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.

Kilde:

ESO

Om bildet

ID:eso0426o
Type:Observasjon
Publiseringsdato:24. august 2004
Relaterte pressemeldinger:eso0426
Størrelse:935 x 599 px

Om objektet

Navn:BX 404/405
Type:Early Universe : Galaxy
Kategori:Galaxies

Bildeformater

Stor JPEG
104,6 KB
Medium JPEG
104,2 KB

Farger og filtre

BåndBølgelengdeTeleskop
Infrarødt
K
2.0 μmVery Large Telescope
SINFONI