NGC 1003

NGC 1003 is a spiral galaxy at the western edge of the Perseus constellation.[8] It is located at a distance of about 36 million light years from the Milky Way and is receding with a heliocentric radial velocity of 624 km/s.[4] This galaxy was discovered by the Anglo-German astronomer William Herschel on October 6, 1784, who described it as "pretty faint, large, extended 90°±, much brighter middle, mottled but not resolved".[9] It is a member of the NGC 1023 group of galaxies.[5]

NGC 1003
NGC 1003 from the Hubble Space Telescope
Observation data (J2000[1] epoch)
ConstellationPerseus
Right ascension02h 39m 16.893s[2]
Declination+40° 52′ 20.25″[2]
Redshift0.002090[3]
Heliocentric radial velocity624 km/s[4]
Distance35.9 kly (11.02 kpc)[4]
Group or clusterNGC 1023 group[5]
Apparent magnitude (B)12.1[3]
Characteristics
TypeSAcd[6]
Mass299+28
−26×1010[7] M☉
Mass/Light ratio0.70+0.16
−0.15[7] M☉/L☉
Notable featuresWarped disk[6]
Other designations
NGC 1003, UGC 2137, MCG +07-06-051, PGC 10052[3]

The morphological class of NGC 1003 is SAcd, which means it is an unbarred spiral galaxy (SA) with somewhat loosely-wound spiral arms (cd). It is inclined by an angle of 70° to the line of sight from the Earth, with the major axis aligned along a position angle of 276°. The visual disk of the galaxy shows a substantial warping in the eastern side, turning it almost face on. The estimated star formation rate is 0.40 M☉·yr−1.[6] It has a virial mass of 3×1012 M☉ and a mass-to-light ratio of 0.7.[7]

A type Ia supernova[10] was discovered in the galaxy by F. Zwicky in 1937,[11] and subsequently designated SN 1937D.

References
  1. "NGC 1003, Spiral Galaxy". Retrieved 1 April 2016.
  2. Skrutskie, Michael F.; et al. (February 1, 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal. 131 (2): 1163–1183. Bibcode:2006AJ....131.1163S. doi:10.1086/498708. ISSN 0004-6256. S2CID 18913331.
  3. "NGC 1003". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-05-16.
  4. Tully, R. Brent; et al. (August 2016). "Cosmicflows-3". The Astronomical Journal. 152 (2): 21. arXiv:1605.01765. Bibcode:2016AJ....152...50T. doi:10.3847/0004-6256/152/2/50. S2CID 250737862. 50.
  5. Trentham, Neil; Tully, R. Brent (2009). "Dwarf galaxies in the NGC 1023 Group". Monthly Notices of the Royal Astronomical Society. 398 (2): 722. arXiv:0906.2540. Bibcode:2009MNRAS.398..722T. doi:10.1111/j.1365-2966.2009.15189.x. S2CID 18442520.
  6. Marasco, A.; et al. (November 2019). "HALOGAS: the properties of extraplanar HI in disc galaxies". Astronomy & Astrophysics. 631: 27. arXiv:1909.04048. Bibcode:2019A&A...631A..50M. doi:10.1051/0004-6361/201936338. S2CID 202542295. A50.
  7. Haghi, Hosein; et al. (July 2018). "Rotation curves of galaxies and the stellar mass-to-light ratio". Monthly Notices of the Royal Astronomical Society. 477 (3): 4187–4199. arXiv:1803.01860. Bibcode:2018MNRAS.477.4187H. doi:10.1093/mnras/sty523.
  8. Sinnott, Roger W.; Perryman, Michael A. C. (1997). Millennium Star Atlas. Vol. 1. Sky Publishing Corporation and the European Space Agency. p. 100. ISBN 0-933346-84-0.
  9. Seligman, Courtney. "NGC 1003 (= PGC 10052)". Celestial Atlas. Retrieved 2021-12-19.
  10. Navasardyan, H.; et al. (December 2001). "Supernovae in isolated galaxies, in pairs and in groups of galaxies". Monthly Notices of the Royal Astronomical Society. 328 (4): 1181–1192. arXiv:astro-ph/0109434. Bibcode:2001MNRAS.328.1181N. doi:10.1046/j.1365-8711.2001.04942.x. S2CID 10657942.
  11. Baade, W.; Zwicky, F. (November 1938). "Photographic Light-Curves of the Two Supernovae in IC 4182 and NGC 1003". Astrophysical Journal. 88: 411. Bibcode:1938ApJ....88..411B. doi:10.1086/143996.
  12. "NGC 1003". noirlab.edu. Retrieved 5 January 2021.
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