Astronomy:NGC 1624

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NGC 1624
Image of NGC 1624 with the Isaac Newton Telescope
Credit: IGAPS
Observation data (J2000 epoch)
ConstellationPerseus
Right ascension 04h 40m 36.0s[1]
Declination+50° 27′ 42″[1]
Distance20000 ± 2000 ly (6000 ± 600 pc[2])
Apparent magnitude (V)11.8[1]
Physical characteristics
Estimated age<4 Myr[2]
Other designationsCr 53, C 0436+503, OCl 403,[1] Tribble Nebula,[3] Little Cocoon Nebula[citation needed]
See also: Open cluster, List of open clusters

NGC 1624, also known as Sh 2-212[4] in the Sharpless catalog, is a very young open cluster in the constellation Perseus inside an emission nebula. It was discovered by German-British astronomer William Herschel in December 1790.[5] Together with the nearby nebula Sh 2-211, it forms part of the region nicknamed the Tribble Nebulae.[3]

NGC 1624 is located approximately 20,000 ly (6,000 pc) from Earth, and latest estimates give it an age of less than 4 million years.[2] Its apparent magnitude is 11.8,[1] and apparent diameter is about 3.0 arc minutes.[5] Its celestial location is right ascension (α)  04h 40m 36.0s and declination (δ) +50° 27′ 42″,[1] which is toward the Galactic anticenter.[6] It is potentially an area of massive star formation.[7]

According to Robert Trumpler's classification of open clusters, this cluster contains fewer than 50 stars (letter p) with a high concentration (I) and whose magnitudes are distributed over an average interval (number 2). The letter n at the end (I2pn) means that the cluster is inside a nebula.

  • Wide-field view of Sh 2-211 and Sh 2-212 (the Tribble Nebulae)
    Wide-field view of Sh 2-211 and Sh 2-212 (the Tribble Nebulae)
  • Mid-infrared view of NGC 1624 imaged by unWISE
    Mid-infrared view of NGC 1624 imaged by unWISE

See also

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 "NGC 1624". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+1624. 
  2. ↑ 2.0 2.1 2.2 "Sejong Open Cluster Survey (SOS) - IV. The Young Open Clusters NGC 1624 and NGC 1931". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Sejong+Open+Cluster+Survey+%28SOS%29+-+IV.+The+Young+Open+Clusters+NGC+1624+and+NGC+1931. 
  3. ↑ 3.0 3.1 "The Tribble Nebulae NGC1624/Sh2-212 and Sh2-211 - Forthimage". 16 November 2021. https://www.forthimage.co.uk/news/the-tribble-nebulae-ngc1624-sh2-212-and-sh2-211/. 
  4. ↑ "Sh2-212". http://galaxymap.org/cat/view/sharpless/212. 
  5. ↑ 5.0 5.1 Seligman, Courtney. "New General Catalogue objects: NGC 1600 - 1649". http://cseligman.com/text/atlas/ngc16.htm#1624. 
  6. ↑ Camargo, D. (July 2013). "Towards a census of the Galactic anticentre star clusters - III. Tracing the spiral structure in the outer disc". Monthly Notices of the Royal Astronomical Society 432 (4): 3349–3360. doi:10.1093/mnras/stt703. Bibcode: 2013MNRAS.432.3349C. 
  7. ↑ Deharveng, L.; Lefloch, B.; Kurtz, S.; Nadeau, D.; Pomarès, M.; Caplan, J.; Zavagno, A. (2008). "Triggered massive-star formation on the borders of Galactic H II regions". Astronomy & Astrophysics 482 (2): 585–596. doi:10.1051/0004-6361:20079233. 

Coordinates: Sky map 04h 40m 36s, +50° 27′ 42″




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