NGC_1502

NGC 1502

NGC 1502

Open cluster in the constellation Camelopardalis

NGC 1502 is a young[6] open cluster of approximately 60[3] stars in the constellation Camelopardalis, discovered by William Herschel on November 3, 1787.[7] It has a visual magnitude of 6.0 and thus is dimly visible to the naked eye.[3] This cluster is located at a distance of approximately 3,500 light years[1][2] from the Sun, at the outer edge of the Cam OB1 association of co-moving stars, and is likely part of the Orion Arm.[2] The asterism known as Kemble's Cascade appears to "flow" into NGC 1502, but this is just a chance alignment of stars.[8]

Quick Facts Observation data (J2000 epoch), Right ascension ...
NGC 1502 in infrared

The Trumpler class of NGC 1502 is II3p, indicating poorly populated cluster of stars (p) with a wide brightness range (3). The main sequence turnoff point is not well-defined, so the age estimates range from five to fifteen million years.[6] It is heavily reddened due to interstellar dust.[4] One of the brightest candidate members of the cluster is the eclipsing binary SZ Cam, which is a component of a visual double star ADS 2984.[2] There are eleven variable stars and four candidate variables among the cluster members, including a β Cep, two periodic B-type variables, 2–3 eclipsing variables, and an RR Lyrae star.[6] Five members of the cluster are chemically peculiar.[9]

See also

References

  1. [1]
    Cantat-Gaudin, T.; Anders, F. (January 2020). "Clusters and mirages: cataloguing stellar aggregates in the Milky Way". Astronomy & Astrophysics. 633: 22. arXiv:1911.07075. Bibcode:2020A&A...633A..99C. doi:10.1051/0004-6361/201936691. S2CID 208138247. A99.
  2. [2]
    Topasna, G. A.; et al. (August 2018). "Interstellar polarization and extinction towards the young open cluster NGC 1502". Astronomy & Astrophysics. 615: 16. Bibcode:2018A&A...615A.166T. doi:10.1051/0004-6361/201731903. A166.
  3. [3]
    O'Meara, Steve (2007). Herschel 400 Observing Guide. Cambridge University Press. p. 35. ISBN 9780521858939.
  4. [4]
    Tripathi, A.; et al. (September 2013). "Photometric study of Galactic open cluster NGC 2129, NGC 1502 and King 12". Bulletin of the Astronomical Society of India. 41 (3): 209. Bibcode:2013BASI...41..209T.
  5. [5]
    "NGC 1502". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2022-01-10.
  6. [6]
    Michalska, G.; et al. (December 2009). "A CCD Search for Variable Stars of Spectral Type B in the Northern Hemisphere Open Clusters. VII. NGC 1502". Acta Astronomica. 59 (4): 349–370. arXiv:0910.3672. Bibcode:2009AcA....59..349M.
  7. [7]
    Seligman, Courtney. "Celestial Atlas: NGC Objects: NGC 1500 - 1549". cseligman.com. Retrieved 2022-01-10.
  8. [8]
    Thompson, Robert; Thompson, Barbara (2007). Illustrated Guide to Astronomical Wonders, From Novice to Master Observer. O'Reilly Media. p. 111. ISBN 9780596526856.
  9. [9]
    Paunzen, E.; et al. (November 2005). "CCD photometric search for peculiar stars in open clusters. VI. NGC 1502, NGC 3105, Stock 16, NGC 6268, NGC 7235 and NGC 7510". Astronomy and Astrophysics. 443 (1): 157–162. arXiv:astro-ph/0508151. Bibcode:2005A&A...443..157P. doi:10.1051/0004-6361:20053287. S2CID 17585037.
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