Misplaced Pages

60 Herculis

Article snapshot taken from Wikipedia with creative commons attribution-sharealike license. Give it a read and then ask your questions in the chat. We can research this topic together.
White-hued star in the constellation Hercules
60 Herculis
Observation data
Epoch J2000      Equinox J2000
Constellation Hercules
Right ascension 17 05 22.69066
Declination +12° 44′ 26.9816″
Apparent magnitude (V) 4.871
Characteristics
Evolutionary stage main sequence
Spectral type A3V or A4IV
U−B color index +0.12
B−V color index +0.125±0.006
Astrometry
Radial velocity (Rv)−4.2±2 km/s
Proper motion (μ) RA: +49.805 mas/yr
Dec.: −12.030 mas/yr
Parallax (π)24.3967 ± 0.2232 mas
Distance134 ± 1 ly
(41.0 ± 0.4 pc)
Absolute magnitude (MV)1.83
Details
Mass1.93±0.01 M
Radius1.9 R
Luminosity17.159 L
Surface gravity (log g)4.19±0.03 cgs
Temperature8,299 K
Rotational velocity (v sin i)117 km/s
Age327 Myr
Other designations
60 Her, BD+12° 3142, FK5 635, HD 154494, HIP 83613, HR 6355, SAO 102584
Database references
SIMBADdata

60 Herculis is a single star located 134 light years away from the Sun in the northern constellation of Hercules, and is positioned just seven degrees away from Rasalgethi (Alpha Herculis). It is visible to the naked eye as a faint, white-hued star with an apparent visual magnitude of 4.871. This star is moving closer to the Earth with a heliocentric radial velocity of −4 km/s.

Abt and Morrell (1995) assigned this star a stellar classification of A3V, matching an ordinary A-type main-sequence star. However, earlier studies gave it a luminosity class of IV, which suggested it is a subdwarf star. It has a projected rotational velocity of 117 km/s, which is creating an equatorial bulge that is 5% larger than the star's polar radius. The star is 327 million years old with 1.9 times the Sun's mass. It is radiating 17 times the luminosity of the Sun from its photosphere at an effective temperature of 8,299 K.

References

  1. ^ Brown, 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 at VizieR.
  2. ^ Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H.
  3. ^ Zorec, J.; Royer, F. (2012). "Rotational velocities of A-type stars". Astronomy & Astrophysics. 537: A120. arXiv:1201.2052. Bibcode:2012A&A...537A.120Z. doi:10.1051/0004-6361/201117691. S2CID 55586789.
  4. ^ Abt, Helmut A.; Morrell, Nidia I. (1995). "The Relation between Rotational Velocities and Spectral Peculiarities among A-Type Stars". The Astrophysical Journal Supplement Series. 99: 135. Bibcode:1995ApJS...99..135A. doi:10.1086/192182.
  5. ^ Cowley, A.; et al. (April 1969). "A study of the bright A stars. I. A catalogue of spectral classifications". Astronomical Journal. 74: 375–406. Bibcode:1969AJ.....74..375C. doi:10.1086/110819.
  6. Mermilliod, J.-C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV Data. Bibcode:1986EgUBV........0M.
  7. ^ 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.
  8. ^ Wilson, Ralph Elmer (1953). "General catalogue of stellar radial velocities". Washington. Bibcode:1953GCRV..C......0W.
  9. Pasinetti Fracassini, L. E.; et al. (2001). "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics". Astronomy & Astrophysics. 367 (2): 521–24. arXiv:astro-ph/0012289. Bibcode:2001A&A...367..521P. doi:10.1051/0004-6361:20000451. S2CID 425754.
  10. Allende Prieto, C.; Lambert, D. L. (1999). "Fundamental parameters of nearby stars from the comparison with evolutionary calculations: masses, radii and effective temperatures". Astronomy and Astrophysics. 352: 555–562. arXiv:astro-ph/9911002. Bibcode:1999A&A...352..555A.
  11. ^ 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.
  12. ^ "60 Her". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-06-14.
  13. 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.
  14. Redfield, Seth; et al. (June 2007). "Spitzer Limits on Dust Emission and Optical Gas Absorption Variability around Nearby Stars with Edge-on Circumstellar Disk Signatures". The Astrophysical Journal. 661 (2): 944–971. arXiv:astro-ph/0703089. Bibcode:2007ApJ...661..944R. doi:10.1086/517516. S2CID 42241365.
  15. van Belle, Gerard T. (March 2012), "Interferometric observations of rapidly rotating stars", The Astronomy and Astrophysics Review, 20 (1): 51, arXiv:1204.2572, Bibcode:2012A&ARv..20...51V, doi:10.1007/s00159-012-0051-2, S2CID 119273474.
Constellation of Hercules
Stars
Bayer
Flamsteed
Variable
HR
HD
Other
Exoplanets
Star clusters
Nebulae
Galaxies
NGC
Other
Galaxy clusters
Astronomical events
Category
Categories: