NGC 2467

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title: "NGC 2467" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["ngc-objects", "star-forming-regions", "sharpless-objects", "puppis"] description: "Open cluster in the constellation Puppis" topic_path: "general/ngc-objects" source: "https://en.wikipedia.org/wiki/NGC_2467" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Open cluster in the constellation Puppis ::

::data[format=table title="Infobox nebula"]

Field	Value
name	NGC 2467
image	NGC 2467 and Surroundings.jpg
caption	NGC 2467 and surrounding area, from European Southern Observatory
type	emission
type2
epoch	J2000
ra
dec
dist_ly
dist_pc
appdia
constellation	Puppis
names	Cr 164, Gum 9, Sh 2-311, ESO 493-25
::

|name = NGC 2467 |image = NGC 2467 and Surroundings.jpg |caption = NGC 2467 and surrounding area, from European Southern Observatory |credit = |type = emission |type2 = |epoch = J2000 |subtype = |class = |ra = |dec = |dist_ly = |dist_pc = |appmag_v = |appdia = |size_v = |constellation = Puppis |radius_ly = |radius_pc = |dimensions = |absmag_v = |notes = |names = Cr 164, Gum 9, Sh 2-311, ESO 493-25 NGC 2467, nicknamed the "Skull and Crossbones Nebula", is a star-forming region whose appearance has occasionally also been likened to that of a colorful mandrill. It includes areas where large clouds of hydrogen gas incubate new stars. This region was one of the areas featured in the book Hubble's Universe: Greatest Discoveries and Latest Images by Terence Dickinson.

Discussion

NGC 2467 had long been considered to be the nucleus of the Puppis I association. However, NGC 2467 does not represent a distinct open cluster; rather, it represents a superimposition of several stellar groups along the same approximate line of sight that have distinctly different distances and distinctly different radial velocities. One of these is a young and very distant group beyond Puppis OB2, while another, nearer group with later-type stars lies at a similar distance as Puppis OB1.

The region is dominated by a massive young star, HD 64315 (annotated in Commons, below and left of center), of spectral type O6. Two stellar clusters also exist in the area, Haffner 19 (H19, annotated) and Haffner 18 (H18, annotated). H19 is a compact cluster containing a Strömgren sphere which is ionized by a hot B0 V-type star. H18 contains a very young star, FM3060a (annotated), that has just come into existence and still surrounded by its birth cocoon of gas. The age of H19 is estimated to be 2 Myr, while the age H18 is somewhat controversial, some considering it to be as young as only 1 Myr.

The H II region of NGC 2467 has been the target of various investigations to elucidate the process of star formation. Unresolved questions include understanding the degree to which the stars already formed in such regions, especially the massive O or B stars, can affect the future formation of stars in the region: Do these pre-existing stars trigger the formation of others? The YSOs are mostly along the edge of the HII region. The concentrated distribution of these objects spatially correlated with the ionization fronts provides evidence for triggered star formation. The newly forming ptotostars are concentrated in areas where the shock front driven in advance of the ionization front compresses the molecular gas.

It has been estimated that H19, H18, and the S311 nebula (in which lies HD 64315) are about 6.4 kpc, 5.9 kpc, and 6.3 kpc away, placing them in the Perseus Arm of the Milky Way. Regardless of these discrepancies, H19 and H18 may be considered to be a binary cluster.

Gallery

File:Eso1834aThe Pirate of the Southern Skies NGC 2467.jpg|Active star-forming region of NGC 2467 File:A cosmic concoction in NGC 2467.jpg|Hubble view of NGC 2467

Footnotes

References

References

1. (2016). "A multiwavelength investigation of the H ii region S311: Young stellar population and star formation". Monthly Notices of the Royal Astronomical Society.
2. "NGC 2467".
3. (March 2006). "What's Up 2006 - 365 Days of Skywatching". Lulu.
4. "A cosmic concoction in NGC 2467". Space Telescope.
5. [http://www.universetoday.com/98789/stunning-gallery-of-previously-unpublished-images-from-hubbles-universe/#more-98789 Stunning Gallery of Previously Unpublished Images - Universe Today]
6. Lodén, L. O.. (1966). "A study of NGC 2467 and the association Pup I". Arkiv för Astronomi.
7. Pişmiş, P.. (1976). "Internal motions in H II regions. III. The nebular complex NGC 2467". Revista Mexicana de Astronomía y Astrofísica.
8. Feinstein, A.. (1989). "New UBVRI photoelectric photometry in the field of the open cluster NGC 2467". [[Astronomy and Astrophysics Supplement Series]].
9. Gamen, R. C.. (2006). "Deep Photometric Studies in the Third Quadrant: NGC 2467". Revista Mexicana de Astronomía y Astrofísica, Serie de Conferencias.
10. Fitzgerald, M. P.. (1974). "Puppis clusters Haffner 19 and 18ab and the 15 kiloparsec arm". Astronomical Journal.
11. "The Pirate of the Southern Skies".

::callout[type=info title="Wikipedia Source"] This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page. ::