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11 Orionis

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11 Orionis
Location of 11 Orionis (circled)
Observation data
EpochJ2000EquinoxJ2000
Constellation Orion
Right ascension 05h04m34.14916s[1]
Declination +15° 24′ 14.7771″[1]
Apparent magnitude(V) [2]4.65
Characteristics
Spectral type B9 IV[3]orA1 Vp SiCr[4]
U−Bcolor index −0.10[5]
B−Vcolor index −0.06[5]
Variable type α² CVn[2]
Astrometry
Radial velocity(Rv)+16.80[6]km/s
Proper motion(μ)RA:+17.80[1]mas/yr
Dec.:−31.15[1]mas/yr
Parallax(π)8.93 ± 0.24mas[1]
Distance365 ± 10ly
(112 ± 3pc)
Absolute magnitude(MV)−0.59[7]
Details
Radius3.6[8]R☉
Luminosity220[7]L☉
Temperature9,520[3]K
Rotational velocity(vsini)36[9]km/s
Other designations
11 Ori,V1032 Ori,BD+15°732,FK51140,GC6191,HD32549,HIP23607,HR1638,SAO94290[10]
Database references
SIMBADdata

11 Orionisis a solitary[11]Ap starin theequatorialconstellationofOrion,near the border withTaurus.It is visible to the naked eye with anapparent visual magnitudeof 4.65,[7]and it is located approximately 365light yearsaway from the Sun based on parallax.[1]The star is moving further from the Sun with a heliocentricradial velocityof +16.8 km/s.[6]

Alight curvefor V1032 Orionis, plotted fromTESSdata[12]

This object is achemically peculiar star,known as an Ap star, with enhancedsiliconandchromiumlinesin itsspectrum.[13]It is anα² CVn variable,ranging from 4.65 to 4.69 magnitude with a period of 4.64 days.[2]Themagnetic fieldmeasured frommetallines has a strength of+160±390G.[14]

References

[edit]
  1. ^abcdefVan Leeuwen, F. (2007). "Validation of the new Hipparcos reduction".Astronomy and Astrophysics.474(2): 653–664.arXiv:0708.1752.Bibcode:2007A&A...474..653V.doi:10.1051/0004-6361:20078357.S2CID18759600.Vizier catalog entry
  2. ^abcSamus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)".VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S.1.Bibcode:2009yCat....102025S.
  3. ^abZorec, J.; Cidale, L.; Arias, M. L.; Frémat, Y.; Muratore, M. F.; Torres, A. F.; Martayan, C. (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:0903.5134.Bibcode:2009A&A...501..297Z.doi:10.1051/0004-6361/200811147.S2CID14969137.
  4. ^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.
  5. ^abMermilliod, J. C. (2006). "VizieR Online Data Catalog: Homogeneous Means in the UBV System (Mermilliod 1991)".VizieR On-line Data Catalog: II/168. Originally Published in: Institut d'Astronomie.2168.Bibcode:2006yCat.2168....0M.Vizier catalog entry
  6. ^abWilson, R. E. (1953). "General Catalogue of Stellar Radial Velocities".Carnegie Institute Washington D.C. Publication.Carnegie Institution for Science.Bibcode:1953GCRV..C......0W.ISBN9780598216885.LCCN54001336.
  7. ^abcAnderson, 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.S2CID119257644.Vizier catalog entry
  8. ^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.S2CID425754.
  9. ^Hoffleit, D.; Warren, W. H. (1995). "VizieR Online Data Catalog: Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)".VizieR On-line Data Catalog: V/50. Originally Published in: 1964BS....C......0H.5050.Bibcode:1995yCat.5050....0H.
  10. ^"11 Ori".SIMBAD.Centre de données astronomiques de Strasbourg.Retrieved8 September2012.
  11. ^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.S2CID14878976.
  12. ^"MAST: Barbara A. Mikulski Archive for Space Telescopes".Space Telescope Science Institute.Retrieved8 December2021.
  13. ^Stigler, Ch.; Maitzen, H. M.; Paunzen, E.; Netopil, M. (2014). "Spectrophotometric analysis of the 5200 Å region for peculiar and normal stars".Astronomy & Astrophysics.562:A65.arXiv:1402.1021.Bibcode:2014A&A...562A..65S.doi:10.1051/0004-6361/201322300.S2CID55166743.
  14. ^Romanyuk, I. I.; et al. (July 2016). "Results of magnetic field measurements of CP-stars performed with the 6-m telescope. III. Observations in 2009".Astrophysical Bulletin.71(3): 302–313.Bibcode:2016AstBu..71..302R.doi:10.1134/S1990341316030056.S2CID125202761.
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