You can help expand this article with text translated from the corresponding article in Italian. (October 2015) Click [show] for important translation instructions.
View a machine-translated version of the Italian article.
Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia.
Consider adding a topic to this template: there are already 683 articles in the main category, and specifying|topic= will aid in categorization.
Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article.
You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing Italian Wikipedia article at [[:it:Nebulosa di Gum]]; see its history for attribution.
You may also add the template {{Translated|it|Nebulosa di Gum}} to the talk page.
For more guidance, see Wikipedia:Translation.
Gum Nebula
Supernova remnant
The Gum Nebula in H-alpha
Observation data: J2000.0 epoch
Right ascension
08h 00m
Declination
−43° 00′
Distance
1470 ly (450 pc)
Apparent magnitude (V)
+12 (infrared only)
Apparent diameter
30°
Constellation
Vela, Puppis
Physical characteristics
Absolute magnitude (V)
3.73 (infrared)
Designations
Gum 12
See also: Lists of nebulae
The Gum Nebula (Gum 12) is an emission nebula that extends across 36° in the southern constellations Vela and Puppis. It lies approximately 450 parsecs from the Earth.[1] Hard to distinguish, it was widely believed to be the greatly expanded (and still expanding) remains of a supernova that took place about a million years ago. More recent research suggests it may be an evolved H II region. It contains the 11,000-year-old Vela Supernova Remnant, along with the Vela Pulsar.
The Gum Nebula contains about 32 cometary globules.[2] These dense cloud cores are subject to such strong radiation from O-type stars γ2 Vel and ζ Pup and formerly the progenitor of the Vela Supernova Remnant that the cloud cores evaporate away from the hot stars into comet-like shapes. Like ordinary Bok globules, cometary globules are believed to be associated with star formation.[3] A notable object inside one of these cometary globules is the Herbig-Haro object HH 46/47.
It is named after its discoverer, the Australian astronomer Colin Stanley Gum (1924–1960). Gum had published his findings in 1955 in a work called A study of diffuse southern H-alpha nebulae (see Gum catalog). He also published the discovery of the Gum Nebula in 1952 in the journal The Observatory. The observations were made with the Commonwealth Observatory.[4]
The Gum nebula was photographed during Apollo 16 while the command module was in the double umbra of the Sun and Earth, using high-speed Kodak film.[5]
^Graham, J.A., 1986. Objects associated with low-mass star formation in the Gum nebula. The Astrophysical Journal, 302, pp.352-362.
^Zealey, W. J., Z. Ninkov, E. Rice, M. Hartley, & S. B. Tritton. 1983, ApL, 23, 119.
^Reipurth, B. 1983, A&A, 117, 183. Star formation in BOK globules and low-mass clouds. "I - The cometary globules in the GUM Nebula."
^Gum, C. S. (1952-08-01). "A large H II region at galactic longitude 226 deg". The Observatory. 72: 151–154. Bibcode:1952Obs....72..151G. ISSN 0029-7704.
^Apollo 16 Preliminary Science Report (NASA SP-315), 1972. Chapter 31, Astronomical Photography, Part A, Gum Nebula, Glactic Cluster, and Zodiacal Light Photography, by R. D. Mercer, L. Dunkelman, and Thomas K. Mattingly.
The GumNebula (Gum 12) is an emission nebula that extends across 36° in the southern constellations Vela and Puppis. It lies approximately 450 parsecs...
The Lagoon Nebula (catalogued as Messier 8 or M8, NGC 6523, Sharpless 25, RCW 146, and Gum 72) is a giant interstellar cloud in the constellation Sagittarius...
including the Vela supernova remnant, the binary system γ2 Velorum, and the Gumnebula". Astronomy and Astrophysics. 525: A154. arXiv:1011.1177. Bibcode:2011A&A...
Observatory—showed several objects resembling comets, located in the GumNebula, an emission nebula of the constellation. Due to their particular shape, these objects...
and Panagia established in 1980 that Vela X was actually a pulsar wind nebula, contained within the fainter supernova remnant and driven by energy released...
000,000 M☉. This cloud complex lies on the sky in the direction of the GumNebula (foreground) and the Carina–Sagittarius Spiral Arm (background). The most...
The Omega Nebula, also known as the Swan Nebula, Checkmark Nebula, Lobster Nebula, and the Horseshoe Nebula (catalogued as Messier 17 or M17 or NGC 6618)...
including the Vela supernova remnant, the binary system γ2 Velorum, and the Gumnebula". Astronomy and Astrophysics. 525: A154. arXiv:1011.1177. Bibcode:2011A&A...
Gamma Velorum is a quadruple star system in the constellation Vela. This name is the Bayer designation for the star, which is Latinised from γ Velorum...
expected physical properties. Its association with objects such as the Gumnebula and γ2 Velorum is also used as a method to establish its distance. The...
The Eagle Nebula (catalogued as Messier 16 or M16, and as NGC 6611, and also known as the Star Queen Nebula) is a young open cluster of stars in the constellation...
The Crab Nebula (catalogue designations M1, NGC 1952, Taurus A) is a supernova remnant and pulsar wind nebula in the constellation of Taurus. The common...
film this nebula is the brightest patch of a huge supernova remnant (GumNebula) whose delicate whisps cover the field. A relatively bright star is immersed...
RCW 42 (or Gum 26), is a giant H II region in the Milky Way. It contains DBS2003 38, a deeply embedded infrared cluster. It lies at the western edge of...
catalogued as Sharpless 2-298 and Gum 4. The nebula has an overall bubble shape, but with complex filamentary structures. The nebula contains several hundred solar...
NGC 6334, colloquially known as the Cat's Paw Nebula, or Gum 64, is an emission nebula and star-forming region located in the constellation Scorpius. NGC...
Williamina Fleming GumNebula (Gum 12) is an emission nebula stretching across Vela and Puppis, named after Colin Stanley Gum. Hind's Variable Nebula (NGC 1555)...
RCW 34 (Gum 19) - H II region and the emission nebula located in the constellation Vela. It is located approximately 22,000 light years from Earth. Named...
object Angular diameter or size Relative size Magellanic Stream over 100° GumNebula 36° Milky Way 30° (by 360°) Width of spread out hand with arm streched...
The Trifid Nebula (catalogued as Messier 20 or M20 and as NGC 6514) is an H II region in the north-west of Sagittarius in a star-forming region in the...
RCW 108, also called the Rim Nebula, is a large star formation in the Milky Way, about 4,000 light years from Earth. RCW 108 is part of the Constellation...
The Orion Nebula (also known as Messier 42, M42, or NGC 1976) is a diffuse nebula situated in the Milky Way, being south of Orion's Belt in the constellation...
NGC 5189 (Gum 47, IC 4274, nicknamed Spiral Planetary Nebula) is a planetary nebula in the constellation Musca. It was discovered by James Dunlop on 1...
Global Information
