Phi Fornacis

Phi Fornacis
Observation data; Epoch J2000 Equinox J2000
Constellation	Fornax
Right ascension	02h 28m 01.70338s
Declination	−33° 48′ 39.7450″
Apparent magnitude (V)	5.13
Characteristics
Spectral type	A2.5V
B−V color index	+0.08
Astrometry
Radial velocity (Rv)	+19.00 km/s
Proper motion (μ)	RA: +18.99 mas/yr ; Dec.: +5.13 mas/yr
Parallax (π)	21.46 ± 0.27 mas
Distance	152 ± 2 ly ; (46.6 ± 0.6 pc)
Absolute magnitude (MV)	≤ 1.79
Details
Mass	2.11 M☉
Surface gravity (log g)	4.27 cgs
Temperature	9,449±321 K
Age	238 Myr
Other designations
	CD−34° 905, FK5 2168, GC 2967, HIP 11477, HR 724, HD 15427, SAO 193723
Database references
SIMBAD	data

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

^ ^a ^b ^c ^d 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
^ ^a ^b ^c ^d ^e ^f "* phi For". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2016-04-06.
^ ^a ^b 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
^ 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.
^ Lower bound on the absolute magnitude calculated as $M=m+5(1+\log _{10}{p})\!\,$ , where $M$ is the star's absolute magnitude, $m$ is the star's apparent magnitude, and $p$ is the star's measured parallax in arcseconds.
^ ^a ^b ^c ^d 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.
^ 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.
^ 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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[vanLeeuwen2007-1] 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

[SIMBAD-2] ^ ^a ^b ^c ^d ^e ^f "* phi For". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2016-04-06.

[Abt1995-3] 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

[Gontcharov2006-4] 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 $M=m+5(1+\log _{10}{p})\!\,$ , where $M$ is the star's absolute magnitude, $m$ is the star's apparent magnitude, and $p$ is the star's measured parallax in arcseconds.

[David2015-6] 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.

[Mcdonald-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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Observation data Epoch J2000 Equinox J2000
Constellation	Fornax
Right ascension	02^h 28^m 01.70338^s^[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 (R_v)	+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 mas^[1]
Distance	152 ± 2 ly (46.6 ± 0.6 pc)
Absolute magnitude (M_V)	≤ 1.79^[5]

Details

Mass	2.11^[6] `M`_☉
Surface gravity (log g)	4.27^[6] cgs
Temperature	9,449±321^[6] K
Age	238^[6] Myr

Other designations
CD−34° 905, FK5 2168, GC 2967, HIP 11477, HR 724, HD 15427, SAO 193723^[2]
Database references
SIMBAD	data