 Ia It has 6.6 times the mass of the Sun and has expanded to about 160 times the Sun's radius . The star is radiating 2,040 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 6,068 K. It is estimated to be around 53 million years old.
γ Nor is a nearby star nearly a magnitude brighter.
References
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^ Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues . 2237 . Bibcode :2002yCat.2237....0D .
^ Kovtyukh, V. V.; Chekhonadskikh, F. A.; Luck, R. E.; Soubiran, C.; Yasinskaya, M. P.; Belik, S. I. (2010). "Accurate luminosities for F-G supergiants from FeII/FeI line depth ratios" . Monthly Notices of the Royal Astronomical Society . 408 (3): 1568. Bibcode :2010MNRAS.408.1568K . doi :10.1111/j.1365-2966.2010.17217.x .
^ 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.
^ Tetzlaff, N.; Neuhäuser, R.; Hohle, M. M. (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 .
^ Pasinetti Fracassini, L. E.; et al. (2001). "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)". Astronomy and Astrophysics . 367 (2) (Third ed.): 521. arXiv :astro-ph/0012289 . Bibcode :2001A&A...367..521P . doi :10.1051/0004-6361:20000451 . S2CID 425754 .
^ 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 . S2CID 119257644 . Vizier catalog entry
^ Kovtyukh, V. V.; Gorlova, N. I.; Belik, S. I. (2012). "Accurate luminosities from the oxygen λ7771-4 Å triplet and the fundamental parameters of F-G supergiants" . Monthly Notices of the Royal Astronomical Society . 423 (4): 3268–73. arXiv :1204.4115 . Bibcode :2012MNRAS.423.3268K . doi :10.1111/j.1365-2966.2012.21117.x . S2CID 118683158 .
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 .
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Gamma Normae
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Location of γ Nor (circled)
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