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.
Credit:ESO
Over de afbeelding
Id: | eso0023c |
Type: | Kaart |
Publicatiedatum: | 21 juli 2000 |
Gerelateerde berichten: | eso0023 |
Grootte: | 1030 x 691 px |
Over het object
Naam: | TWA-5 B |
Type: | Milky Way : Star : Type : Brown Dwarf |
Categorie: | Illustrations Stars |
Kleuren & filters
Band | Golflengte | Telescoop |
---|---|---|
Infrarood H | 1.6 μm | Very Large Telescope ISAAC |