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.



Sobre a imagem

Data de divulgação:24 de Agosto de 2004
Notícias relacionadas:eso0426
Tamanho:935 x 599 px

Sobre o objeto

Nome:BX 404/405
Tipo:Early Universe : Galaxy

Formatos de imagens

JPEG grande
104,6 KB

Cores e filtros

BandaComprimento de ondaTelescópio
2.0 μmVery Large Telescope