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.
Kilde:ESO
Om billedet
Id: | eso9948c |
Type: | Observation |
Udgivelsesdato: | 17. november 1999 |
Relaterede pressemeddelelser: | eso9948 |
Størrelse: | 802 x 895 px |
Om objektet
Navn: | HH 34 |
Type: | Milky Way : Star : Evolutionary Stage : Protostar |
Afstand: | 1500 lysår |
Constellation: | Orion |
Kategori: | Nebulae |
Baggrundsbilleder
Koordinater
Position (RA): | 5 35 30.98 |
Position (Dec): | -6° 28' 37.86" |
Field of view: | 2.66 x 2.97 arcminutes |
Orientering: | Nord er 0.9° droite fra lodret |
Farver & filtre
Bånd | Bølgelængde | Teleskop |
---|---|---|
Optisk B | 429 nm | Very Large Telescope FORS2 |
Optisk H-alpha | 429 nm | Very Large Telescope FORS2 |
Optisk Sii | 673 nm | Very Large Telescope FORS2 |