Protostar HH 34 in Orion

This image is an enlargement of a three-colour composite of the young object Herbig-Haro 34 (HH-34), now in the protostar stage of evolution. It is based on CCD frames obtained with the FORS2 instrument in imaging mode, on November 2 and 6, 1999. This object has a remarkable, very complicated appearance that includes two opposite jets that ram into the surrounding interstellar matter. This structure is produced by a machine-gun-like blast of "bullets" of dense gas ejected from the star at high velocities (approaching 250 km/sec). This seems to indicate that the star experiences episodic "outbursts" when large chunks of material fall onto it from a surrounding disc. HH-34 is located at a distance of approx. 1,500 light-years, near the famous Orion Nebula, one of the most productive star birth regions. Note also the enigmatic "waterfall" to the upper left, a feature that is still unexplained.

Crediti:

ESO

Riguardo l'immagine

Identificazione:eso9948c
Tipo:Osservazione
Data di rilascio:17 Novembre 1999
Notizie relative:eso9948
Grandezza:802 x 895 px

Riguardo all'oggetto

Nome:HH 34
Tipo:Milky Way : Star : Evolutionary Stage : Protostar
Distanza:1500 Anni luce
Constellation:Orion
Categoria:Nebulae

Formati delle immagini

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Coordinate

Position (RA):5 35 30.98
Position (Dec):-6° 28' 37.86"
Field of view:2.66 x 2.97 arcminutes
Orientazione:Il Nord è a 0.9° a destra della verticale

Colori e filtri

BandaLunghezza d'ondaTelescopio
Ottico
B
429 nmVery Large Telescope
FORS2
Ottico
H-alpha
429 nmVery Large Telescope
FORS2
Ottico
Sii
673 nmVery Large Telescope
FORS2