Beta Volantis

Beta Volantis, of β Vol, is die helderste ster in die suidelike sterrebeeld Vlieënde Vis (Volans). Dit het ’n skynbare magnitude van 3,75^[3] en kan dus met die blote oog gesien word. Volgens parallaksmetings is dit sowat 107,5 ligjare van die Son af; dit beweeg weg teen ’n radiale snelheid van 27 km/s.^[8]

Beta Volantis
Die ligging van Beta Volantis (in die rooi sirkel).
Sterrebeeld	Vlieënde Vis
Spektraaltipe	K2 III[1]
Soort	Reusester
Waarnemingsdata (Epog J2000)
Regte klimming	08h 25m 44.19472s[2]
Deklinasie	-66° 08′ 12.8050″[2]
Skynmagnitude (m)	3,75[3]
Absolute magnitude (M)	1,18[4]
B-V-kleurindeks	+1,13[3]
Besonderhede
Massa (M☉)	1,62±0,20[5]
Ligsterkte (L☉)	41±3[5]
Temperatuur (K)	4 546[5]
Metaalinhoud [Fe/H]	-0,01[6]
Ander name
CD-65°648, GJ 3499, HD 71878, HIP 41312, HR 3347, SAO 250228[7]
Portaal    Sterrekunde

Dit is ’n oranje enkelster^[9] met ’n sterreklassifikasie van K2 III,^[1] wat aandui dit is ’n geëvolueerde K-tipe reusester. Dit is ’n rooiklontster,^[10] wat beteken dit lê op die horisontale tak en verbrand helium in sy kern. Beta Volantis se massa is sowat 1,6 keer dié van die Son,^[5] maar sy ligsterkte is 41 keer die Son s’n. Die effektiewe temperatuur van sy vergrote fotosfeer is 4 546 K.^[5]

Verwysings

1. Gray, R. O. et al. (2003), "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 Parsecs: The Northern Sample. I", The Astronomical Journal 126 (4): 2048, doi:10.1086/378365, Bibcode: 2003AJ....126.2048G.
2. van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, doi:10.1051/0004-6361:20078357, Bibcode: 2007A&A...474..653V.
3. Cousins, A. W. J. (1977), "Cape UBV magnitudes and colours of South circumpolar stars", South African Astronomical Observatory Circulars 1: 51, Bibcode: 1977SAAOC...1...51C.
4. Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters 38 (5): 331, doi:10.1134/S1063773712050015, Bibcode: 2012AstL...38..331A.
5. Stello, D. et al. (2008), "Oscillating K Giants with the WIRE Satellite: Determination of Their Asteroseismic Masses", The Astrophysical Journal Letters 674 (1): L53–L56, doi:10.1086/528936, Bibcode: 2008ApJ...674L..53S.
6. Heiter, U.; Jofré, P.; Gustafsson, B.; Korn, A. J.; Soubiran, C.; Thévenin, F. (2015), "Gaia FGK benchmark stars: Effective temperatures and surface gravities", Astronomy & Astrophysics 582: A49, doi:10.1051/0004-6361/201526319, Bibcode: 2015A&A...582A..49H.
7. "* bet Vol -- High proper-motion Star", SIMBAD (Centre de Données astronomiques de Strasbourg), http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=bet+Vol, besoek op 2019-07-02
8. Gontcharov, G. A. (November 2006), "Pulkovo Compilation of Radial Velocities for 35495 Hipparcos stars in a common system", Astronomy Letters 32 (11): 759–771, doi:10.1134/S1063773706110065, Bibcode: 2006AstL...32..759G.
9. 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, doi:10.1111/j.1365-2966.2008.13596.x, Bibcode: 2008MNRAS.389..869E.
10. Paczynski, B. et al. (September 1999), "The Optical Gravitational Lensing Experiment. UBVI Photometry of Stars in Baade's Window", Acta Astronomica 49: 319–339, Bibcode: 1999AcA....49..319P.

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