53 Arietis (abbreviated 53 Ari) is a variable star in the northern constellation of Aries. 53 Arietis is the Flamsteed designation; it also bears the variable star designation UW Arietis. It is a B-type main sequence star with a stellar classification of B1.5 V[3] and mean apparent magnitude of 6.10,[2] which is near the lower limit for naked eye visibility. Based upon an annual parallax shift of 3.2 mas, the estimated distance to this star is roughly 1,020 light-years (314 parsecs).
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aries |
| Right ascension | 03h 07m 25.67315s[1] |
| Declination | +17° 52′ 47.9696″[1] |
| Apparent magnitude (V) | 6.10[2] |
| Characteristics | |
| Spectral type | B1.5 V[3] |
| U−B color index | [4] 0.80[2] |
| B−V color index | −0.12[2] |
| Variable type | β Cep[4] |
| Astrometry | |
| Radial velocity (Rv) | +21.2[5] km/s |
| Proper motion (μ) | RA: −23.733[1] mas/yr Dec.: +8.080[1] mas/yr |
| Parallax (π) | 3.1874 ± 0.0630 mas[1] |
| Distance | 1,020 ± 20 ly (314 ± 6 pc) |
| Details | |
| Mass | 7.5±0.2[6] M☉ |
| Radius | 4.2[1] R☉ |
| Luminosity | 1,962[1] L☉ |
| Surface gravity (log g) | 3.99[1] cgs |
| Temperature | 19,065[1] K |
| Metallicity [Fe/H] | −0.18[1] dex |
| Rotational velocity (v sin i) | 5[7] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
The claimed variability of 53 Arietis has not been confirmed.[4][9] [10] It is a runaway star with a peculiar velocity of 48.1 km/s relative to its neighbors.[6] The star was ejected from the Orion nebula some 4–5 million years ago, possibly when an orbiting companion exploded as a supernova.[11]
References
edit- ^ a b c d e f g h i j 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 Crawford, D. L.; Barnes, J. V.; Golson, J. C. (1971), "Four-color, H-beta, and UBV photometry for bright B-type stars in the northern hemisphere", The Astronomical Journal, 76: 1058, Bibcode:1971AJ.....76.1058C, doi:10.1086/111220.
- ^ a b Lesh, Janet Rountree (December 1968), "The Kinematics of the Gould Belt: an Expanding Group?", Astrophysical Journal Supplement, 17: 371, Bibcode:1968ApJS...17..371L, doi:10.1086/190179.
- ^ a b c Stankov, Anamarija; Handler, Gerald (June 2005), "Catalog of Galactic β Cephei Stars", The Astrophysical Journal Supplement Series, 158 (2): 193–216, arXiv:astro-ph/0506495, Bibcode:2005ApJS..158..193S, doi:10.1086/429408, S2CID 119526948.
- ^ Evans, D. S. (June 20–24, 1966), "The Revision of the General Catalogue of Radial Velocities", in Batten, Alan Henry; Heard, John Frederick (eds.), Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30, vol. 30, University of Toronto: International Astronomical Union, p. 57, Bibcode:1967IAUS...30...57E.
- ^ a b Tetzlaff, N.; Neuhäuser, R.; Hohle, M. M. (January 2011), "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun", Monthly Notices of the Royal Astronomical Society, 410 (1): 190–200, arXiv:1007.4883, Bibcode:2011MNRAS.410..190T, doi:10.1111/j.1365-2966.2010.17434.x, S2CID 118629873.
- ^ Abt, Helmut A.; Levato, Hugo; Grosso, Monica (July 2002), "Rotational Velocities of B Stars", The Astrophysical Journal, 573 (1): 359–365, Bibcode:2002ApJ...573..359A, doi:10.1086/340590.
- ^ "53 Ari", SIMBAD, Centre de données astronomiques de Strasbourg, retrieved 2012-08-17.
- ^ "UW Ari". The International Variable Star Index. AAVSO. Retrieved 28 August 2024.
- ^ "UW Ari". General Catalog of Variable Stars. Lomonosov Moscow State University. Retrieved 28 August 2024.
- ^ Hoogerwerf, R.; de Bruijne, J. H. J.; de Zeeuw, P. T. (January 2001), "On the origin of the O and B-type stars with high velocities. II. Runaway stars and pulsars ejected from the nearby young stellar groups", Astronomy and Astrophysics, 365 (2): 49–77, arXiv:astro-ph/0010057, Bibcode:2001A&A...365...49H, doi:10.1051/0004-6361:20000014, S2CID 18970167.
External links
edit- Jerzykiewicz, Mikolaj (1974). "Photometry of UW ARIETIS and V600 Herculis". Publications of the Astronomical Society of the Pacific. 86 (509): 43. Bibcode:1974PASP...86...43J. doi:10.1086/129556.
- HR 938
- Image 53 Arietis