RCW 34

Emission nebula
Emission nebula
	RCW 34 (Gum 19) nebula in the constellation of Vela
Observation data: J2000 epoch
Right ascension	08h 56m 28.1s
Declination	−43° 05′ 58″
Distance	8200 ± 700 ly (2500 ± 200 pc)
Apparent magnitude (V)	11.21
Constellation	Vela (constellation)
Designations	Gum 19, IRAS 08546-4254, VdBH 25
	See also: Lists of nebulae

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 after Australian astronomer Colin Stanley Gum.^[3]

The nebula RCW 34 is relatively dark. However, when observed using infrared wavelengths, two different areas are visible - one half of the nebula is bright, and the other is dark. The bright side is the hydrogen illuminated by a nearby blue supergiant star, and dark is the place where new stars surround the central star on the other side.

The source of energy that stimulates the nebula RCW 34 to shine is a huge, extremely hot star V391 Velorum with a surface temperature of up to 30,000 °C. Because it is a variable star, it evokes violent phenomena, including discards of matter shells, affecting the composition and light emission of the RCW 34 nebula. Stars of the type V391 Velorum do not burn long enough to explode as supernovae. It can be expected that the explosion of the central star will completely change the RCW 34 nebula.

References

^ ^a ^b ^c ^d "RCW 34". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-06-13.
^ Bik, A.; Puga, E.; Waters, L.B.F.M.; Horrobin, M.; Henning, Th.; Vasyunina, T.; Beuther, H.; Linz, H.; Kaper, L.; Van Den Ancker, M.; Lenorzer, A.; Churchwell, E.; Kurtz, S.; Kouwenhoven, M. B. N.; Stolte, A.; De Koter, A.; Thi, W. F.; Comerón, F.; Waelkens, Ch. (2010). "Sequential Star Formation in RCW 34: A Spectroscopic Census of the Stellar Content of High-Mass Star-Forming Regions". The Astrophysical Journal. 713 (2): 883–899. arXiv:1002.2571. Bibcode:2010ApJ...713..883B. doi:10.1088/0004-637X/713/2/883. S2CID 12429068.
^ "APOD: 2006 May 19 - The Gum Nebula". apod.nasa.gov. Retrieved 2018-11-17.

[SIMBAD-1] "RCW 34". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-06-13.

[Bik-2] Bik, A.; Puga, E.; Waters, L.B.F.M.; Horrobin, M.; Henning, Th.; Vasyunina, T.; Beuther, H.; Linz, H.; Kaper, L.; Van Den Ancker, M.; Lenorzer, A.; Churchwell, E.; Kurtz, S.; Kouwenhoven, M. B. N.; Stolte, A.; De Koter, A.; Thi, W. F.; Comerón, F.; Waelkens, Ch. (2010). "Sequential Star Formation in RCW 34: A Spectroscopic Census of the Stellar Content of High-Mass Star-Forming Regions". The Astrophysical Journal. 713 (2): 883–899. arXiv:1002.2571. Bibcode:2010ApJ...713..883B. doi:10.1088/0004-637X/713/2/883. S2CID 12429068.

[3] "APOD: 2006 May 19 - The Gum Nebula". apod.nasa.gov. Retrieved 2018-11-17.

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v t e Gum Catalog
Colin Stanley Gum
Gum 1 Gum 2 Gum 3 Gum 4 Gum 5 Gum 6 Gum 7 Gum 8 Gum 9 Gum 10 Gum 12 Gum 13 Gum 14 Gum 15 Gum 16 Gum 17 Gum 18 Gum 19 Gum 20 Gum 21 Gum 22 Gum 23 Gum 24 Gum 25 Gum 26 Gum 27 Gum 28 Gum 29 Gum 30 Gum 31 Gum 32 Gum 33 Gum 34 Gum 35 Gum 36 Gum 37 Gum 38 Gum 39 Gum 40 Gum 41 Gum 42 Gum 43 Gum 44 Gum 45 Gum 46 Gum 47 Gum 48 Gum 49 Gum 50 Gum 51 Gum 52 Gum 53 Gum 54 Gum 55 Gum 56 Gum 57 Gum 58 Gum 59 Gum 60 Gum 61 Gum 62 Gum 63 Gum 64 Gum 65 Gum 66 Gum 67 Gum 68 Gum 69 Gum 70 Gum 71 Gum 72 Gum 73 Gum 74 Gum 75 Gum 76 Gum 77 Gum 78 Gum 79 Gum 80 Gum 81 Gum 82 Gum 83 Gum 84 Gum 85
See also: Gum Nebula