NGC 1502
{{Short description|Open cluster in the constellation Camelopardalis}}
{{Infobox open cluster
| name =
| image = Camelopardalis constellation map.svg|300px
| caption = The location of NGC 1502 (circled)
| credit =
| epoch = J2000
| constellation = Camelopardalis
| dist_ly = {{cvt|1058.4|pc|ly|order=flip|lk=on}}
{{val|3643|313|290|u=ly|fmt=commas}} ({{val|1117|96|89|u=pc|fmt=commas}})
| dist_pc =
| size_v = {{val|9.7|u=arcminute}}
| radius_ly = {{cvt|1.7|pc|ly|order=flip|lk=off}}
| mass_msol =
| notes =
| names = NGC 1502, Cr 45
}}
NGC 1502 (also known as the Golden Harp Cluster{{cite book|last=Stoyan|first=Ronald|last2=Schurig|first2=Stephan|title=interstellarum Deep Sky Atlas|publisher=Cambridge University Press; Oculum-Verlag GmbH|publication-place=Erlangen|date=2014|isbn=978-1-107-50338-0|oclc=920437579|url=http://www.deep-sky-atlas.com/}}) is a young open cluster of approximately 60 stars in the constellation Camelopardalis, discovered by William Herschel on November 3, 1787. It has a visual magnitude of 6.0 and thus is dimly visible to the naked eye. This cluster is located at a distance of approximately {{val|3500|u=light years|fmt=commas}} from the Sun, at the outer edge of the Cam OB1 association of co-moving stars, and is likely part of the Orion Arm. The asterism known as Kemble's Cascade appears to "flow" into NGC 1502, but this is just a chance alignment of stars.
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. It is heavily reddened due to interstellar dust. 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. 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. Five members of the cluster are chemically peculiar.
See also
- Alpha Camelopardalis, a runaway star possibly ejected from this cluster.
References
{{Reflist|refs=
| title=NGC 1502 | access-date=2022-01-10 }}
| title=Herschel 400 Observing Guide
| first=Steve | last=O'Meara | date=2007
| page=35 | isbn=9780521858939
| publisher=Cambridge University Press
| url=https://books.google.com/books?id=Nyh9fAC_tpIC&pg=PA35 }}
| title=Photometric study of Galactic open cluster NGC 2129, NGC 1502 and King 12
| display-authors=1 | last1=Tripathi | first1=A.
| last2=Pandey | first2=U. S. | last3=Kumar | first3=Brijesh
| journal=Bulletin of the Astronomical Society of India
| volume=41 | issue=3 | page=209
| date=September 2013 | bibcode=2013BASI...41..209T }}
| title=A CCD Search for Variable Stars of Spectral Type B in the Northern Hemisphere Open Clusters. VII. NGC 1502
| last1=Michalska | first1=G. | last2=Pigulski | first2=A.
| last3=Stęlicki | first3=M. | last4=Narwid | first4=A.
| display-authors=1 | journal=Acta Astronomica
| volume=59 | issue=4 | pages=349–370 | date=December 2009
| arxiv=0910.3672 | bibcode=2009AcA....59..349M }}
| title=CCD photometric search for peculiar stars in open clusters. VI. NGC 1502, NGC 3105, Stock 16, NGC 6268, NGC 7235 and NGC 7510
| last1=Paunzen | first1=E. | last2=Netopil | first2=M.
| last3=Iliev | first3=I. Kh. | last4=Maitzen | first4=H. M.
| last5=Claret | first5=A. | last6=Pintado | first6=O. I.
| display-authors=1 | journal=Astronomy and Astrophysics
| volume=443 | issue=1 | pages=157–162
| date=November 2005 | doi=10.1051/0004-6361:20053287
| arxiv=astro-ph/0508151 | bibcode=2005A&A...443..157P | s2cid=17585037 }}
| title=Illustrated Guide to Astronomical Wonders, From Novice to Master Observer
| first1=Robert | last1=Thompson | first2=Barbara | last2=Thompson
| date=2007 | page=111 | isbn=9780596526856
| publisher=O'Reilly Media
| url=https://books.google.com/books?id=ymt9nj_uPhwC&pg=PA111 }}
| title=Interstellar polarization and extinction towards the young open cluster NGC 1502
| display-authors=1 | last1=Topasna | first1=G. A.
| last2=Kaltcheva | first2=N. T. | last3=Paunzen | first3=E.
| journal=Astronomy & Astrophysics
| volume=615 | id=A166 | pages=16 | date=August 2018
| doi=10.1051/0004-6361/201731903 | bibcode=2018A&A...615A.166T | doi-access=free }}
| title=Clusters and mirages: cataloguing stellar aggregates in the Milky Way
| last1=Cantat-Gaudin | first1=T. | last2=Anders | first2=F.
| journal=Astronomy & Astrophysics
| volume=633 | id=A99 | pages=22
| date=January 2020 | doi=10.1051/0004-6361/201936691
| arxiv=1911.07075 | bibcode=2020A&A...633A..99C | s2cid=208138247 }}
| last=Seligman | first=Courtney
| title=Celestial Atlas: NGC Objects: NGC 1500 - 1549
| url=http://cseligman.com/text/atlas/ngc15.htm#1502
| website=cseligman.com | access-date=2022-01-10 }}
}}
External links
- {{Commons category-inline}}
- {{WikiSky}}
{{Ngc20}}
{{Camelopardalis}}
{{Sky|04|07|48|+|62|20|00|1}}
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{{DEFAULTSORT:NGC 1502}}