23 Andromedae

23 Andromedae
Location of 23 Andromedae (circled)
Observation data
Epoch J2000      Equinox ICRS
Constellation Andromeda
Right ascension 00h 13m 30.83999s
Declination +41° 02′ 07.3358″
Apparent magnitude (V) 5.71
Characteristics
Evolutionary stage main sequence
Spectral type F0 IV
B−V color index +0.331±0.004
Astrometry
Radial velocity (Rv)−27.1±1.2 km/s
Proper motion (μ) RA: −123.558 mas/yr
Dec.: −146.479 mas/yr
Parallax (π)26.8715±0.0403 mas
Distance121.4 ± 0.2 ly
(37.21 ± 0.06 pc)
Absolute magnitude (MV)+3.01
Details
Mass1.51 M☉
Radius1.66 R☉
Luminosity5.7 L☉
Surface gravity (log g)4.17 cgs
Temperature6,921 K
Metallicity [Fe/H]−0.13±0.07 dex
Rotational velocity (v sin i)36 km/s
Age2.2 Gyr
Other designations
23 And, BD+40°29, FK5 2010, HD 905, HIP 1086, HR 41, SAO 36173, PPM 42707
Database references
SIMBADdata

23 Andromedae, abbreviated 23 And, is a presumed single star in the constellation Andromeda, although it has been a suspected spectroscopic binary. 23 Andromedae is the Flamsteed designation. Its apparent visual magnitude is 5.71, which indicates it is dimly visible to the naked eye under good viewing conditions. The distance to 23 And, as determined from its annual parallax shift of 26.9 mas, is 121.4 light-years. The star is moving further from the Earth with a heliocentric radial velocity of −27 km/s. It has a relatively high proper motion, traversing the celestial sphere at the rate of 0.191″ per year.

The stellar classification of 23 And is F0 IV, matching an F-type subgiant star that is in the process of evolving into a red giant. It displays a slight microvariability with a frequency of 0.85784 d−1 and an amplitude of 0.0062 magnitude. The star is around 2.2 billion years old with a projected rotational velocity of 36 km/s. It has 1.51 times the mass of the Sun and is radiating 5.7 times the Sun's luminosity from its photosphere at an effective temperature of 6,921 K.

References

  1. 1 2 3 4 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. XHIP record for this object at VizieR.
  2. 1 2 3 4 5 6 7 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  3. 1 2 3 4 Zorec, J.; Royer, F. (2012), "Rotational velocities of A-type stars. IV. Evolution of rotational velocities", Astronomy & Astrophysics, 537: A120, arXiv:1201.2052, Bibcode:2012A&A...537A.120Z, doi:10.1051/0004-6361/201117691, S2CID 55586789.
  4. 1 2 de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics, 546: 14, arXiv:1208.3048, Bibcode:2012A&A...546A..61D, doi:10.1051/0004-6361/201219219, S2CID 59451347, A61.
  5. ↑ Holmberg, J.; Nordström, B.; Andersen, J. (July 2009), "The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics", Astronomy and Astrophysics, 501 (3): 941–947, arXiv:0811.3982, Bibcode:2009A&A...501..941H, doi:10.1051/0004-6361/200811191, S2CID 1185775111
  6. 1 2 3 4 5 6 Stassun, Keivan G.; Oelkers, Ryan J.; Paegert, Martin; et al. (2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv:1905.10694. Bibcode:2019AJ....158..138S. doi:10.3847/1538-3881/ab3467.
  7. ↑ Gáspár, András; Rieke, George H.; Ballering, Nicholas (August 2016), "The Correlation between Metallicity and Debris Disk Mass", The Astrophysical Journal, 826 (2): 14, arXiv:1604.07403, Bibcode:2016ApJ...826..171G, doi:10.3847/0004-637X/826/2/171, S2CID 119241004, 171.
  8. 1 2 Zuckerman, Anna; Ko, Zoe; Isaacson, Howard; Croft, Steve; Price, Danny; Lebofsky, Matt; Siemion, Andrew (2023). "The Breakthrough Listen Search for Intelligent Life: A Laser Search Pipeline for the Automated Planet Finder". The Astronomical Journal. 165 (3): 114. arXiv:2301.06971. Bibcode:2023AJ....165..114Z. doi:10.3847/1538-3881/acb342.
  9. ↑ "23 And". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved September 21, 2018.
  10. ↑ 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.
  11. ↑ Blanco, C.; Bruca, L.; Catalano, S.; Marilli, E. (November 1982), "Chromospheric MG II emission in A5 to K5 main sequence stars from high resolution IUE spectra", Astronomy and Astrophysics, 115 (2): 280–292, Bibcode:1982A&A...115..280B.
  12. ↑ 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.
  13. ↑ Koen, Chris; Eyer, Laurent (2002), "New periodic variables from the Hipparcos epoch photometry", Monthly Notices of the Royal Astronomical Society, 331 (1): 45–59, arXiv:astro-ph/0112194, Bibcode:2002MNRAS.331...45K, doi:10.1046/j.1365-8711.2002.05150.x, S2CID 10505995