49 Arietis

Last updated
49 Arietis
Observation data
Epoch J2000       Equinox J2000
Constellation Aries
Right ascension 03h 01m 54.14125s [1]
Declination +26° 27′ 44.4746″ [1]
Apparent magnitude  (V)5.90 [2]
Characteristics
Evolutionary stage main sequence [1]
Spectral type kA2hA6mA7 [3]
U−B color index +0.12 [2]
B−V color index +0.141±0.006 [4]
Astrometry
Radial velocity (Rv)−1.0 [5] km/s
Proper motion (μ)RA: −14.323 [1] mas/yr
Dec.: +5.160 [1] mas/yr
Parallax (π)14.6587±0.0844  mas [1]
Distance 223 ± 1  ly
(68.2 ± 0.4  pc)
Absolute magnitude  (MV)1.87 [4]
Details
Mass 1.9 [1]   M☉
Radius 2.0 [1]   R☉
Luminosity 16.1 [1]   L☉
Surface gravity (log g)4.34 [6]   cgs
Temperature 8,424 [6]   K
Metallicity [Fe/H]−0.02 [6]   dex
Rotational velocity (v sin i)52 [5]  km/s
Age 704 [1]   Myr
Other designations
49 Ari, NSV 1021, BD+25°477, HD 18769, HIP 14109, HR 905, SAO 75693 [7]
Database references
SIMBAD data

49 Arietis is a single [8] star in the northern constellation of Aries. 49 Arietis is the Flamsteed designation. It is visible to the naked eye as a faint, white hued star with an apparent visual magnitude of 5.90. [2] The star is located at a distance of about 223 light-years (68 parsecs ) distant from Earth based on parallax.

This object is classified as an Am star, [9] or non-magnetic chemically peculiar star of the CP1 [10] class, which means the spectrum displays abnormal abundances of certain heavier elements. It has a stellar classification of kA2hA6mA7, which means it has the calcium K line of an A2 class star, the hydrogen lines of an A6 star, and the metal lines of an A7 star. 49 Arietis has a moderately high rate of spin, showing a projected rotational velocity of 52 km/s, and is radiating 16 times the luminosity of the Sun from its photosphere at an effective temperature of 8,424  K .

References

  1. 1 2 3 4 5 6 7 8 9 10 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 .
  2. 1 2 3 Oja, T. (April 1983), "UBV photometry of FK4 and FK4 supplement stars", Astronomy and Astrophysics Supplement Series, 52: 131–134, Bibcode:1983A&AS...52..131O.
  3. ↑ Abt, Helmut A.; Morrell, Nidia I. (1995), "The Relation between Rotational Velocities and Spectral Peculiarities among A-Type Stars", Astrophysical Journal Supplement, 99: 135, Bibcode:1995ApJS...99..135A, doi: 10.1086/192182 .
  4. 1 2 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.
  5. 1 2 Wielen, R.; et al. (1999), "Sixth Catalogue of Fundamental Stars (FK6). Part I. Basic fundamental stars with direct solutions", Veroeffentlichungen des Astronomischen Rechen-Instituts Heidelberg, 35 (35), Astronomisches Rechen-Institut Heidelberg: 1, Bibcode:1999VeARI..35....1W.
  6. 1 2 3 Koleva, M.; Vazdekis, A. (February 2012), "Stellar population models in the UV. I. Characterisation of the New Generation Stellar Library", Astronomy & Astrophysics, 538: A143, arXiv: 1111.5449 , Bibcode:2012A&A...538A.143K, doi:10.1051/0004-6361/201118065, S2CID   53999614.
  7. ↑ "49 Ari". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2019-06-03.
  8. ↑ Eggleton, P. P.; Tokovinin, A. A. (2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869, arXiv: 0806.2878 , Bibcode:2008MNRAS.389..869E, doi: 10.1111/j.1365-2966.2008.13596.x , S2CID   14878976.
  9. ↑ Cowley, A.; et al. (April 1969), "A study of the bright A stars. I. A catalogue of spectral classifications", Astronomical Journal, 74: 375–406, Bibcode:1969AJ.....74..375C, doi:10.1086/110819.
  10. ↑ Paunzen, E.; et al. (February 2013), "A photometric study of chemically peculiar stars with the STEREO satellites - II. Non-magnetic chemically peculiar stars", Monthly Notices of the Royal Astronomical Society, 429 (1): 119–125, arXiv: 1211.1535 , Bibcode:2013MNRAS.429..119P, doi: 10.1093/mnras/sts318 , S2CID   119231581.
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