35 Arietis

35 Arietis
Diagram showing star positions and boundaries of the Aries constellation and its surroundings


Location of 35 Arietis

Observation data
Epoch J2000      Equinox J2000
Constellation Aries
Right ascension 02h 43m 27.11185s[1]
Declination +27° 42′ 25.7233″[1]
Apparent magnitude (V) 4.64[2]
Characteristics
Spectral type B3 V[3]
U−B color index –0.62[4]
B−V color index –0.14[4]
Astrometry
Radial velocity (Rv)+13[5] km/s
Proper motion (μ) RA: 2.06[1] mas/yr
Dec.: –10.37[1] mas/yr
Parallax (π)9.51 ± 0.85[1] mas
Distance340 ± 30 ly
(105 ± 9 pc)
Details
Mass5.7 ± 0.3[6] M☉
Radius2.2–3.9[7] R☉
Luminosity870[8] L☉
Temperature17,520[9] K
Rotational velocity (v sin i)90[10] km/s
Age5.5 ± 4.7[6] Myr
Other designations
BD+27 424, FK5 94, HD 16908, HIP 12719, HR 801, SAO 75532.[2]

35 Arietis (abbreviated 35 Ari) is a binary star[11] in the northern constellation of Aries. 35 Arietis is the Flamsteed designation. It is approximately 340 light-years (100 parsecs) distant from the Earth, based upon an annual parallax shift of 9.51 mas.[1] This star is visible to the naked eye with an apparent visual magnitude of 4.64.[2]

This is a single-lined spectroscopic binary system, with the presence of a companion being demonstrated by shifts in the spectrum of the primary component.[12] The pair orbit each other with a period of 490.0 days and an eccentricity of 0.14.[11] The primary is a B-type main-sequence star with a stellar classification of B3 V.[3] With a mass around 5.7 times that of the Sun, it is radiating 870[8] times the Sun's luminosity. This energy is being emitted from the outer atmosphere at an effective temperature of 17,520 K,[9] causing it to shine with the blue-white hue of a B-type star.[13]

References

  1. 1 2 3 4 5 6 van Leeuwen, Floor (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752v1Freely accessible, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357. Note: see VizieR catalogue I/311.
  2. 1 2 3 "35 Ari -- Star", SIMBAD, Centre de Données astronomiques de Strasbourg, retrieved 2012-08-15.
  3. 1 2 Borgman, J. (December 1960), "Seven-Colour Photometry of O, B and A Stars", Bulletin of the Astronomical Institutes of the Netherlands, 15: 255, Bibcode:1960BAN....15..255B.
  4. 1 2 Crawford, D. L.; Barnes, J. V.; Golson, J. C. (1971), "Four-color, Hbeta, 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.
  5. ↑ Evans, D. S. (June 20–24, 1966). "The Revision of the General Catalogue of Radial Velocities". In Batten, Alan Henry; Heard, John Frederick. Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30. University of Toronto: International Astronomical Union (published 1967). pp. 57–63. Bibcode:1967IAUS...30...57E.
  6. 1 2 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:1007.4883Freely accessible, Bibcode:2011MNRAS.410..190T, doi:10.1111/j.1365-2966.2010.17434.x.
  7. ↑ Pasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics", Astronomy and Astrophysics, 367: 521–524, arXiv:astro-ph/0012289Freely accessible, Bibcode:2001A&A...367..521P, doi:10.1051/0004-6361:20000451.
  8. 1 2 Hohle, M. M.; Neuhäuser, R.; Schutz, B. F. (April 2010), "Masses and luminosities of O- and B-type stars and red supergiants", Astronomische Nachrichten, 331 (4): 349, arXiv:1003.2335Freely accessible, Bibcode:2010AN....331..349H, doi:10.1002/asna.200911355.
  9. 1 2 Zorec, J.; et al. (July 2009), "Fundamental parameters of B supergiants from the BCD system. I. Calibration of the (λ_1, D) parameters into Teff", Astronomy and Astrophysics, 501 (1): 297–320, arXiv:0903.5134Freely accessible, Bibcode:2009A&A...501..297Z, doi:10.1051/0004-6361/200811147.
  10. ↑ 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.
  11. 1 2 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:0806.2878Freely accessible, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x.
  12. ↑ van Rensbergen, W.; De Loore, C.; Jansen, K. (February 2006), "Evolution of interacting binaries with a B type primary at birth", Astronomy and Astrophysics, 446 (3): 1071–1079, Bibcode:2006A&A...446.1071V, doi:10.1051/0004-6361:20053543.
  13. ↑ "The Colour of Stars", Australia Telescope, Outreach and Education, Commonwealth Scientific and Industrial Research Organisation, December 21, 2004, retrieved 2012-01-16.

External links

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