| Emission nebula | |
|---|---|
| Herbig–Haro object | |
 Image of HH 34 by theHubble Space Telescope | |
| Observation data:J2000.0epoch | |
| Right ascension | 05h 35m 28.28s[1] |
| Declination | −06° 28′ 22.2″[1] |
| Distance | 1500[2] ly |
| Apparent magnitude (V) | 16[1] |
| Constellation | Orion |
| Designations | HH 34S, [B77] 119, [CM95] Ori A10. |
| See also:Lists of nebulae | |
HH 34 is aHerbig–Haro object located in theOrion A molecular cloud at a distance of about 460parsecs (1500light-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 ofionization andemission atvisual wavelengths. The source star is aclass I protostar with a total luminosity of 45L☉. 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]
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