Astronomy:HD 153201

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Short description: Star in the constellation Ara
HD 153201
Observation data
Equinox J2000.0]] (ICRS)
Constellation Ara
Right ascension  17h 01m 07.02279s[1]
Declination −56° 33′ 18.2902″[1]
Apparent magnitude (V) 6.38[2]
Characteristics
Spectral type B9 Si[3]
B−V color index 0.06[2]
Variable type α2 CVn
Astrometry
Radial velocity (Rv)0.2[4] km/s
Proper motion (μ) RA: −3.88[1] mas/yr
Dec.: −27.06[1] mas/yr
Parallax (π)4.99 ± 0.71[1] mas
Distanceapprox. 650 ly
(approx. 200 pc)
Details
Luminosity91[5] L
Temperature9,004[5] K
Other designations
CD-56° 6647, HD 153201, HIP 83269, SAO 244356.
Database references
SIMBADdata

HD 153201 is a Bp star in the southern constellation of Ara. It is chemically peculiar star that displays an anomalous abundance of the element silicon in its spectrum.[3] This is a suspected variable star of the type known as Alpha² Canum Venaticorum.[6] There is a magnitude 9.86 companion star at an angular separation of 2.30 along a position angle of 131°.[7]

References

  1. 1.0 1.1 1.2 1.3 1.4 van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, doi:10.1051/0004-6361:20078357, Bibcode2007A&A...474..653V. 
  2. 2.0 2.1 Høg, E. et al. (2000), "The Tycho-2 catalogue of the 2.5 million brightest stars", Astronomy and Astrophysics 355: L27, doi:10.1888/0333750888/2862, Bibcode2000A&A...355L..27H. 
  3. 3.0 3.1 Renson, P.; Manfroid, J. (May 2009), "Catalogue of Ap, HgMn and Am stars", Astronomy and Astrophysics 498 (3): 961–966, doi:10.1051/0004-6361/200810788, Bibcode2009A&A...498..961R, https://zenodo.org/record/890529 
  4. Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters 32 (11): 759–771. doi:10.1134/S1063773706110065. Bibcode2006AstL...32..759G. 
  5. 5.0 5.1 McDonald, I. et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society 427 (1): 343–57, doi:10.1111/j.1365-2966.2012.21873.x, Bibcode2012MNRAS.427..343M 
  6. Kukarkin, B. V. et al. (1981), "Nachrichtenblatt der Vereinigung der Sternfreunde e.V. (Catalogue of suspected variable stars)", Nachrichtenblatt der Vereinigung der Sternfreunde E.V. (1981) (Moscow: Academy of Sciences USSR Shternberg), Bibcode1981NVS...C......0K 
  7. Mason, B. D. et al. (2014), "The Washington Visual Double Star Catalog", The Astronomical Journal 122: 3466–3471, doi:10.1086/323920, Bibcode2001AJ....122.3466M, http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=B/wds, retrieved 2015-07-22 

External links