49 Arietis
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aries |
| Right ascension | 03h 01m 54.14148s[1] |
| Declination | +26° 27′ 44.4799″[1] |
| Apparent magnitude (V) | 5.90[2] |
| Characteristics | |
| 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: −14.509[1] mas/yr Dec.: +4.810[1] mas/yr |
| Parallax (π) | 14.9367 ± 0.1377 mas[1] |
| Distance | 218 ± 2 ly (66.9 ± 0.6 pc) |
| Absolute magnitude (MV) | 1.87[4] |
| Details | |
| Radius | 1.9[6] R☉ |
| Luminosity | 14.99[4] L☉ |
| Surface gravity (log g) | 4.34[7] cgs |
| Temperature | 8,424[7] K |
| Metallicity [Fe/H] | –0.02[7] dex |
| Rotational velocity (v sin i) | 52[5] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
49 Arietis is a single[9] 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 218 light-years (67 parsecs) distant from Earth based on parallax.[1]
This object is classified as an Am star,[10] or non-magnetic chemically peculiar star of the CP1[11] class, which means the spectrum displays abnormal abundances of certain heavier elements. It has a stellar classification of kA2hA6mA7,[3] 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,[5] and is radiating 15[4] times the luminosity of the Sun from its photosphere at an effective temperature of 8,424 K.[7]
References
- ^ a b c d e f Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ a b c 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.
- ^ a b 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.
- ^ 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.
- ^ a b c Wielen, R.; et al. (1999), Sixth Catalogue of Fundamental Stars (FK6). Part I. Basic fundamental stars with direct solutions, Astronomisches Rechen-Institut Heidelberg, Bibcode:1999VeARI..35....1W.
- ^ Pasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)", Astronomy and Astrophysics, 367 (2) (Third ed.): 521–524, arXiv:astro-ph/0012289, Bibcode:2001A&A...367..521P, doi:10.1051/0004-6361:20000451.
- ^ a b c d 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.
- ^ "49 Ari". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-06-03.
- ^ 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.
{{citation}}: CS1 maint: unflagged free DOI (link) - ^ 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.
- ^ 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.
{{citation}}: CS1 maint: unflagged free DOI (link)
