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

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About the Image

Id:eso0023c
Type:Chart
Release date:21 July 2000
Related releases:eso0023
Size:1030 x 691 px

About the Object

Name:TWA-5 B
Type:• Milky Way : Star : Type : Brown Dwarf
• X - Stars
• X - Illustrations

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Colours & filters

BandWavelengthTelescope
Infrared
H
1.6 μm Very Large Telescope
ISAAC

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