SINFONI observations of the young starforming galaxies BX 404/405

The distant galaxy pair BX 404/405, as recorded in the K-band (wavelength 2 µm, centered on the redshifted H-alpha line), without AO-correction because of the lack of a nearby, sufficiently bright "guide" star. The width of each slitlet was 0.25 arcsec and the seeing about 0.6 arcsec. The integration time on the galaxy was 2 hours "on-source". The image shown has been reconstructed by combining all of the spectral elements around the H-alpha spectral line. The spectrum of BX 405 (upper right) clearly reveals signs of a velocity shear while that of BX 404 does not. This may be a sign of rotation, a possible signature of a young disc in this galaxy.



À propos de l'image

Date de publication:24 août 2004
Communiqués de presse en rapport:eso0426
Taille:935 x 599 px

À propos de l'objet

Nom:BX 404/405
Type:Early Universe : Galaxy

Image Formats

Grand JPEG
104,6 Kio
JPEG taille écran
104,2 Kio

Couleurs & filtres

DomaineLongueur d'ondeTélescope
2.0 μmVery Large Telescope