Phi Fornacis

Phi Fornacis
Observation data
Epoch J2000      Equinox J2000
Constellation Fornax
Right ascension 02h 28m 01.70338s[1]
Declination −33° 48′ 39.7450″[1]
Apparent magnitude (V) 5.13 [2]
Characteristics
Spectral type A2.5V[3]
B−V color index +0.08[2]
Astrometry
Radial velocity (Rv)+19.00[4] km/s
Proper motion (μ) RA: +18.99[2] mas/yr
Dec.: +5.13[2] mas/yr
Parallax (π)21.46 ± 0.27[1] mas
Distance152 ± 2 ly
(46.6 ± 0.6 pc)
Absolute magnitude (MV)≤ 1.79[5]
Details
Mass2.11[6] M☉
Surface gravity (log g)4.27[6] cgs
Temperature9,449±321[6] K
Age238[6] Myr
Other designations
CD−34° 905, FK5 2168, GC 2967, HIP 11477, HR 724, HD 15427, SAO 193723[2]
Database references
SIMBADdata

Phi Fornacis (φ For) is a class A2.5V[3] (white main-sequence) star in the constellation Fornax. Its apparent magnitude is 5.13[2] and it is approximately 152.0 light years away based on parallax.[1] It shines with a luminosity approximately 16 times that of the Sun and has a surface temperature of 8900 K.[7] It is around 1.6 times as massive as the Sun and there is evidence of a circumstellar disk.[8]

References

  1. 1 2 3 4 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. Vizier catalog entry
  2. 1 2 3 4 5 6 "* phi For". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2016-04-06.
  3. 1 2 Abt, Helmut A.; Morrell, Nidia I. (July 1995), "The relation between Rotational Velocities and Spectral Peculiarities among A-type stars", The Astrophysical Journal Supplement Series, 99: 135–172, Bibcode:1995ApJS...99..135A, doi:10.1086/192182
  4. ↑ Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065.
  5. ↑ Lower bound on the absolute magnitude calculated as , where is the star's absolute magnitude, is the star's apparent magnitude, and is the star's measured parallax in arcseconds.
  6. 1 2 3 4 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.
  7. ↑ McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (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.
  8. ↑ Chen, Christine H.; Mittal, Tushar; Kuchner, Marc; Forrest, William J.; Lisse, Carey M.; Manoj, P.; Sargent, Benjamin A.; Watson, Dan M. (2014). "The Spitzer Infrared Spectrograph Debris Disk Catalog. I. Continuum Analysis of Unresolved Targets". The Astrophysical Journal Supplement. 211 (2): 22. Bibcode:2014ApJS..211...25C. doi:10.1088/0067-0049/211/2/25. 25.


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