Mid-IR spectra of HD 142527 inner disc and common dust types

Mid-IR spectrum of the inner region of the protoplanetary disc around the young star HD 142527, as observed with the MIDI instrument at the VLT Interferometer (upper). Below it are shown laboratory spectra of two crystalline minerals as well as of an Interplanetary Dust Particle (IDP; captured in the Earth's upper atmosphere) with hydrated silicates and, at the bottom, a typical telescopic spectrum of dust grains in the interstellar space. The spectral "signatures" of crystalline pyroxene and olivine, i.e. peaks at wavelength 9.2 and 11.3 µm, respectively, are clearly visible in the spectrum of the inner stellar disc, demonstrating the presence of these species in that region of the disc.

Créditos:

ESO

Sobre a imagem

Id:eso0435a
Tipo:Mapa
Data de divulgação:24 de Novembro de 2004
Notícias relacionadas:eso0435
Tamanho:800 x 942 px

Sobre o objeto

Nome:HD 142527
Tipo:Milky Way : Star : Circumstellar Material : Disk : Protoplanetary
Distância:450 anos-luz
Categoria:Stars

Formatos de imagens

JPEG grande
128,6 KB

Cores e filtros

BandaTelescópio
Infravermelho
Near-IR
Very Large Telescope Interferometer
MIDI