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From Wikipedia, the free encyclopedia

HH 34
Emission nebula
Herbig–Haro object
Image of HH 34 by the Hubble Space Telescope
Observation data: J2000.0 epoch
Right ascension05h 35m 28.28s[1]
Declination−06° 28′ 22.2″[1]
Distance1500[2] ly
Apparent magnitude (V)16[1]
ConstellationOrion
DesignationsHH 34S, [B77] 119, [CM95] Ori A10.
See also: Lists of nebulae

HH 34 is a Herbig–Haro object located in the Orion A molecular cloud at a distance of about 460 parsecs (1500 light-years).[2] It is notable for its highly collimated jet and very symmetric bow shocks. A bipolar jet from the young star is ramming into surrounding medium at supersonic speeds, heating the material to the point of ionization and emission at visual wavelengths. The source star is a class I protostar with a total luminosity of 45 L. Two bow shocks separated by 0.44 parsecs make the primary HH 34 system. Several larger and fainter bow shocks were later discovered on either side, making the extent of the system around 3 parsecs. The jet blows up the dusty envelope of the star, giving rise to 0.3 parsec long molecular outflow.[3]

See also

References

  1. ^ a b c Skiff, B. A. (October 2014), "General Catalogue of Stellar Spectral Classifications", Vizier Online Data Catalog, Bibcode:2014yCat....1.2023S
  2. ^ a b Reipurth, Bo; et al. (January 2002), "Hubble Space Telescope Images of the HH 34 Jet and Bow Shock: Structure and Proper Motions", The Astronomical Journal, 123 (1): 362–381, Bibcode:2002AJ....123..362R, doi:10.1086/324738
  3. ^ Bally, J. (September 2016). "Protostellar Outflows". Annual Review of Astronomy and Astrophysics. 54: 491–528. Bibcode:2016ARA&A..54..491B. doi:10.1146/annurev-astro-081915-023341.

External links

This page was last edited on 11 December 2023, at 06:37
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