Nebulae near the hot binary star BAT99-49 in the LMC

The nebula around the hot double star BAT99-49 in the Large Magellanic Cloud (LMC), obtained in January 2002 with the FORS1 multi-mode instrument at the 8.2-m VLT MELIPAL telescope at the Paranal Observatory (Chile). It is based on three exposures through narrow-band optical (interference) filters that isolate the light from specific atoms and ions. In this rendering, the blue colour represents the light from singly ionized Helium (He II; wavelength 468.6 nm; exposure time 45 min), green corresponds to doubly ionized oxygen ([O III]; 495.7 + 500.7 nm; 5 min) and red to hydrogen atoms (H; H-alpha line at 656.2 nm; 5 min). Of these three ions, He II is the tracer of high excitation, i.e. the bluest areas of the nebula are the hottest. The sky field measures 400 x 400 square arcsec ; the original pixel size on the 2k x 2k CCD is 0.23 arcsec. North is up and east to the left.

Crédit:

ESO

À propos de l'image

Identification:eso0310c
Type:Observation
Date de publication:9 avril 2003
Communiqués de presse en rapport:eso0310
Taille:1914 x 1917 px

À propos de l'objet

Nom:BAT99-49
Type:Local Universe : Nebula
Distance:180000 années lumière
Constellation:Mensa
Catégorie:Nebulae

Formats des images

Grand JPEG
927,2 Kio
JPEG taille écran
579,5 Kio

Fonds d'écran

1024x768
571,2 Kio
1280x1024
844,0 Kio
1600x1200
1,0 Mio
1920x1200
1,1 Mio
2048x1536
1,4 Mio

Coordinates

Position (RA):5 29 33.72
Position (Dec):-70° 59' 26.94"
Field of view:6.64 x 6.64 arcminutes
Orientation:North is 0.1° right of vertical

Couleurs & filtres

DomaineLongueur d'ondeTélescope
Visible
Heii
468 nmVery Large Telescope
FORS1
Visible
Oiii
500 nmVery Large Telescope
FORS1
Visible
Oiii
495 nmVery Large Telescope
FORS1
Visible
H-alpha
656 nmVery Large Telescope
FORS1