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.

Crédito:

ESO

Sobre la imagen

Identificador:eso0310c
Tipo:Observación
Fecha de publicación:9 de Abril de 2003
Noticias relacionadas:eso0310
Tamaño:1914 x 1917 px

Sobre el objeto

Nombre:BAT99-49
Tipo:Local Universe : Nebula
Distancia:180000 años luz
Constellation:Mensa
Categoría:Nebulae

Formatos de imagen

JPEG grande
927,2 KB

Fondo de pantalla

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

Coordenadas

Position (RA):5 29 33.72
Position (Dec):-70° 59' 26.94"
Field of view:6.64 x 6.64 arcminutes
Orientación:El norte está a 0.1° a la derecha de la vertical

Colores y filtros

BandaLongitud de ondaTelescopio
Óptico
Heii
468 nmVery Large Telescope
FORS1
Óptico
Oiii
500 nmVery Large Telescope
FORS1
Óptico
Oiii
495 nmVery Large Telescope
FORS1
Óptico
H-alpha
656 nmVery Large Telescope
FORS1