Colour rendering of Orion Nebula area

This is a composite of three 1-min exposures of the Orion Nebula through narrow band filters centred on the 2.166 micron Br-gamma atomic hydrogen line (here reproduced in blue colour), the 1.257 micron [FeII] line (green) and the 2.12 micron 1-0 S(1) molecular hydrogen line (red). The colour coding reflects the ionisation state of the gas. Br-gamma traces hydrogen gas that is ionised by the well known Trapezium and other hot, young, stars in the region ; the [FeII] emission is emitted by high velocity fragments ejected during the birth of new stars in the OMC1 molecular cloud. The hollow filaments seen in molecular hydrogen result from shock heating of the molecular gas in the wake of the outflowing matter. In this image, the scale is 0.29 arcsec/pixel ; the field is 5x5 arcmin with North at the top and East to the left ; the seeing was around 0.5 arcsec.

Crédit:

ESO/N. Devillard

À propos de l'image

Identification:eso9805a
Type:Observation
Date de publication:29 janvier 1998
Communiqués de presse en rapport:eso9805
Taille:450 x 450 px

À propos de l'objet

Nom:Orion Nebula
Type:Milky Way : Nebula : Type : Star Formation
Distance:1400 années lumière
Constellation:Orion
Catégorie:Nebulae

Image Formats

Grand JPEG
72,6 Kio
JPEG taille écran
154,9 Kio

Fonds d'écran

1024x768
159,3 Kio
1280x1024
218,1 Kio
1600x1200
271,6 Kio
1920x1200
288,5 Kio
2048x1536
365,1 Kio

Coordinates

Position (RA):5 35 14.19
Position (Dec):-5° 22' 9.15"
Field of view:4.92 x 4.92 arcminutes
Orientation:North is 0.1° left of vertical

Couleurs & filtres

DomaineLongueur d'ondeTélescope
Infrarouge
Br-gamma
2.166 μmNew Technology Telescope
SOFI
Infrarouge
Feiii
1.257 μmNew Technology Telescope
SOFI
Infrarouge
H2
New Technology Telescope
SOFI