Omicron1_Cancri

Omicron<sup>1</sup> Cancri

Omicron1 Cancri

Star in the constellation Cancer

Omicron1 Cancri, Latinised from ο1 Cancri, is a solitary,[10] white-hued star in the zodiac constellation of Cancer. It is visible to the naked eye with an apparent visual magnitude of +5.20.[2] Based upon an annual parallax shift of 21.87 mas as seen from Earth,[1] this star is located around 149 light-years from the Sun. It most likely forms a co-moving pair with Omicron2 Cancri.[11]

For other stars with this Bayer designation, see ο Cancri.
Quick Facts Constellation, Right ascension ...

With a stellar classification of A5 III,[3] this appears to be an evolved, A-type giant star. At the age of about 600 million years,[6] it has double[6] the mass of the Sun and 1.86 times the Sun's radius.[7] Omicron1 Cancri is radiating 13.4[8] times the solar luminosity from its photosphere at an effective temperature of about 8,636 K.[6]

Omicron1 Cancri has an infrared excess, indicating it surrounded by a circumstellar debris disk.[7] The signature matches a two-component disk with the spatially separated belts having temperatures of 146 K and 81 K.[8]

References

  1. [1]
    van 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, S2CID 18759600.
  2. [2]
    Häggkvist, L.; Oja, T. (1966), "Photoelectric photometry of bright stars", Arkiv för Astronomi, 4: 137–163, Bibcode:1966ArA.....4..137H.
  3. [3]
    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.
  4. [4]
    de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics, 546: 14, arXiv:1208.3048, Bibcode:2012A&A...546A..61D, doi:10.1051/0004-6361/201219219, S2CID 59451347, A61.
  5. [5]
    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, S2CID 119257644.
  6. [6]
    David, Trevor J.; Hillenbrand, Lynne A. (2015), "The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets", The Astrophysical Journal, 804 (2): 146, arXiv:1501.03154, Bibcode:2015ApJ...804..146D, doi:10.1088/0004-637X/804/2/146, S2CID 33401607.
  7. [7]
    Rhee, Joseph H.; et al. (May 2007), "Characterization of Dusty Debris Disks: The IRAS and Hipparcos Catalogs", The Astrophysical Journal, 660 (2): 1556–1571, arXiv:astro-ph/0609555, Bibcode:2007ApJ...660.1556R, doi:10.1086/509912, S2CID 11879505.
  8. [8]
    Vican, Laura; et al. (December 2016), "Herschel Observations of Dusty Debris Disks", The Astrophysical Journal, 833 (2): 19, arXiv:1607.03754, Bibcode:2016ApJ...833..263V, doi:10.3847/1538-4357/833/2/263, S2CID 119271799, 263.
  9. [9]
    "omi01 Cnc". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-06-15.{{cite web}}: CS1 maint: postscript (link)
  10. [10]
    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, S2CID 14878976.
  11. [11]
    Shaya, Ed J.; Olling, Rob P. (January 2011), "Very Wide Binaries and Other Comoving Stellar Companions: A Bayesian Analysis of the Hipparcos Catalogue", The Astrophysical Journal Supplement, 192 (1): 17, arXiv:1007.0425, Bibcode:2011ApJS..192....2S, doi:10.1088/0067-0049/192/1/2, S2CID 119226823, 2.
Share this article:

This article uses material from the Wikipedia article Omicron1_Cancri, and is written by contributors. Text is available under a CC BY-SA 4.0 International License; additional terms may apply. Images, videos and audio are available under their respective licenses.