Infrared spectrum of brown dwarf TWA-5B
This infrared spectrum was obtained on 16 April 2000 with the ISAAC multi-mode instrument at the 8.2-m VLT/ANTU telescope in the 1.4 - 1.8 µm wavelength range (the H-band), with spectral resolution 500. It corresponds to a total exposure time of 20 min and was made through a 0.6 arcsec wide slit. Lines of Magnesium (Mg), Carbon Monoxide (CO), and the Hydroxyl radical (OH) are identified. The general shape of the spectrum is typical of that of a late M-type dwarf star. For comparison, the infrared spectrum of an M9-type star is shown. The spectra are indeed quite similar.
Crédit:ESO
À propos de l'image
Identification: | eso0023c |
Type: | Graphique |
Date de publication: | 21 juillet 2000 |
Communiqués de presse en rapport: | eso0023 |
Taille: | 1030 x 691 px |
À propos de l'objet
Nom: | TWA-5 B |
Type: | Milky Way : Star : Type : Brown Dwarf |
Catégorie: | Illustrations Stars |
Couleurs & filtres
Domaine | Longueur d'onde | Télescope |
---|---|---|
Infrarouge H | 1.6 μm | Very Large Telescope ISAAC |