16 Persei

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16 Persei
Perseus constellation map.svg
Red circle.svg
Location of 16 Persei (circled)
Observation data
Epoch J2000       Equinox J2000
Constellation Perseus
Right ascension 02h 50m 35.05979s [1]
Declination 38° 19′ 07.1080″ [1]
Apparent magnitude  (V)4.22 [2]
Characteristics
Spectral type F2III [3]
U−B color index +0.08 [4]
B−V color index +0.34 [4]
Variable type δ Sct(?) [5] [6]
Astrometry
Radial velocity (Rv)+14.00 [7]  km/s
Proper motion (μ)RA: +195.77 [1]   mas/yr
Dec.: −109.98 [1]   mas/yr
Parallax (π)27.01 ± 0.19  mas [1]
Distance 120.8 ± 0.8  ly
(37.0 ± 0.3  pc)
Absolute magnitude  (MV)1.38 [2]
Details
Mass 1.80 [8]   M☉
Radius 3.2 [9]   R☉
Luminosity 23.36 [2]   L☉
Surface gravity (log g)3.72 [10]   cgs
Temperature 7,004 [10]   K
Metallicity [Fe/H]−0.04 [2]   dex
Rotational velocity (v sin i)149 [3]  km/s
Age 1.44 [8]   Gyr
Other designations
16 Per, NSV  956, BD+37°646, FK5  2194, GC  3401, HD  17584, HIP  13254, HR  840, SAO  55928, CCDM J02506+3818A, LTT  10924 [11]
Database references
SIMBAD data

16 Persei is a single, [12] suspected variable star [6] in the northern constellation of Perseus, located approximately 121 light years away based on parallax. [1] It is visible to the naked eye as a yellow-white hued star with an apparent visual magnitude of 4.22. [2] This object is moving further from the Earth with a heliocentric radial velocity of +14 km/s. [7] It displays a relatively high proper motion, traversing the celestial sphere at the rate of 0.224″ per year. [13]

A light curve for 16 Persei, plotted from TESS data 16PerLightCurve.png
A light curve for 16 Persei, plotted from TESS data

Based upon a stellar classification of F2 III, [3] this matches an aging giant star that has exhausted the hydrogen at its core and is evolving away from the main sequence. It is a possible pulsating Delta Scuti variable, although there is some uncertainty about this classification. [6] However, Kunzli and North (1998) found no variation. [15] The star is 1.44 [8]  billion years old with 1.8 [8] times the mass of the Sun and 3.2 [9] times the Sun's radius. It shows a high rotation rate with a projected rotational velocity of 149 km/s, [3] which is causing an equatorial bulge that is an estimated 24% larger than the polar radius. [16] 16 Persei is radiating 23 [2] times the Sun's luminosity from its photosphere at an effective temperature of 7,004 K. [10]

It has two reported visual companions: B, with magnitude 12.8 and separation 76.7", and C, with magnitude 10.43 and separation 234". [17]

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<span class="mw-page-title-main">9 Persei</span> Blue supergiant star in the constellation Perseus

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<span class="mw-page-title-main">42 Persei</span> Binary star system in the constellation Perseus

42 Persei is a binary star system in the northern constellation of Perseus. It has the Bayer designation n Persei, while 42 Persei is the Flamsteed designation. The system is visible to the naked eye as a dim, white-hued point of light with an apparent visual magnitude of 5.11. It is located around 93 parsecs (302 ly) distant from the Sun, but is drifting closer with a radial velocity of −12.4 km/s.

<span class="mw-page-title-main">43 Persei</span> Spectroscopic binary star system in the constellation Perseus

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<span class="mw-page-title-main">31 Persei</span> Star in the constellation Perseus

31 Persei is a single star in the northern constellation of Perseus. It is visible to the naked eye as a dim, blue-white hued point of light with an apparent visual magnitude of 5.05. This star is located around 172 parsecs (560 ly) away from the Sun, and it is drifting closer with a radial velocity of −1.6 km/s. It is likely a member of the Alpha Persei Cluster.

References

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  2. 1 2 3 4 5 6 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
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  4. 1 2 Mallama, A. (2014). "Sloan Magnitudes for the Brightest Stars". The Journal of the American Association of Variable Star Observers. 42 (2): 443. Bibcode:2014JAVSO..42..443M. Vizier catalog entry
  5. ↑ "NSV 956". The International Variable Star Index. AAVSO – American Association of Variable Star Observers. Retrieved 17 February 2019.
  6. 1 2 3 Samus, N. N.; et al. (2017). "General Catalogue of Variable Stars". Astronomy Reports. 5.1. 61 (1): 80–88. Bibcode:2017ARep...61...80S. doi:10.1134/S1063772917010085. S2CID   125853869.
  7. 1 2 Wilson, R. E. (1953). "General Catalogue of Stellar Radial Velocities". Carnegie Institute Washington D.C. Publication. Carnegie Institution for Science. Bibcode:1953GCRV..C......0W. LCCN   54001336.
  8. 1 2 3 4 Luck, R. Earle (2015), "Abundances in the Local Region. I. G and K Giants", Astronomical Journal, 150 (3), 88, arXiv: 1507.01466 , Bibcode:2015AJ....150...88L, doi:10.1088/0004-6256/150/3/88, S2CID   118505114.
  9. 1 2 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. Vizier catalog entry
  10. 1 2 3 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. Vizier catalog entry
  11. ↑ "16 Per". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2019-04-01.
  12. ↑ 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.
  13. ↑ Lépine, Sébastien; Shara, Michael M. (March 2005), "A Catalog of Northern Stars with Annual Proper Motions Larger than 0.15" (LSPM-NORTH Catalog)", The Astronomical Journal, 129 (3): 1483–1522, arXiv: astro-ph/0412070 , Bibcode:2005AJ....129.1483L, doi:10.1086/427854, S2CID   2603568.
  14. ↑ "MAST: Barbara A. Mikulski Archive for Space Telescopes". Space Telescope Science Institute. Retrieved 24 May 2023.
  15. ↑ Kunzli, M.; North, P. (January 1998). "Are metallic A-F giants evolved AM stars? Rotation and rate of binaries among giant F stars". Astronomy and Astrophysics Supplement. 127 (2): 277–294. arXiv: astro-ph/9710226 . Bibcode:1998A&AS..127..277K. doi:10.1051/aas:1998350. S2CID   7535170.
  16. ↑ 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.
  17. ↑ Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. (2001). "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog". The Astronomical Journal. 122 (6): 3466. Bibcode:2001AJ....122.3466M. doi: 10.1086/323920 . Vizier catalog entry
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