23 Andromedae
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Andromeda[1] |
| Right ascension | 00h 13m 30.83999s[2] |
| Declination | +41° 02′ 07.3358″[2] |
| Apparent magnitude (V) | 5.71[1] |
| Characteristics | |
| Evolutionary stage | main sequence[2] |
| Spectral type | F0 IV[3] |
| B−V color index | +0.331±0.004[1] |
| Astrometry | |
| Radial velocity (Rv) | −27.1±1.2[4] km/s |
| Proper motion (μ) | RA: −123.558[2] mas/yr Dec.: −146.479[2] mas/yr |
| Parallax (π) | 26.8715±0.0403 mas[2] |
| Distance | 121.4 ± 0.2 ly (37.21 ± 0.06 pc) |
| Absolute magnitude (MV) | +3.01[5] |
| Details | |
| Mass | 1.51[6] M☉ |
| Radius | 1.66[6] R☉ |
| Luminosity | 5.7[6] L☉ |
| Surface gravity (log g) | 4.17[6] cgs |
| Temperature | 6,921[6] K |
| Metallicity [Fe/H] | −0.13±0.07[7] dex |
| Rotational velocity (v sin i) | 36[3] km/s |
| Age | 2.2[8] Gyr |
| Other designations | |
| 23 And, BD+40°29, FK5 2010, HD 905, HIP 1086, HR 41, SAO 36173, PPM 42707[9] | |
| Database references | |
| SIMBAD | data |
23 Andromedae, abbreviated 23 And, is a presumed single[10] star in the constellation Andromeda, although it has been a suspected spectroscopic binary.[11] 23 Andromedae is the Flamsteed designation. Its apparent visual magnitude is 5.71,[1] 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,[2] is 121.4 light years. The star is moving further from the Earth with a heliocentric radial velocity of −27 km/s.[4] It has a relatively high proper motion, traversing the celestial sphere at the rate of 0.191″ per year.[12]
The stellar classification of 23 And is F0 IV,[3] 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.[13] The star is around 2.2 billion years old[8] with a projected rotational velocity of 36 km/s.[3] 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.[6]
References
- ^ a b c d 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.
- ^ a b c d e f g 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.
- ^ a b c d 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.
- ^ a b 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.
- ^ Holmberg, J.; et al. (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
- ^ a b c d e f Stassun, Keivan G.; 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.
- ^ Gáspár, András; et al. (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.
- ^ a b 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.
- ^ "23 And". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved September 21, 2018.
- ^ 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.
- ^ Blanco, C.; et al. (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.
- ^ 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.
- ^ 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